Handling Concurrency Issues: CompareAllValues or OverwriteChanges : DetailsView « ADO.net Database « ASP.Net

Home
ASP.Net
1.ADO.net Database
2.Ajax
3.Asp Control
4.Collections
5.Components
6.Data Binding
7.Development
8.File Directory
9.HTML Control
10.Language Basics
11.Login Security
12.Mobile Control
13.Network
14.Page
15.Request
16.Response
17.Server
18.Session Cookie
19.Sitemap
20.Theme Style
21.User Control and Master Page
22.Validation by Control
23.Validation by Function
24.WebPart
25.WPF
26.XML
ASP.Net » ADO.net Database » DetailsView 
Handling Concurrency Issues: CompareAllValues or OverwriteChanges


<%@ 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_Updated(object sender, SqlDataSourceStatusEventArgs e)
    {
        if (e.AffectedRows == 0)
            lblMessage.Text = "Could not update record";
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Concurrency</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <asp:Label ID="lblMessage" EnableViewState="false" runat="server" />

    <asp:DetailsView
        id="dtlProducts"
        DataKeyNames="Id"
        AutoGenerateEditButton="true"
        AllowPaging="true"
        DataSourceID="srcProducts"
        Runat="server" />

    <asp:SqlDataSource
        id="srcProducts"
        ConnectionString="<%$ ConnectionStrings:Products %>"
        SelectCommand="SELECT Id,Title,Director,InStocks FROM Products"
        UpdateCommand="UPDATE Products
            SET Title=@Title,Director=@Director,InStocks=
            WHERE Title=@original_Title
            AND Director=@original_Director
            AND InStocks=@InStocks
            AND Id=@original_Id"
        ConflictDetection="CompareAllValues"
        OldValuesParameterFormatString="original_{0}"
        Runat="server" OnUpdated="srcProducts_Updated" />

    </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>

 
Related examples in the same category
1.Link DetailsView with SqlDataSource and do the editing
2.Using a PagerTemplate to customize the paging interface.
3.Editing a record with the DetailsView control.
4.Displaying a Master/Detail form with the DetailsView control.
5.Using a template when editing with the DetailsView control.
6.Inserting Data with the DetailsView Control
7.Deleting Data with the DetailsView Control
8.Use the ItemInserted event to handle any errors
9.Adding an AutoGenerateInsertButton attribute to the DetailsView
10.Using the GridView and DetailsView together
11.Enabling paging on the DetailsView control
12.Customizing the display of the DetailsView control
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.