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DetailsViewModeEventArgs.NewMode Eigenschaft

Definition

Ruft den Modus ab, in den das DetailsView-Steuerelement wechselt, bzw. legt diesen Modus fest.

public:
 property System::Web::UI::WebControls::DetailsViewMode NewMode { System::Web::UI::WebControls::DetailsViewMode get(); void set(System::Web::UI::WebControls::DetailsViewMode value); };
public System.Web.UI.WebControls.DetailsViewMode NewMode { get; set; }
member this.NewMode : System.Web.UI.WebControls.DetailsViewMode with get, set
Public Property NewMode As DetailsViewMode

Eigenschaftswert

DetailsViewMode

Einer der DetailsViewMode-Enumerationswerte.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie Sie die NewMode Eigenschaft verwenden, um den Modus zu bestimmen, zu dem das DetailsView Steuerelement übergibt.


<%@ 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 CustomerDetailsView_ModeChanging(Object sender, DetailsViewModeEventArgs e)
  {

    // Use the NewMode property to determine the mode to which the 
    // DetailsView control is transitioning.
    switch (e.NewMode)
    {
      case DetailsViewMode.Edit:
        // Hide the pager row and clear the Label control
        // when transitioning to edit mode.
        CustomerDetailsView.AllowPaging = false;
        MessageLabel.Text = "";
        break;
      case DetailsViewMode.ReadOnly:
        // Display the pager row and confirmation message
        // when transitioning to edit mode.
        CustomerDetailsView.AllowPaging = true;
        if (e.CancelingEdit)
        {
          MessageLabel.Text = "Update canceled.";
        }
        else
        {
          MessageLabel.Text = "Update completed.";
        }
        break;
      case DetailsViewMode.Insert:
        // Cancel the mode change if the DetailsView
        // control attempts to transition to insert 
        // mode.
        e.Cancel = true;
        break;
      default:
        MessageLabel.Text = "Unsupported mode.";
        break;
    }
    
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsViewModeEventArgs Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>DetailsViewModeEventArgs Example</h3>
                
      <asp:detailsview id="CustomerDetailsView"
        datasourceid="DetailsViewSource"
        datakeynames="CustomerID"
        autogeneraterows="true"
        autogenerateeditbutton="true" 
        allowpaging="true"
        onmodechanging="CustomerDetailsView_ModeChanging" 
        runat="server">

      </asp:detailsview>
      
      <br/><br/>
      
      <asp:label id="MessageLabel"
        forecolor="Red"
        runat="server"/>
          
      <!-- 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"
        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" 
        connectionstring=
          "<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>
            
    </form>
  </body>
</html>

<%@ Page language="VB" autoeventwireup="false" %>

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

  Sub CustomerDetailsView_ModeChanging(ByVal sender As Object, ByVal e As DetailsViewModeEventArgs) Handles CustomerDetailsView.ModeChanging

    ' Use the NewMode property to determine the mode to which the 
    ' DetailsView control is transitioning.
    Select Case e.NewMode
    
      Case DetailsViewMode.Edit
        ' Hide the pager row and clear the Label control
        ' when transitioning to edit mode.
        CustomerDetailsView.AllowPaging = False
        MessageLabel.Text = ""

      Case DetailsViewMode.ReadOnly
        ' Display the pager row and confirmation message
        ' when transitioning to edit mode.
        CustomerDetailsView.AllowPaging = True
        If e.CancelingEdit Then
        
          MessageLabel.Text = "Update canceled."
        
        Else
        
          MessageLabel.Text = "Update completed."
        
        End If

      Case DetailsViewMode.Insert
        ' Cancel the mode change if the DetailsView
        ' control attempts to transition to insert 
        ' mode.
        e.Cancel = True

      Case Else
        MessageLabel.Text = "Unsupported mode."
          
    End Select
    
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsViewModeEventArgs Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>DetailsViewModeEventArgs Example</h3>
                
      <asp:detailsview id="CustomerDetailsView"
        datasourceid="DetailsViewSource"
        datakeynames="CustomerID"
        autogeneraterows="true"
        autogenerateeditbutton="true" 
        allowpaging="true"
        runat="server">

      </asp:detailsview>
      
      <br/><br/>
      
      <asp:label id="MessageLabel"
        forecolor="Red"
        runat="server"/>
          
      <!-- 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"
        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" 
        connectionstring=
          "<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>
            
    </form>
  </body>
</html>

Hinweise

Verwenden Sie die NewMode Eigenschaft, um den Modus zu bestimmen, in dem das DetailsView Steuerelement geändert wird. Sie können beispielsweise das DetailsView Steuerelement basierend auf dem Modus konfigurieren, auf dem sie geändert wird. Sie können diese Eigenschaft auch verwenden, um den Modus anzugeben, auf den sich das DetailsView Steuerelement ändert, indem Sie sie auf einen der DetailsViewMode Enumerationswerte festlegen.

Gilt für

Siehe auch