ASP.NET Tutorial/Validation/ValidationSummary

Содержание

1 Important properties of ValidationSummary control
2 RequiredFieldValidatorSummary DisplayMode
3 Use ValidationSummary to display message box (C#)
4 ValidationSummary DisplayMode=BulletList
5 ValidationSummary displays a list of validation errors

Important properties of ValidationSummary control

DisplayMode: how the error messages are formatted. 
             Possible values are BulletList, List, and SingleParagraph.
HeaderText:  display header text above the validation summary.
ShowMessageBox: display a popup alert box.
ShowSummary:    hide the validation summary in the page.
<%@ Page Language="C#" %>
<!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 Summary Popup</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:ValidationSummary
        id="ValidationSummary1"
        ShowMessageBox="true"
        ShowSummary="false"
        Runat="server" />
    <asp:Label
        id="lblFirstName"
        Text="First Name:"
        AssociatedControlID="txtFirstName"
        Runat="server" />
    <br />
    <asp:TextBox
        id="txtFirstName"
        Runat="server" />
    <asp:RequiredFieldValidator
        id="reqFirstName"
        ErrorMessage="First Name is required"
        ControlToValidate="txtFirstName"
        Display="None"
        Runat="server" />
    <br /><br />
    <asp:Label
        id="lblLastName"
        Text="Last Name:"
        AssociatedControlID="txtLastName"
        Runat="server" />
    <br />
    <asp:TextBox
        id="txtLastName"
        Runat="server" />
    <asp:RequiredFieldValidator
        id="reqLastName"
        ErrorMessage="Last Name is required"
        ControlToValidate="txtLastName"
        Display="None"
        Runat="server" />
    <br /><br />
    <asp:Button
        id="btnSubmit"
        Text="Submit"
        Runat="server" />
    </div>
    </form>
</body>
</html>

