ASP.Net/Asp Control/TextBox — различия между версиями

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Текущая версия на 11:52, 26 мая 2010

asp:TextBox: AccessKey (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
End Sub
Sub SubmitBtn_Click(Sender As Object, E As EventArgs)
  lblDataEntered.Text = "You entered:<BR>" _
      & txtName.Text & "<BR>" _
      & txtEmail.Text & "<BR>" _
      & txtPhone.Text
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Creating a Basic TextBox Control</TITLE>
</HEAD>
<form runat="server">
<asp:Label 
    id="lblDataEntered" 
    runat="server"
/>
<BR><BR>
Enter your Name:<BR>
<asp:TextBox 
    id="txtName" 
    Columns="25"
    MaxLength="30"
    Text="Your Name Here"
    runat=server 
/>
<BR><BR>
Enter your Email Address:<BR>
<asp:TextBox 
    id="txtEmail" 
    Columns="35"
    MaxLength="50"
    Text="@mycompany.ru"
    BackColor="LightYellow"
    Font-Name="Comic Sans MS"
    Font-Size="9pt"
    Font-Bold="True"
    ToolTip="Remember to include your full email address!"
    runat=server 
/>
<BR><BR>
Enter your Phone Number:<BR>
<asp:TextBox 
    id="txtPhone" 
    Columns="15"
    MaxLength="15"
    Text="() -"
    AccessKey="P"
    BackColor="DarkRed"
    BorderWidth="3"
    BorderColor="DarkBlue"
    BorderStyle="Dashed"
    ForeColor="Yellow"
    ToolTip="No Extensions!"  
    runat=server 
/>
<BR><BR>
<asp:button 
    id="butOK"
    text="OK"
    Type="Submit"
    OnClick="SubmitBtn_Click" 
    runat="server"
/>
</Form>
</BODY>
</HTML>



asp:textbox: back ground color (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Creating a Multi-line TextBox Control</TITLE>
</HEAD>
<form runat="server">
Enter your comment:<BR>
<asp:textbox 
    id="txtComment1" 
    textmode="MultiLine"
    columns="25"
    rows="5"
    wrap="True"
    backcolor="LightYellow"
    font-name="Comic Sans MS"
    font-size="9pt"
    runat=server 
/>
<BR><BR>
Enter your comment:<BR>
<asp:textbox 
    id="txtComment2" 
    textmode="MultiLine"
    columns="25"
    rows="10"
    wrap="False"
    backcolor="LightYellow"
    font-name="Comic Sans MS"
    font-size="9pt"
    runat=server 
/>
<BR><BR>
</Form>
</BODY>
</HTML>



asp:TextBox: BorderStyle (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
End Sub
Sub SubmitBtn_Click(Sender As Object, E As EventArgs)
  lblDataEntered.Text = "You entered:<BR>" _
      & txtName.Text & "<BR>" _
      & txtEmail.Text & "<BR>" _
      & txtPhone.Text
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Creating a Basic TextBox Control</TITLE>
</HEAD>
<form runat="server">
<asp:Label 
    id="lblDataEntered" 
    runat="server"
/>
<BR><BR>
Enter your Name:<BR>
<asp:TextBox 
    id="txtName" 
    Columns="25"
    MaxLength="30"
    Text="Your Name Here"
    runat=server 
/>
<BR><BR>
Enter your Email Address:<BR>
<asp:TextBox 
    id="txtEmail" 
    Columns="35"
    MaxLength="50"
    Text="@mycompany.ru"
    BackColor="LightYellow"
    Font-Name="Comic Sans MS"
    Font-Size="9pt"
    Font-Bold="True"
    ToolTip="Remember to include your full email address!"
    runat=server 
/>
<BR><BR>
Enter your Phone Number:<BR>
<asp:TextBox 
    id="txtPhone" 
    Columns="15"
    MaxLength="15"
    Text="() -"
    AccessKey="P"
    BackColor="DarkRed"
    BorderWidth="3"
    BorderColor="DarkBlue"
    BorderStyle="Dashed"
    ForeColor="Yellow"
    ToolTip="No Extensions!"  
    runat=server 
/>
<BR><BR>
<asp:button 
    id="butOK"
    text="OK"
    Type="Submit"
    OnClick="SubmitBtn_Click" 
    runat="server"
/>
</Form>
</BODY>
</HTML>



