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You can handle errors thrown by the SqlDataSource control by handling any or all of
the following four events: Deleted, Inserted, Selected, Updated
Each of these events is passed an EventArgs parameter that includes any exceptions raised
when the command was executed.
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
protected void srcProducts_Selected(object sender, SqlDataSourceStatusEventArgs e)
{
if (e.Exception != null)
{
lblError.Text = e.Exception.Message;
e.ExceptionHandled = true;
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
<form id="form1" runat="server">
<div>
<asp:Label
id="lblError"
EnableViewState="false"
CssClass="error"
Runat="server" />
<asp:GridView
id="grdProducts"
DataSourceID="srcProducts"
Runat="server" />
<asp:SqlDataSource
id="srcProducts"
SelectCommand="SELECT * FROM DontExist"
ConnectionString="<%$ ConnectionStrings:Products %>"
OnSelected="srcProducts_Selected"
Runat="server" />
</div>
</form>
</body>
</html>
File: Web.config
<configuration>
<connectionStrings>
<add name="Products"
connectionString="Data Source=.\SQLEXPRESS;
AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
</connectionStrings>
</configuration>
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