c# example - string replace character at index
string-replace-character-at-index.aspx
<%@ Page Language="C#" AutoEventWireup="true"%>
<!DOCTYPE html>
<script runat="server">
protected void Button1_Click(object sender, System.EventArgs e)
{
//this line create a string variable.
string stringValue = "red green blue yellow red snow magenta";
Label1.Text = "string......................<br />";
Label1.Text += stringValue;
string first = stringValue.Remove(22);
string last = stringValue.Remove(0,22);
//this line replace 'r' characters with '#' in string after index 22.
string lastReplaced = last.Replace('r', '#');
string modifiedString = first.Insert(first.Length, lastReplaced);
Label1.Text += "<br /><br />splitted string and replaced.....................";
Label1.Text += "<br />first: " + first;
Label1.Text += "<br />last: " + last;
Label1.Text += "<br />replaced: " + lastReplaced;
Label1.Text += "<br /><br />replaced string (start index 22)......................";
Label1.Text += "<br />" + modifiedString;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>c# example - string replace character at index</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:MidnightBlue; font-style:italic;">
c# example - string replace character at index
</h2>
<hr width="550" align="left" color="Gainsboro" />
<asp:Label
ID="Label1"
runat="server"
Font-Size="X-Large"
>
</asp:Label>
<br /><br />
<asp:Button
ID="Button1"
runat="server"
Text="string replace character at index"
OnClick="Button1_Click"
Height="40"
Font-Bold="true"
/>
</div>
</form>
</body>
</html>

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