asp:TextBox: format (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
End Sub
Sub SubmitBtn_Click(Sender As Object, E As EventArgs)
  lblDataEntered.Text = "You entered:<BR>" _
      & txtName.Text & "<BR>" _
      & txtEmail.Text & "<BR>" _
      & txtPhone.Text
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Creating a Basic TextBox Control</TITLE>
</HEAD>
<form runat="server">
<asp:Label 
    id="lblDataEntered" 
    runat="server"
/>
<BR><BR>
Enter your Name:<BR>
<asp:TextBox 
    id="txtName" 
    Columns="25"
    MaxLength="30"
    Text="Your Name Here"
    runat=server 
/>
<BR><BR>
Enter your Email Address:<BR>
<asp:TextBox 
    id="txtEmail" 
    Columns="35"
    MaxLength="50"
    Text="@mycompany.ru"
    BackColor="LightYellow"
    Font-Name="Comic Sans MS"
    Font-Size="9pt"
    Font-Bold="True"
    ToolTip="Remember to include your full email address!"
    runat=server 
/>
<BR><BR>
Enter your Phone Number:<BR>
<asp:TextBox 
    id="txtPhone" 
    Columns="15"
    MaxLength="15"
    Text="() -"
    AccessKey="P"
    BackColor="DarkRed"
    BorderWidth="3"
    BorderColor="DarkBlue"
    BorderStyle="Dashed"
    ForeColor="Yellow"
    ToolTip="No Extensions!"  
    runat=server 
/>
<BR><BR>
<asp:button 
    id="butOK"
    text="OK"
    Type="Submit"
    OnClick="SubmitBtn_Click" 
    runat="server"
/>
</Form>
</BODY>
</HTML>



asp: textbox on text changed event (C#)

<%@ Page Language="C#" %>
<script runat="server">
    protected void txtSearch_TextChanged(object sender, EventArgs e)
    {
        lblSearchResults.Text = "Search for: " + txtSearch.Text;
    }
</script>
<html>
<head>
    <title>TextBox AutoPostBack</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    <asp:Label
        id="lblSearch"
        Text="Search:"
        Runat="server" />
    <asp:TextBox
        id="txtSearch"
        AutoPostBack="true"
        OnTextChanged="txtSearch_TextChanged"
        Runat="server" />
    <hr />
    
    <asp:Label
        id="lblSearchResults"
        Runat="server" />
    
    </div>
    </form>
</body>
</html>



asp:textbox: wrap (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Creating a Multi-line TextBox Control</TITLE>
</HEAD>
<form runat="server">
Enter your comment:<BR>
<asp:textbox 
    id="txtComment1" 
    textmode="MultiLine"
    columns="25"
    rows="5"
    wrap="True"
    backcolor="LightYellow"
    font-name="Comic Sans MS"
    font-size="9pt"
    runat=server 
/>
<BR><BR>
Enter your comment:<BR>
<asp:textbox 
    id="txtComment2" 
    textmode="MultiLine"
    columns="25"
    rows="10"
    wrap="False"
    backcolor="LightYellow"
    font-name="Comic Sans MS"
    font-size="9pt"
    runat=server 
/>
<BR><BR>
</Form>
</BODY>
</HTML>



BackColor, ForeColor, BorderColor, AccessKey, Columns for asp:textbox (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
End Sub
Sub SubmitBtn_Click(Sender As Object, E As EventArgs)
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>TextBox Controls Sample Page</TITLE>
</HEAD>
<BODY >
<form runat="server">
<Font Face="Tahoma" Size="+1">
<asp:TextBox 
    id="txtStandard" 
    Columns="25"
    MaxLength="30"
    Text="Single Line"
    runat=server 
/>
<BR><BR>
<asp:TextBox 
    id="txtPassword" 
    Columns="10"
    MaxLength="30"
    runat=server 
    TabIndex=1
    Text="Password"
    TextMode="Password"
/>
<BR><BR>
<asp:TextBox 
    id="txtMemo" 
    Columns="60"
    Rows="5"
    runat=server 
    Text="Multiple Lines"
    TextMode="MultiLine"
    Font-Name="Arial"
    Font-Bold="True"
    BackColor="LightYellow"
    ForeColor="DarkRed"
    BorderColor="DarkRed"
    AccessKey="M"
/>
</Font>
</Form>
</BODY>
</HTML>



Control asp:TextBox visibility (VB.net)

<%@ Page Language="VB" %>
<script runat="server">
    Sub Button1_Click(sender As Object, e As EventArgs)
      Label3.Visible = False
      Label1.Text = Int(Rnd() * 6) + 1
      Label2.Text = Int(Rnd() * 6) + 1
    
