次の方法で共有

DetailsViewRowCollection.Item[Int32] プロパティ

  • リファレンス

定義

名前空間:
System.Web.UI.WebControls
アセンブリ:
System.Web.dll

指定したインデックスにある DetailsViewRow オブジェクトをコレクションから取得します。

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

パラメーター

index
Int32

コレクションから取得する DetailsViewRow のインデックス。

プロパティ値

DetailsViewRow

コレクション内の指定したインデックス位置の DetailsViewRow。

例

次のコード例では、インデクサーを使用して、特定のインデックスにあるコレクションからオブジェクトを取得 DetailsViewRow する方法を示します。


<%@ 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>

注釈

配列表記を使用して、指定したインデックス位置にあるコレクションからオブジェクトを取得 DetailsViewRow するには、このインデクサーを使用します。

適用対象

こちらもご覧ください