RequiredFieldValidatorSummary DisplayMode

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="Default_aspx" %>
<!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>Required Field Validation</title>
</head>
<body>
    <form runat="server" ID="frmBugs">
      <asp:Label ID="lblMsg" 
                  Text="Please report your bug here" 
                  ForeColor="red" Font-Name="Verdana" 
                  Font-Size="10" runat=server />
      <ASP:DropDownList id=ddlBooks runat=server>
                     <asp:ListItem>-- Please Pick A Book --</asp:ListItem>
                     <asp:ListItem>Programming ASP.NET</asp:ListItem>
                     <asp:ListItem>Programming .NET Windows Applications</asp:ListItem>
                     <asp:ListItem>Programming C#</asp:ListItem>
                     <asp:ListItem>Programming Visual Basic 2005</asp:ListItem>
                     <asp:ListItem>
                        Teach Yourself C++ In 21 Days
                     </asp:ListItem>
                     <asp:ListItem>
                        Teach Yourself C++ In 24 Hours
                     </asp:ListItem>
                     <asp:ListItem>TY C++ In 10 Minutes</asp:ListItem>
                     <asp:ListItem>TY More C++ In 21 Days</asp:ListItem>
                     <asp:ListItem>C++ Unleashed</asp:ListItem>
                  </ASP:DropDownList>
               </td>
               <!-- Validator for the drop down -->
               <td align=center rowspan=1>
                  <asp:RequiredFieldValidator 
                  id="reqFieldBooks" 
                  ControlToValidate="ddlBooks" 
                  Display="Static" 
                  InitialValue="-- Please Pick A Book --" 
                  ErrorMessage = "You did not choose a book from the drop-down"
                  Width="100%" runat=server> * </asp:RequiredFieldValidator>
               <td>
                  <ASP:RadioButtonList id=rblEdition 
                  RepeatLayout="Flow" runat=server>
                     <asp:ListItem>1st</asp:ListItem>
                     <asp:ListItem>2nd</asp:ListItem>
                     <asp:ListItem>3rd</asp:ListItem>
                     <asp:ListItem>4th</asp:ListItem>
                  </ASP:RadioButtonList>
               </td>
                <td align=center rowspan=1>
                  <asp:RequiredFieldValidator 
                  id="reqFieldEdition" 
                  ControlToValidate="rblEdition" 
                  ErrorMessage = "You did not pick an edition"
                  Display="Static" 
                  InitialValue="" 
                  Width="100%" runat=server>*</asp:RequiredFieldValidator>
                  <ASP:TextBox id=txtBug 
                               runat=server 
                               width="183px" 
                               textmode="MultiLine" 
                               height="68px"/>
                  <asp:RequiredFieldValidator 
                  id="reqFieldBug" 
                  ControlToValidate="txtBug" 
                  ErrorMessage = "You must provide bug details"
                  Display="Static" 
                  Width="100%" runat=server>*</asp:RequiredFieldValidator>
                    <asp:DropDownList id="lstDisplay" 
                    AutoPostBack=true 
                    OnSelectedIndexChanged="lstDisplay_SelectedIndexChanged"
                    runat=server>
                            <asp:ListItem Selected ="true">Summary</asp:ListItem>
                            <asp:ListItem>Msg. Box</asp:ListItem>
                    </asp:DropDownList>
                    <asp:DropDownList id="lstFormat" 
                    AutoPostBack=true 
                    OnSelectedIndexChanged="lstFormat_SelectedIndexChanged"
                    runat=server>
                        <asp:ListItem>List</asp:ListItem>
                        <asp:ListItem Selected="true">Bulleted List</asp:ListItem>
                        <asp:ListItem>Single Paragraph</asp:ListItem>
                    </asp:DropDownList>
                  <ASP:Button id=btnSubmit 
                  text="Submit Bug" runat=server OnClick="btnSubmit_Click" />
         <asp:ValidationSummary 
         ID="ValSum" runat="server" 
         DisplayMode="BulletList"
         HeaderText="The following errors were found: " ShowSummary="True" />
    </div>
    </form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
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 Default_aspx : System.Web.UI.Page 
{
  protected void btnSubmit_Click(object sender, EventArgs e)
  {
    if (Page.IsValid)
    {
      lblMsg.Text = "Page is Valid!";
    }
    else
    {
      lblMsg.Text = "Some of the required fields are empty";
    }
  }
  protected void lstFormat_SelectedIndexChanged(object sender, EventArgs e)
  {
    ValSum.DisplayMode =
       (ValidationSummaryDisplayMode)
       lstFormat.SelectedIndex;
  }
  protected void lstDisplay_SelectedIndexChanged(object sender, EventArgs e)
  {
    ValSum.ShowSummary = lstDisplay.SelectedIndex == 0;
    ValSum.ShowMessageBox = lstDisplay.SelectedIndex == 1;
  }
}

Use ValidationSummary to display message box (C#)

File: Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ValidationSummary" %>
<!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>Validation Summary</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    A number (1 to 10):
  <asp:textbox id="txtValidated" runat="server"></asp:textbox>&nbsp;
  <asp:rangevalidator id="RangeValidator" 
                      runat="server" 
                      Type="Integer" 
                      MinimumValue="1" 
                      MaximumValue="10" 
                      ControlToValidate="txtValidated" 
                      Text="<img src="ErrorIcon.jpg" alt="Error" />"
                        ErrorMessage="The First Number Is Not In The Range">
    </asp:rangevalidator>
  Not validated:
  <asp:textbox id="txtNotValidated" runat="server"></asp:textbox><br/>
    
    <br />
  <asp:button id="cmdOK" 
              runat="server" 
              Text="OK" 
              OnClick="cmdOK_Click" 
              Width="44px"></asp:button><br />
  <br />
  <asp:label id="lblMessage" 
             runat="server" 
             EnableViewState="False"></asp:label><br />
  <br />
  <asp:ValidationSummary id="ValidationSummary1" 
                         runat="server" 
                         ShowMessageBox="True"></asp:ValidationSummary>
    </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 ValidationSummary : System.Web.UI.Page
{
  protected void cmdOK_Click(object sender, EventArgs e)
  {
    if (!Page.IsValid) return;
    lblMessage.Text = "cmdOK_Click event handler executed.";
  }
}