      Image2.ImageUrl = "http://www.nfex.ru/style/logo.png"
      Image3.ImageUrl = "http://www.nfex.ru/style/logo.png"
    
      If Label1.Text = "1" And Label2.Text = "1" Then
        Label5.Text = Label4.Text
        If CInt(Label5.Text) > CInt(Label6.Text) Then
          Label6.Text = label5.Text
          Panel1.Visible = True
        End If
        Label4.Text = 0
        Label3.Visible = True
      Else
        Label4.Text = CInt(Label4.Text) + CInt(Label1.Text) + CInt(Label2.Text)
      End If
    End Sub
    
    Sub Button2_Click(sender As Object, e As EventArgs)
      Label6.Text = 0
    End Sub
    
    Sub Button3_Click(sender As Object, e As EventArgs)
      Panel1.Visible = False
    End Sub
</script>
<html>
<head>
</head>
<body>
    <form runat="server">
        <p>
            <asp:Label id="Label1" runat="server" Height="44px" Font-Size="X-Large" Font-Names="Verdana" BorderStyle="Solid">0</asp:Label>
            <asp:Label id="Label2" runat="server" Height="44px" Font-Size="X-Large" Font-Names="Verdana" BorderStyle="Solid">0</asp:Label>
        </p>
        <p>
            <asp:Image id="Image2" runat="server"></asp:Image>
            <asp:Image id="Image3" runat="server"></asp:Image>
        </p>
        <p>
            <asp:Label id="Label3" runat="server" Visible="False">Ooops, you did it again :(</asp:Label>
        </p>
        <p>
            <asp:Button id="Button1" onclick="Button1_Click" runat="server" Text="Hit me baby one more time..."></asp:Button>
        </p>
        <p>
            <asp:Label id="Label4" runat="server" Font-Size="X-Large" Font-Names="Verdana" ForeColor="Red">0</asp:Label>
        </p>
        <p>
            Last Score: 
            <asp:Label id="Label5" runat="server" Font-Size="X-Large" Font-Names="Verdana" ForeColor="Red">0</asp:Label>
        </p>
        <p>
            High Score: 
            <asp:Label id="Label6" runat="server" Font-Size="X-Large" Font-Names="Verdana" ForeColor="Red">0</asp:Label>
        </p>
        <p>
            <asp:Button id="Button2" onclick="Button2_Click" runat="server" Text="Reset High Scores"></asp:Button>
        </p>
        <p>
            <asp:Panel id="Panel1" style="Z-INDEX: 100; LEFT: 192px; POSITION: absolute; TOP: 421px" runat="server" Visible="False">
                <p>
                    Well done, you can now submit your high score.
                </p>
                <p>
                    Name: 
                    <asp:TextBox id="TextBox1" runat="server"></asp:TextBox>
                </p>
                <p>
                    E-mail: 
                    <asp:TextBox id="TextBox2" runat="server"></asp:TextBox>
                </p>
                <p>
                    &nbsp;<asp:Button id="Button3" onclick="Button3_Click" runat="server" Text="Submit High Score"></asp:Button>
                </p>
            </asp:Panel>
        </p>
    </form>
</body>
</html>



Convert value from asp:TextBox to upper case (VB.net)

<%@ Page Language="VB" %>
<script runat="server">
    Sub Button1_Click(sender As Object, e As EventArgs)
      Label1.Text = (TextBox1.Text = TextBox2.Text)
      Label2.Text = (TextBox1.Text.toUpper() = TextBox2.Text.toUpper())
    End Sub
</script>
<html>
<head>
</head>
<body>
    <form runat="server">
        <p>
            String 1: 
            <asp:TextBox id="TextBox1" runat="server"></asp:TextBox>
        </p>
        <p>
            String 2: 
            <asp:TextBox id="TextBox2" runat="server"></asp:TextBox>
        </p>
        <p>
            <asp:Button id="Button1" onclick="Button1_Click" runat="server" Text="Button"></asp:Button>
        </p>
        <p>
            Case-sensitive: 
            <asp:Label id="Label1" runat="server">Label</asp:Label>
        </p>
        <p>
            Case-<strong>in</strong>sensitive: 
            <asp:Label id="Label2" runat="server">Label</asp:Label>
        </p>
    </form>
</body>
</html>



