ASP.NET Tutorial/ASP.net Controls/Border
Set border style dynamically (C#)
<source lang="csharp">
File: Default.aspx <%@ Page language="c#" Inherits="GreetingCardMaker" CodeFile="Default.aspx.cs" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html xmlns="http://www.w3.org/1999/xhtml">
<head> <title>Greeting Card Maker</title> </head> <body> <form runat="server">
Choose a background color:
<asp:dropdownlist ID="lstBackColor"
runat="server"
Height="22px"
Width="194px"></asp:dropdownlist>
Choose a font:
<asp:dropdownlist ID="lstFontName"
runat="server"
Height="22px"
Width="194px"></asp:dropdownlist>
Specify a numeric font size:
<asp:textbox ID="txtFontSize" runat="server"></asp:textbox>
Choose a border style:
<asp:radiobuttonlist ID="lstBorder"
runat="server"
Height="59px"
Width="177px"
Font-Size="X-Small"></asp:radiobuttonlist>
<asp:checkbox ID="chkPicture"
runat="server"
Text="Add the Default Picture"></asp:checkbox>
Enter the greeting text below:
<asp:textbox ID="txtGreeting"
runat="server"
Height="85px"
Width="240px"
TextMode="MultiLine"></asp:textbox>
<asp:button ID="cmdUpdate"
runat="server"
Height="24px"
Width="71px"
Text="Update"
onclick="cmdUpdate_Click"></asp:button>
<asp:panel ID="pnlCard" runat="server"
Height="507px" Width="339px"
HorizontalAlign="Center">
<asp:Label ID="lblGreeting"
runat="server"
Height="150px"
Width="256px"></asp:Label>
<asp:Image ID="imgDefault"
runat="server"
Height="160px"
Width="212px"
Visible="False"></asp:Image>
</asp:panel>
</form> </body>
</html> File: Default.aspx.cs 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 partial class GreetingCardMaker : System.Web.UI.Page {
protected void Page_Load(object sender, System.EventArgs e)
{
if (this.IsPostBack == false)
{
lstBackColor.Items.Add("White");
lstBackColor.Items.Add("Red");
lstBackColor.Items.Add("Green");
lstBackColor.Items.Add("Blue");
lstBackColor.Items.Add("Yellow");
lstFontName.Items.Add("Times New Roman");
lstFontName.Items.Add("Arial");
lstFontName.Items.Add("Verdana");
lstFontName.Items.Add("Tahoma");
ListItem item = new ListItem();
item.Text = BorderStyle.None.ToString();
item.Value = ((int)BorderStyle.None).ToString();
lstBorder.Items.Add(item);
item = new ListItem();
item.Text = BorderStyle.Double.ToString();
item.Value = ((int)BorderStyle.Double).ToString();
lstBorder.Items.Add(item);
item = new ListItem();
item.Text = BorderStyle.Solid.ToString();
item.Value = ((int)BorderStyle.Solid).ToString();
lstBorder.Items.Add(item);
lstBorder.SelectedIndex = 0;
imgDefault.ImageUrl = "default.png";
}
}
protected void cmdUpdate_Click(object sender, System.EventArgs e)
{
pnlCard.BackColor = Color.FromName(lstBackColor.SelectedItem.Text);
lblGreeting.Font.Name = lstFontName.SelectedItem.Text;
try
{
if (Int32.Parse(txtFontSize.Text) > 0)
{
lblGreeting.Font.Size = FontUnit.Point(Int32.Parse(txtFontSize.Text));
}
}catch {
}
pnlCard.BorderStyle = (BorderStyle)Int32.Parse(lstBorder.SelectedItem.Value);
if (chkPicture.Checked == true)
{
imgDefault.Visible = true;
}else {
imgDefault.Visible = false;
}
lblGreeting.Text = txtGreeting.Text;
}
}</source>
