In this example I show that how easily we can create User Control and then use it in asp.net. Here first I create a User Control name CalendarUserControl.ascx, then place it Default.aspx web form. Here is the source code of both files.
<%@ Control Language="C#" ClassName="CalendarUserControl" %>
<script runat="server">
protected void Calendar1_SelectionChanged(object sender, System.EventArgs e) {
Label1.Text = "Your selected Date is: " +
Calendar1.SelectedDate.ToShortDateString();
}
</script>
<h2>This is user control</h2>
<asp:Label ID="Label1" runat="server" Font-Size="Large" ForeColor="DarkGreen"></asp:Label>
<br /><br />
<asp:Calendar ID="Calendar1" runat="server" BackColor="Beige" OnSelectionChanged="Calendar1_SelectionChanged">
</asp:Calendar>
<%@ Page Language="C#" %>
<%@ Register src="CalendarUserControl.ascx" tagname="CalendarUserControl" tagprefix="uc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>User Control Example: how to create and use User Control in asp.net</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h1 style="color:Red;">This is page top</h1>
<hr />
<uc1:CalendarUserControl ID="CalendarUserControl1" runat="server" />
</div>
</form>
</body>
</html>
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