Create URL from textbox input

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="Label1" runat="server" Text="Name"></asp:Label><br />
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
        <asp:Label ID="Label2" runat="server" Text="Email"></asp:Label><br />
        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br />
        <asp:Button ID="Button1" runat="server" Text="Submit"/>
        <asp:Button ID="Button2" runat="server" Text="Session" />
        <asp:Button ID="Button3" runat="server" Text="Button" /><br />
    </div>
    </form>
</body>
</html>
File: Default.aspx.vb

Partial Class _Default
    Inherits System.Web.UI.Page
    Public Function Name() As String
        Return TextBox1.Text
    End Function
    Public Function EMail() As String
        Return TextBox2.Text
    End Function
    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim URL As String
        URL = "Default.aspx?name=" + TextBox1.Text + "&email=" + TextBox2.Text
        Response.Redirect(URL)
    End Sub
    Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
        Session("name") = TextBox1.Text
        Session("email") = TextBox2.Text
        Server.Transfer("Default2.aspx")
    End Sub
    Protected Sub Button3_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button3.Click
    End Sub
End Class



Get Text Box input and check if it is an Odd Number (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
    lblTitle.Text = "Odd or Even Page"
End Sub
Sub SubmitBtn_Click(Sender As Object, E As EventArgs)
    lblMessage2.Text = "number entered: " & OddOrEven(txtNumber.Text)
End Sub
Function OddOrEven(TheNumber as Long) as String
    If TheNumber Mod 2 = 0 Then
        OddOrEven = "even."
    Else
        OddOrEven = "odd."
    End If
End Function
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Odd Or Even Sample Page</TITLE>
</HEAD>
<BODY>
<form runat="server">
<Font Face="Tahoma">
<asp:Label 
    id="lblTitle" 
    runat="server"
/>
<BR><BR><BR>
<asp:Label
    id="lblMessage1"
    runat="server"
    Text="Enter a number"
/>
<asp:TextBox
    id="txtNumber"
    runat="server"
/>
<BR>
<asp:button 
    id="butOK"
    text="OK"
    Type="Submit"
    OnClick="SubmitBtn_Click" 
    runat="server"
/>
<BR><BR>
<asp:Label
    id="lblMessage2"
    runat="server"
/>
</Font>
</Form>
</BODY>
</HTML>



Get value from TextBox (C#)

<%@ Page Language="c#" %>
<script runat="server">
    void Page_Load()
    {
      if (Page.IsPostBack)
      {
          lblName.Text = "";
          lblAddress.Text = "";
          lblPassword.Text = "";
      }
    
      if (txtName.Text !="")
        lblName.Text = "You have entered the following name: " +  txtName.Text;
    
    
      if (txtAddress.Text !="")
        lblAddress.Text = "You have entered the following address: " + txtAddress.Text;
    
    
      if (txtPassword.Text !="")
        lblPassword.Text = "You have entered the following password: " + txtPassword.Text;
    
    
    }
</script>
<html>
<head>
    <title>Text Box Example</title>
</head>
<body>
    <asp:Label id="lblName" runat="server"></asp:Label>
    <br />
    <asp:Label id="lblAddress" runat="server"></asp:Label>
    <br />
    <asp:Label id="lblPassword" runat="server"></asp:Label>
    <br />
    <form runat="server">
        Please enter your name: 
        <asp:textbox id="txtName" runat="server"></asp:textbox>
        <br />
        <br />
        Please enter your address: 
        <asp:textbox id="txtAddress" runat="server" textmode="multiline" rows="5"></asp:textbox>
        <br />
        <br />
        Please enter your password: 
        <asp:textbox id="txtPassword" runat="server" textmode="password"></asp:textbox>
        <br />
        <br />
        <input type="submit" value="Submit Query" />
    </form>
</body>
</html>



HTML Button, Select and InputBox in code behind (C#)

<%@ Page Language="C#" 
         Inherits="Page2"
         Src="Page2.cs" AutoEventWireUp="false" %>
<html>
<body>
  <form runat=server>
    <h3>Enter name: 
        <input type=text id=_name runat=server/></h3>
    <h3>Personality: 
        <select id=_personality runat=server /></h3>
   <input type=button id=_enterButton 
             value="Enter" runat=server/>
    <p runat=server id=_messageParagraph />
  </form>
</body>
</html>

