共用方式為

DetailsView.DataKeyNames 屬性

  • 參考

定義

命名空間:
System.Web.UI.WebControls
組件:
System.Web.dll

取得或設定陣列，陣列中包含資料來源的索引鍵欄位名稱。

public:
 virtual property cli::array <System::String ^> ^ DataKeyNames { cli::array <System::String ^> ^ get(); void set(cli::array <System::String ^> ^ value); };
[System.ComponentModel.TypeConverter(typeof(System.Web.UI.WebControls.StringArrayConverter))]
public virtual string[] DataKeyNames { get; set; }
[<System.ComponentModel.TypeConverter(typeof(System.Web.UI.WebControls.StringArrayConverter))>]
member this.DataKeyNames : string[] with get, set
Public Overridable Property DataKeyNames As String()

屬性值

String[]

陣列，包含資料來源的索引鍵欄位名稱。

屬性
TypeConverterAttribute

範例

下列程式碼範例示範如何使用 DataKeyNames 屬性來識別系結至 控制項之資料來源的 DetailsView 索引鍵欄位。


<%@ Page language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsView AutoGenerateDeleteButton Example</title>
</head>
<body>
    <form id="Form1" runat="server">
        
      <h3>DetailsView AutoGenerateDeleteButton Example</h3>
                
        <asp:detailsview id="CustomersDetailView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogeneratedeletebutton="true"  
          autogeneraterows="true"
          allowpaging="true"  
          runat="server">
               
          <headerstyle 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]">
        </asp:SqlDataSource>
    </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">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsView AutoGenerateDeleteButton Example</title>
</head>
<body>
    <form id="Form1" runat="server">
        
      <h3>DetailsView AutoGenerateDeleteButton Example</h3>
                
        <asp:detailsview id="CustomersDetailView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogeneratedeletebutton="true"  
          autogeneraterows="true"
          allowpaging="true"  
          runat="server">
               
          <headerstyle 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]">
        </asp:SqlDataSource>
    </form>
  </body>
</html>

備註

DataKeyNames使用 屬性可指定以逗號分隔的功能變數名稱清單，代表資料來源的主鍵。 DataKeyNames設定屬性時， DetailsView 控制項會自動建立 DataKey 物件，代表目前記錄的索引鍵欄位或欄位，並將它儲存在 屬性中 DataKey 。 AutoGenerateColumns當 屬性也設定為 true 時， DetailsView 控制項會自動確保屬性中指定的 DataKeyNames 欄位或欄位是唯讀的。

注意

您必須設定 DataKeyNames 控制項的 DetailsView 自動更新、刪除和插入功能的屬性才能運作。

Visible如果資料欄欄位的 屬性設定 false 為 ，則資料列不會顯示在 控制項中 DetailsView ，而且資料列的資料不會往返用戶端。 如果您想要不可見的資料列進行來回行程，請將功能變數名稱新增至 DataKeyNames 屬性。

適用於

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