ValidationSummary DisplayMode=BulletList

<%@ Page Language="C#"%>
<!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>Using ValidationSummary</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      
      Book
      <br />
      <asp:DropDownList ID="lstBooks" runat="server">
         <asp:ListItem Value="0" Selected="True">Please pick a book</asp:ListItem>
         <asp:ListItem Value="1">A</asp:ListItem>
         <asp:ListItem Value="2">B</asp:ListItem>
         <asp:ListItem Value="3">C</asp:ListItem>
      </asp:DropDownList>
      <asp:RequiredFieldValidator ID="reqBook" 
                                  runat="server" 
                                  ControlToValidate="lstBooks" 
                                  SetFocusOnError="true"
                                  Text="*"
                                  InitialValue="0" 
                                  Display="static" 
                                  ErrorMessage="Please choose a book from list"/>
      
      
      User Name:<br />
      <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox>
      <asp:RequiredFieldValidator ID="reqUserName" 
                                  runat="server" 
                                  ControlToValidate="txtUserName" 
                                  SetFocusOnError="true"
                                  Text="*"
                                  Display="static" 
                                  ErrorMessage="Please enter a User Name"/>
      
      
      Password:<br />
      <asp:TextBox ID="txtPassword" runat="server"></asp:TextBox>
      <asp:RequiredFieldValidator ID="reqPassword" 
                                  runat="server" 
                                  ControlToValidate="txtPassword"  
                                  SetFocusOnError="true"
                                  Text="*"
                                  Display="static" 
                                  ErrorMessage="Please enter a password"/>
            
      
      <asp:ValidationSummary id="valSum" 
                             runat="server"   
                         DisplayMode="BulletList"
                         HeaderText="The following errors were found:"
                         ShowMessageBox="false" 
                         ShowSummary="true" />
      
      
      <asp:Button ID="btnSubmit" Text="Click this to test validation" runat="server" />
      
    </div>
    </form>
</body>
</html>

ValidationSummary displays a list of validation errors

<%@ Page Language="C#" %>
<!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 ValidationSummary</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:ValidationSummary
        id="ValidationSummary1"
        Runat="server" />
    <asp:Label
        id="lblFirstName"
        Text="First Name:"
        AssociatedControlID="txtFirstName"
        Runat="server" />
    <br />
    <asp:TextBox
        id="txtFirstName"
        Runat="server" />
    <asp:RequiredFieldValidator
        id="reqFirstName"
        Text="(Required)"
        ErrorMessage="First Name is required"
        ControlToValidate="txtFirstName"
        Runat="server" />
    <br /><br />
    <asp:Label
        id="lblLastName"
        Text="Last Name:"
        AssociatedControlID="txtLastName"
        Runat="server" />
    <br />
    <asp:TextBox
        id="txtLastName"
        Runat="server" />
    <asp:RequiredFieldValidator
        id="reqLastName"
        Text="(Required)"
        ErrorMessage="Last Name is required"
        ControlToValidate="txtLastName"
        Runat="server" />
    <br /><br />
    <asp:Button
        id="btnSubmit"
        Text="Submit"
        Runat="server" />
    </div>
    </form>
</body>
</html>

ASP.NET Tutorial/Validation/ValidationSummary

Содержание

Important properties of ValidationSummary control

RequiredFieldValidatorSummary DisplayMode

Use ValidationSummary to display message box (C#)

ValidationSummary DisplayMode=BulletList

ValidationSummary displays a list of validation errors

Навигация

Персональные инструменты

Пространства имён

Варианты

Просмотры

Ещё

Поиск

Разделы

Инструменты

Навигация