DetailsViewRowCollection.Item[Int32] Eigenschaft

  • Referenz

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Ruft das DetailsViewRow-Objekt am angegebenen Index aus der Auflistung ab.

public:
 property System::Web::UI::WebControls::DetailsViewRow ^ default[int] { System::Web::UI::WebControls::DetailsViewRow ^ get(int index); };
public System.Web.UI.WebControls.DetailsViewRow this[int index] { get; }
member this.Item(int) : System.Web.UI.WebControls.DetailsViewRow
Default Public ReadOnly Property Item(index As Integer) As DetailsViewRow

Parameter

index
Int32

Der Index des DetailsViewRow, der aus der Auflistung abgerufen werden soll.

Eigenschaftswert

DetailsViewRow

Die DetailsViewRow am angegebenen Index in der Auflistung.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie Sie mit dem Indexer ein DetailsViewRow Objekt aus der Auflistung an einem bestimmten Index abrufen.


<%@ 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 SubmitButton_Click(Object sender, EventArgs e)
  {

    // Use the Count property to determine whether the
    // Rows collection contains any item.
    if (ItemDetailsView.Rows.Count > 0)
    {
      // Display the field value in the first data row.
     
      // Use the indexer to get the first data row 
      // (index 0) from the Rows collection.
      DetailsViewRow row = ItemDetailsView.Rows[0];

      MessageLabel.Text = "The field value for the first row is: <br/><br/>";

      // Use the Text property to access the value of 
      // each cell. In this example, the cells in the 
      // first column (index 0) contains the field names, 
      // while the cells in the second column (index 1)
      // contains the field value. 
      MessageLabel.Text += row.Cells[0].Text + " = " +
        row.Cells[1].Text + "<br/>";
    }
    else
    {
      MessageLabel.Text = "No items.";
    }

  }
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsViewRowCollection Indexer Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>DetailsViewRowCollection Indexer Example</h3>
  
      <asp:detailsview id="ItemDetailsView"
        datasourceid="DetailsViewSource"
        allowpaging="true"
        autogeneraterows="false" 
        runat="server">
        <fields>
          <asp:boundfield datafield="CustomerID"
            headertext="Customer ID"/>
          <asp:boundfield datafield="CompanyName"
            headertext="Company Name"/>
          <asp:boundfield datafield="Address"
            headertext="Address"/>
          <asp:boundfield datafield="City"
            headertext="City"/>
          <asp:boundfield datafield="PostalCode"
            headertext="ZIP Code"/>
          <asp:boundfield datafield="Country"
            headertext="Country"/>
        </fields>
      </asp:detailsview>
      
      <br/>
      
      <asp:button id="SubmitButton" 
        text="Display Value"
        onclick="SubmitButton_Click"
        runat="server"/>
        
      <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]"
        connectionstring=
          "<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>  
  
    </form>
  </body>
</html>


<%@ page language="VB" %>

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

  Sub SubmitButton_Click(ByVal sender As Object, ByVal e As EventArgs)

    ' Use the Count property to determine whether the
    ' Rows collection contains any item.
    If ItemDetailsView.Rows.Count > 0 Then
    
      ' Display the field value in the first data row.
     
      ' Use the indexer to get the first data row 
      ' (index 0) from the Rows collection.
      Dim row As DetailsViewRow = ItemDetailsView.Rows(0)

      MessageLabel.Text = "The field value for the first row is: <br/><br/>"

      ' Use the Text property to access the value of 
      ' each cell. In this example, the cells in the 
      ' first column (index 0) contains the field names, 
      ' while the cells in the second column (index 1)
      ' contains the field value. 
      MessageLabel.Text &= row.Cells(0).Text & " = " & _
        row.Cells(1).Text & "<br/>"
    
    Else
    
      MessageLabel.Text = "No items."
    
    End If

  End Sub
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsViewRowCollection Indexer Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>DetailsViewRowCollection Indexer Example</h3>
  
      <asp:detailsview id="ItemDetailsView"
        datasourceid="DetailsViewSource"
        allowpaging="true"
        autogeneraterows="false" 
        runat="server">
        <fields>
          <asp:boundfield datafield="CustomerID"
            headertext="Customer ID"/>
          <asp:boundfield datafield="CompanyName"
            headertext="Company Name"/>
          <asp:boundfield datafield="Address"
            headertext="Address"/>
          <asp:boundfield datafield="City"
            headertext="City"/>
          <asp:boundfield datafield="PostalCode"
            headertext="ZIP Code"/>
          <asp:boundfield datafield="Country"
            headertext="Country"/>
        </fields>
      </asp:detailsview>
      
      <br/>
      
      <asp:button id="SubmitButton" 
        text="Display Value"
        onclick="SubmitButton_Click"
        runat="server"/>
        
      <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]"
        connectionstring=
          "<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>  
  
    </form>
  </body>
</html>

Hinweise

Verwenden Sie diesen Indexer, um ein DetailsViewRow Objekt aus der Auflistung am angegebenen Index mithilfe der Arraynotation abzurufen.

Gilt für:

Weitere Informationen