Mega Code Archive
Canceling Command Execution when Deleting, Filtering, Inserting, Selecting, Updating
<![CDATA[
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
protected void srcProducts_Updating(object sender, SqlDataSourceCommandEventArgs e)
{
foreach (SqlParameter param in e.Command.Parameters)
if (param.Value == null)
{
e.Cancel = true;
lblError.Text = "All fields are required!";
}
}
</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:DetailsView
id="dtlProduct"
DataSourceID="srcProducts"
DataKeyNames="Id"
AllowPaging="true"
AutoGenerateEditButton="true"
Runat="server" />
<asp:SqlDataSource
id="srcProducts"
SelectCommand="SELECT * FROM Products"
UpdateCommand="UPDATE Products SET Title=@Title,Director=@Director,DateReleased=@DateReleased WHERE Id=@id"
ConnectionString="<%$ ConnectionStrings:Products %>"
Runat="server"
OnUpdating="srcProducts_Updating" />
</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>
]]>