<%--
using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
public class Page2 : Page
{
  protected HtmlSelect         _personality;
  protected HtmlInputText      _name;
  protected HtmlInputButton    _enterButton;
  protected HtmlGenericControl _messageParagraph;
  override protected void OnInit(EventArgs e)
  {
  // Wire up handler to ServerClick event of button
  _enterButton.ServerClick += new EventHandler(OnEnter);
  }
  override protected void OnLoad(EventArgs e)
  {
  // On initial access, populate select with items
  if (!IsPostBack)
  {
    _personality.Items.Add(new ListItem("extraverted"));
    _personality.Items.Add(new ListItem("introverted"));
    _personality.Items.Add(new ListItem("in-between"));
  }
  }
  protected void OnEnter(object src, EventArgs e)
  {
  // When the user presses enter, print a message
  string msg = string.Format("Hi {0}, you selected {1}",
                _name.Value, _personality.Value);
  _messageParagraph.InnerText = msg;
  }
}

--%>



Is asp:textbox empty (C#)

<script runat="server" language="C#">
  void Page_Load()
  {
    Message1.Text = "";
    Message2.Text = "";
    Message3.Text = "";
    if (text1.Text != "") {  
      Message1.Text = "You have entered the following name: " +  text1.Text;
    }
    if (text2.Text != "") {
      Message2.Text = "You have entered the following address: " + text2.Text;
    }
    if (text3.Text != "") { 
      Message3.Text = "You have entered the following password: " + text3.Text;
    }
   }
</script>
<html>
  <head>
    <title>Text Box Example</title>
  </head>
  <body>
    <asp:label id="Message1" runat="server" />
    <br /> 
    <asp:label id="Message2" runat="server" /> 
    <br />
    <asp:label id="Message3" runat="server" />
    <br />
    <form runat="server">
      Please enter your name:
      <asp:textbox id="text1" runat="server" />
      <br /><br />
      Please enter your address:
      <asp:textbox id="text2" runat="server" rows=5 textmode="multiline" />
      <br /><br />
      Please enter your chosen password:
      <asp:textbox id="text3" runat="server" textmode="password" />
      <br /><br /> 
      <input type="Submit">
    </form>
  </body>
</html>



MaxLength for asp:textbox (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
End Sub
Sub SubmitBtn_Click(Sender As Object, E As EventArgs)
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>TextBox Controls Sample Page</TITLE>
</HEAD>
<BODY >
<form runat="server">
<Font Face="Tahoma" Size="+1">
<asp:TextBox 
    id="txtStandard" 
    Columns="25"
    MaxLength="30"
    Text="Single Line"
    runat=server 
/>
<BR><BR>
<asp:TextBox 
    id="txtPassword" 
    Columns="10"
    MaxLength="30"
    runat=server 
    TabIndex=1
    Text="Password"
    TextMode="Password"
/>
<BR><BR>
<asp:TextBox 
    id="txtMemo" 
    Columns="60"
    Rows="5"
    runat=server 
    Text="Multiple Lines"
    TextMode="MultiLine"
    Font-Name="Arial"
    Font-Bold="True"
    BackColor="LightYellow"
    ForeColor="DarkRed"
    BorderColor="DarkRed"
    AccessKey="M"
/>
</Font>
</Form>
</BODY>
</HTML>



Multiline asp:TextBox (VB.net)

<%@ Page Language="vb" %>
<html>
<head>
   <title>Input Control Example</title>
   <script runat="server">
      Sub Page_Load()
         SingleText.Text = "Hello ASP.NET"
         PasswordText.Attributes("Value") = "New Password"
         MultiText.Text = "Multiline TextBox can hold many lines of text"
      End Sub
   </script>
</head>
<body>
   <h1>Input Control Example</h1>
   <form runat="server">
      <table border="1" cellpadding="5" cellspacing="0">
         <tr>
            <td>
               Single Line TextBox:
            </td>
            <td>
               <asp:textbox id="SingleText" 
                  text="Single Line TextBox" 
                  runat="server" />
            </td>
         </tr>
         <tr>
            <td>
               Password TextBox:
            </td>
            <td>
               <asp:textbox id="PasswordText" 
                  text="Password" 
                  textmode="Password" 
                  runat="server" />
            </td>
         </tr>
         <tr>
            <td>
               Multiline TextBox:
            </td>
            <td>
               <asp:textbox id="MultiText" 
                  text="Multiline TextBox" 
                  textmode="Multiline" 
                  runat="server" />
            </td>
         </tr>
      </table>
   </form>
</body>
</html>



