ASP.NET

MyUserControl MyUserControl1

<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" Title="Title" %>
<script runat="server">
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        If Search_Box.Text <> "" Then
            Display_Text.Text = Search_Box.Text
        End If
    End Sub
</script>
<asp:Content ID="Content1" ContentPlaceHolderID="Main" Runat="Server">
    <asp:Label ID="Search_Text" runat="server" Text="Search:" />
    <asp:TextBox ID="Search_Box" runat="server" />
    <asp:Button ID="Search_Button" runat="server" Text="Search" /><br />
    <asp:Label ID="Display_Text" runat="server" Text="" />
</asp:Content>

The formatting string can be any literal string and usually includes a placeholder for the field's value. For example, in the formatting string "Item Value: {0}", the field's value is substituted for the {0} placeholder when the string is displayed in the BoundField object. The rest of the formatting string is displayed as literal text.

The placeholder consists of two parts, separated by a colon and wrapped in braces, in the form {A : Bxx}. The value before the colon (A in the general example) specifies the field value's index in a zero-based list of parameters.