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SelectedValue Property

DetailsView.SelectedValue Property

Gets the data key value of the current record in a DetailsView control.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

public Object SelectedValue { get; }
/** @property */
public Object get_SelectedValue ()

public function get SelectedValue () : Object

Not applicable.

Property Value

The data key value of the current record in a DetailsView control.

Use the SelectedValue property to determine the data key value for the current record. To retrieve the actual System.Web.UI.WebControls.DataKey object that represents the data key for the record, use the DataKey property.

This property is the default property that a ControlParameter object binds to at run time. For more information, see ControlValuePropertyAttribute, ControlParameter, and ASP.NET Data Source Control Parameters.

The following code example demonstrates how to use the SelectedValue property to determine the data key value for the current record.


<%@ 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">

    void CustomerDetailView_ItemUpdated(Object sender, DetailsViewUpdatedEventArgs e)
  {
    // Log the update operation using the key value contained
    // in the SelectedValue property.
      String keyValue = CustomerDetailView.SelectedValue.ToString();
    LogUpdate(keyValue);
  }

  void LogUpdate(String keyValue)
  {
    // Insert code to log the update operation.
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsView SelectedValue Example</title>
</head>
<body>
    <form id="Form1" runat="server">
        
      <h3>DetailsView SelectedValue Example</h3>
                
        <asp:detailsview id="CustomerDetailView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogeneraterows="true"
          autogenerateeditbutton="true" 
          allowpaging="true"
          onitemupdated="CustomerDetailView_ItemUpdated" 
          runat="server">
               
          <fieldheaderstyle backcolor="Navy"
            forecolor="White"/>
                    
        </asp:detailsview>
        
        <!-- This example uses Microsoft SQL Server and connects  -->
        <!-- to the Northwind sample database. Use an ASP.NET     -->
        <!-- expression to retrieve the connection string value   -->
        <!-- from the web.config file.                            -->
        <asp:SqlDataSource ID="DetailsViewSource" runat="server" 
          ConnectionString=
            "<%$ ConnectionStrings:NorthWindConnectionString%>"
            InsertCommand="INSERT INTO [Customers]([CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country]) VALUES (@CustomerID, @CompanyName, @Address, @City, @PostalCode, @Country)"
            SelectCommand="Select [CustomerID], [CompanyName], 
              [Address], [City], [PostalCode], [Country] 
              From [Customers]"
                        UpdateCommand="UPDATE [Customers] SET [CompanyName] = @CompanyName, 
            [Address] = @Address, [City] = @City,
            [PostalCode] = @PostalCode, [Country] = @Country
            WHERE [CustomerID] = @CustomerID">
        </asp:SqlDataSource>
    </form>
  </body>
</html>


Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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