Detecting concurrency errors after updating data (C#) : SqlDataSource « ADO.net Database « ASP.Net

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ASP.Net » ADO.net Database » SqlDataSource 
Detecting concurrency errors after updating data (C#)

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
protected void SqlDataSource1_Updated(object sender, SqlDataSourceStatusEventArgs e)
{
    if (e.AffectedRows > 0)
        Message.Text = "The record has been updated";
    else
        Message.Text = "Possible concurrency violation";
}
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:SqlDataSource ID="SqlDataSource1" 
                           Runat="server" 
                           SelectCommand="SELECT * FROM [Customers] WHERE ([CustomerID] = @CustomerID)"
                           ConnectionString="<%$ ConnectionStrings:AppConnectionString1 %>"
                           DataSourceMode="DataSet"
                           ConflictDetection="CompareAllValues" 
                           OnUpdated="SqlDataSource1_Updated">
            <SelectParameters>
                <asp:QueryStringParameter Name="CustomerID" 
                                          QueryStringField="id" 
                                          Type="String">
                </asp:QueryStringParameter>
            </SelectParameters>
        </asp:SqlDataSource>
        <asp:Label ID="Message" runat="server" Text="Label"></asp:Label>
    </div>
    </form>
</body>
</html>

 
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13. Programmatically Executing SqlDataSource Commands
14. Executing Insert, Update, and Delete Commands
15. Executing Select Commands
16. SqlDataSource with select command
17. Adding the ConflictDetection property to a SqlDataSource control
18. Detecting concurrency errors after updating data (VB)
19. Adding an InsertCommand to the SqlDataSource control
20. Filtering SqlDataSource data with a FilterExpression
21. Adding delete functionality to the SqlDataSource Control
22. Adding a section to the SqlDataSource control
23. Adding an UpdateCommand to a SqlDataSource control
24. Adding UpdateParameters to the SqlDataSource control
25. Adding the AutoGenerateEditButton attribute to a SqlDataSource control
26. Executing a Stored Procedure using SqlDataSource Control
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28. Renaming Parameters passed to a Stored Procedure by handling the SqlDataSource Events
29. Deletion using SqlDataSource Control
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