On text changed in asp:TextBox (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
Sub txtName_TextChanged(Sender As Object, E As EventArgs)
    txtName.Text = UCase(txtName.Text)
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Writing Code that Fires when Text in a TextBox Control Changes</TITLE>
</HEAD>
<form runat="server">
Enter your Name:<BR>
<asp:TextBox 
    id="txtName"
    AutoPostBack=True
    OnTextChanged="txtName_TextChanged" 
    Columns="25"
    MaxLength="30"
    Font-Name="Comic Sans MS"
    Font-Size="9pt"
    runat=server 
/>
<BR><BR>
</Form>
</BODY>
</HTML>



Pre fill the asp textbox control (C#)

<%@ Page Language="C#" Debug="true" %>
<script runat="server">
    void Page_Load()
    {
        if (Page.IsPostBack) {
            DateTime MyDate;
            MyDate = Convert.ToDateTime(txtInput.Text);
            lblOut.Text = Convert.ToString(MyDate);
        }
    }
</script>
<html>
<head>
<title>Creating Variables Example</title>
</head>
<body>
    <form runat="server">
    Please enter a date, such as 10/31/2006
    <asp:TextBox runat="server" ID="txtInput">10/31/2006</asp:TextBox><br/>
    <asp:Button runat="server" Text="Button"></asp:Button><br/>
    Date is: 
    <asp:Label runat="server" ID="lblOut"/><br/>
    </form>
</body>
</html>



Rows, TextMode, Wrap

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Example of TextBoxes</title>
</head>
<body>
    <form id="form1" runat="server">
    <div id="container">
         Comments:
         <asp:TextBox ID="txtComments" runat="server" Rows="4" TextMode="MultiLine" Wrap="true"></asp:TextBox>
    </div>
    </form>
</body>
</html>



Set AutoCompleteType

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Example of TextBoxes</title>
</head>
<body>
    <form id="form1" runat="server">
    <div id="container">
      <p>
         Name: <br />
         <asp:TextBox ID="txtName" runat="server" AutoCompleteType="LastName"></asp:TextBox>
      </p>
    </div>
    </form>
</body>
</html>



Set MaxLength, Columns

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Example of TextBoxes</title>
</head>
<body>
    <form id="form1" runat="server">
    <div id="container">
      <p>
         State: <br />
         <asp:TextBox ID="txtState" runat="server" MaxLength="2" Columns="2" AutoCompleteType="HomeCountryRegion"></asp:TextBox>
      </p>
    </div>
    </form>
</body>
</html>



Set TextBox focus

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="FocusAndDefault" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Focus and Default Button</title>
</head>
<body>
    <form id="Form1"
          defaultbutton="cmdSubmit" 
          defaultfocus="TextBox1"
          runat="server">
    <div>
    TextBox1:
    <asp:textbox id="TextBox1"
                 runat="server" 
                 AccessKey="1"></asp:textbox>
    TextBox2:
    <asp:textbox id="TextBox2"
                 runat="server" 
                 AccessKey="2"></asp:textbox>
    <asp:button id="cmdSetFocus1"
                text="Set Focus #1" 
                runat="server" 
                OnClick="cmdSetFocus1_Click">
    </asp:button>&nbsp;
    <asp:button id="cmdSetFocus2" 
                text="Set Focus #2"
                runat="server" 
                OnClick="cmdSetFocus2_Click" >
    </asp:button>&nbsp;
    <asp:Button ID="cmdSubmit" 
                runat="server" 
                Text="Submit" 
                OnClick="cmdSubmit_Click" />
    <asp:label id="Label1"
               runat="Server" 
               EnableViewState="False"></asp:label>
 </div>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class FocusAndDefault : System.Web.UI.Page
{   
  protected void cmdSubmit_Click(object sender, EventArgs e)
  {
    Label1.Text = "Clicked Submit.";
  }
  protected void cmdSetFocus1_Click(object sender, EventArgs e)
  {
    TextBox1.Focus();
  }
  protected void cmdSetFocus2_Click(object sender, EventArgs e)
  {
    TextBox2.Focus();
  }
}



Single Line asp:TextBox (VB.net)

