Simple Program for Lowercase Character Change into Uppercase in C#

This code describe about to lower case character change the uppercase in C#.

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-
transitional.dtd">
<script runat="server">
protected void page_Load(object sender, System.EventArgs e)
{
if(!this.IsPostBack)
{
TextBox1.Text = "Click the button for change characters to uppercase.";
TextBox1.Width = 450;
}
}
protected void Button1_Click(object sender, System.EventArgs e)
{
string myString = TextBox1.Text.ToString();
string modifiedString = myString.ToUpper();
Label1.Text = "String converted successfully to upper case!";
TextBox1.Text = modifiedString;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>How to convert (change) a string to uppercase characters in asp.net</title>
</head>
<body>
<form id="form2" runat="server">
<div>
<h2 style="color:Navy">asp.net string example: ToUpper()</h2> <asp:Label
ID="Label1"
runat="server"
Font-Size="Large"
ForeColor="Crimson"
Font-Bold="true"
Font-Italic="true"
>
</asp:Label>
<br /><br />
<asp:Label
ID="Label2"
runat="server"
Text="Test String"
ForeColor="DarkCyan"
>
</asp:Label>
<asp:TextBox
ID="TextBox1"
runat="server"
BackColor="DarkCyan"
ForeColor="Snow"
>
</asp:TextBox>
<br /><br />
<asp:Button
ID="Button2"
runat="server"
OnClick="Button1_Click"
Font-Bold="true"
Text="Change String To Uppercase"
ForeColor="DarkCyan"
/>
</div>
</form>
</body>
</html>