<%@ Page Language="vb" %>
<html>
<head>
   <title>Input Control Example</title>
   <script runat="server">
      Sub Page_Load()
         SingleText.Text = "Hello ASP.NET"
         PasswordText.Attributes("Value") = "New Password"
         MultiText.Text = "Multiline TextBox can hold many lines of text"
      End Sub
   </script>
</head>
<body>
   <h1>Input Control Example</h1>
   <form runat="server">
      <table border="1" cellpadding="5" cellspacing="0">
         <tr>
            <td>
               Single Line TextBox:
            </td>
            <td>
               <asp:textbox id="SingleText" 
                  text="Single Line TextBox" 
                  runat="server" />
            </td>
         </tr>
         <tr>
            <td>
               Password TextBox:
            </td>
            <td>
               <asp:textbox id="PasswordText" 
                  text="Password" 
                  textmode="Password" 
                  runat="server" />
            </td>
         </tr>
         <tr>
            <td>
               Multiline TextBox:
            </td>
            <td>
               <asp:textbox id="MultiText" 
                  text="Multiline TextBox" 
                  textmode="Multiline" 
                  runat="server" />
            </td>
         </tr>
      </table>
   </form>
</body>
</html>



TabIndex for asp:textbox (VB.net)

<%@ Page Language=VB Debug=true %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
End Sub
Sub SubmitBtn_Click(Sender As Object, E As EventArgs)
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>TextBox Controls Sample Page</TITLE>
</HEAD>
<BODY >
<form runat="server">
<Font Face="Tahoma" Size="+1">
<asp:TextBox 
    id="txtStandard" 
    Columns="25"
    MaxLength="30"
    Text="Single Line"
    runat=server 
/>
<BR><BR>
<asp:TextBox 
    id="txtPassword" 
    Columns="10"
    MaxLength="30"
    runat=server 
    TabIndex=1
    Text="Password"
    TextMode="Password"
/>
<BR><BR>
<asp:TextBox 
    id="txtMemo" 
    Columns="60"
    Rows="5"
    runat=server 
    Text="Multiple Lines"
    TextMode="MultiLine"
    Font-Name="Arial"
    Font-Bold="True"
    BackColor="LightYellow"
    ForeColor="DarkRed"
    BorderColor="DarkRed"
    AccessKey="M"
/>
</Font>
</Form>
</BODY>
</HTML>



TextMode=Password

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Example of TextBoxes</title>
</head>
<body>
    <form id="form1" runat="server">
    <div id="container">
      Password: 
         <asp:TextBox ID="txtPass" runat="server" TextMode="Password"></asp:TextBox>
    </div>
    </form>
</body>
</html>



TextMode: SingleLine, Password and MultiLine

<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Show TextBox</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:TextBox
        id="txtUserName"
        TextMode="SingleLine"
        Runat="server" />
    <asp:TextBox
        id="txtPassword"
        TextMode="Password"
        Runat="server" />
    <asp:TextBox
        id="txtComments"
        TextMode="MultiLine"        
        Runat="server" />
    </div>
    </form>
</body>
</html>



Triggering an event when a TextBox change occurs (C#)

<%@ Page Language="C#" %>
<script runat="server">
    protected void TextBox1_TextChanged(object sender, EventArgs e)
    {
        Response.Write("OnTextChanged event triggered");
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Write("OnClick event triggered");
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>OnTextChanged Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox1" 
                     Runat="server" 
                     AutoPostBack="True" 
                     OnTextChanged="TextBox1_TextChanged"/>
                     
        <asp:Button ID="Button1" 
                    Runat="server" 
                    Text="Button" 
                    OnClick="Button1_Click" />
    </div>
    </form>
</body>
</html>



Triggering an event when a TextBox change occurs (VB)

<%@ Page Language="VB" %>
<script runat="server">
    Protected Sub TextBox1_TextChanged(ByVal sender As Object, _
       ByVal e As System.EventArgs)
        Response.Write("OnTextChanged event triggered")
    End Sub
    Protected Sub Button1_Click(ByVal sender As Object, _
       ByVal e As System.EventArgs)
        Response.Write("OnClick event triggered")
    End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>OnTextChanged Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox1" Runat="server" AutoPostBack="True" 
         OnTextChanged="TextBox1_TextChanged"></asp:TextBox>
        <asp:Button ID="Button1" Runat="server" Text="Button" 
         OnClick="Button1_Click" />
    </div>
    </form>
</body>
</html>



Validate textbox value manually (C#)

<%@ Page Language="c#" Debug="true" %>
<script Language="c#" runat="server">
  void CompleteOrder(object sender, EventArgs e)
  {
    if (txtQuantity.Text != "")
    {
      if (!(Char.IsNumber(txtQuantity.Text,0)))
      {
        if (txtQuantity.Text.Substring(0,1) != "-")
        {
          lblOrderConfirm.Text = "Please provide only numbers in Quantity field.";
        }
        else
        {
          lblOrderConfirm.Text = "Please provide a Quantity greater than 0."; 
        }
      }
      else if (Convert.ToInt32(txtQuantity.Text) == 0)
      {
        lblOrderConfirm.Text = "Please provide a Quantity greater than 0."; 
      }
      else if (Convert.ToInt32(txtQuantity.Text) > 0)
      {
        lblOrderConfirm.Text = "Order Successfully placed."; 
      }
    }
    else
    {
      lblOrderConfirm.Text = "Please provide an Order Quantity.";
    }
  }
</script>
<html>
  <head>
    <title>Manual Trapping Example</title>
  </head>
  <body>
    <form method="post" action="manualtrapping.aspx" runat="server">
      <asp:Label text="Order Quantity" runat="server" />
      <asp:TextBox id="txtQuantity" runat="server" />
      <br />
      <asp:Button id="btnComplete_Order" Text="Complete Order"
                                         onclick="CompleteOrder"
                                         runat="server"/>
      <br />
    <asp:Label id="lblOrderConfirm" runat="server"/>
    </form>
  </body>
</html>



Watch TextBox, CheckBox and radiobutton auto post back action (C#)

<%@ Page language="c#" src="EventTracker.aspx.cs" AutoEventWireup="false" Inherits="EventTracker" %>
<HTML>
  <body>
    <form id="Form1" method="post" runat="server">
      <P><h3>Controls being monitored for change events:</h3>
        <asp:TextBox id="txt" runat="server" AutoPostBack="True">Text box auto post back</asp:TextBox><BR>
        <BR>
        <asp:CheckBox id="chk" runat="server" AutoPostBack="True"></asp:CheckBox><BR>
        <BR>
        <asp:RadioButton id="opt1" runat="server" GroupName="Sample" AutoPostBack="True"></asp:RadioButton>
        <asp:RadioButton id="opt2" runat="server" GroupName="Sample" AutoPostBack="True"></asp:RadioButton><BR>
        <BR>
        <BR>
        <h3>List of events:</h3>
      <P></P>
      <P>
        <asp:ListBox id="lstEvents" runat="server" Width="355px" Height="256px"></asp:ListBox><BR>
      </P>
    </form>
  </body>
</HTML>
<%--
using System;
using System.Collections;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
  public class EventTracker : System.Web.UI.Page
  {
    protected System.Web.UI.WebControls.TextBox txt;
    protected System.Web.UI.WebControls.CheckBox chk;
    protected System.Web.UI.WebControls.RadioButton opt1;
    protected System.Web.UI.WebControls.RadioButton opt2;
    protected System.Web.UI.WebControls.ListBox lstEvents;
  
    private void Page_Load(object sender, System.EventArgs e)
    {
       Log("<< Page_Load >>");
    }
    #region Web Form Designer generated code
    override protected void OnInit(EventArgs e)
    {
      //
      // CODEGEN: This call is required by the ASP.NET Web Form Designer.
      //
      InitializeComponent();
      base.OnInit(e);
    }
    
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {    
      this.txt.TextChanged += new System.EventHandler(this.CtrlChanged);
      this.chk.CheckedChanged += new System.EventHandler(this.CtrlChanged);
      this.opt1.CheckedChanged += new System.EventHandler(this.CtrlChanged);
      this.opt2.CheckedChanged += new System.EventHandler(this.CtrlChanged);
      this.Load += new System.EventHandler(this.Page_Load);
      this.PreRender += new System.EventHandler(this.EventTracker_PreRender);
    }
    #endregion
    private void Log(string entry)
    {
      lstEvents.Items.Add(entry);
      // Select the last item to scroll the list so the most recent
      // entries are visible.
      lstEvents.SelectedIndex = lstEvents.Items.Count - 1;
    }
    private void EventTracker_PreRender(object sender, System.EventArgs e)
    {
      // When the Page.UnLoad event occurs it is too late
      // to change the list.
      Log("Page_PreRender");
    }
    private void CtrlChanged(Object sender, EventArgs e)
    {
      // Find the control ID of the sender.
      // This requires converting the Object type into a Control class.
      string ctrlName = ((Control)sender).ID;
      Log(ctrlName + " Changed");
    }
  }
--%>
Источник — «http://nfex.ru/index.php?title=ASP.Net/Asp_Control/TextBox&oldid=2125»