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DataKey.Values Properti

Definisi

Ruang nama:
System.Web.UI.WebControls
Rakitan:
System.Web.dll

IOrderedDictionary Mendapatkan objek yang berisi setiap bidang kunci dalam DataKey objek.

public:
 virtual property System::Collections::Specialized::IOrderedDictionary ^ Values { System::Collections::Specialized::IOrderedDictionary ^ get(); };
public virtual System.Collections.Specialized.IOrderedDictionary Values { get; }
member this.Values : System.Collections.Specialized.IOrderedDictionary
Public Overridable ReadOnly Property Values As IOrderedDictionary

Nilai Properti

IOrderedDictionary

Yang IOrderedDictionary berisi setiap bidang kunci di DataKey.

Contoh

Contoh kode berikut menunjukkan cara melakukan iterasi melalui objek yang IOrderedDictionary dikembalikan oleh Values properti .


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

    // Retrieve the IOrderedDictionary object that contains the key field values.
    IOrderedDictionary allKeysDictionary = CustomerDetailsView.DataKey.Values;

    // Display the value of the key fields.
    MessageLabel.Text = "The key field values for the displayed record are: <br/><br/>";

    foreach (DictionaryEntry entry in allKeysDictionary)
    {
      MessageLabel.Text += "Key=" + entry.Key.ToString() + 
        ", Value=" + entry.Value.ToString() + "<br/>";
    }

  }
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >

  <head runat="server">
    <title>DataKey Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>DataKey Example</h3>
                       
        <asp:detailsview id="CustomerDetailsView"
          datasourceid="DetailsViewSource"
          autogeneraterows="true"
          datakeynames="CustomerID, CompanyName, PostalCode"  
          allowpaging="true"
          ondatabound="CustomerDetailsView_DataBound" 
          runat="server">
            
        </asp:detailsview>
        
        <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 CustomerDetailsView_DataBound(ByVal sender As Object, ByVal e As EventArgs) Handles CustomerDetailsView.DataBound
    
    ' Retrieve the IOrderedDictionary object that contains the key field values.
    Dim allKeysDictionary As IOrderedDictionary = CustomerDetailsView.DataKey.Values

    ' Display the value of the key fields.
    MessageLabel.Text = "The key field values for the displayed record are: <br/><br/>"

    ' In Visual Basic, the DictionaryEntry objects contained in the 
    ' allKeysDictionary object must be copied to an array before
    ' you can iterate through the items.
    Dim allKeysArray(allKeysDictionary.Count - 1) As DictionaryEntry
    allKeysDictionary.CopyTo(allKeysArray, 0)
    
    Dim entry As DictionaryEntry
    For Each entry In allKeysArray
     
      MessageLabel.Text &= "Key=" & entry.Key.ToString() & _
          ", Value=" & entry.Value.ToString() & "<br/>"
    
    Next

  End Sub
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >

  <head runat="server">
    <title>DataKey Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>DataKey Example</h3>
                       
        <asp:detailsview id="CustomerDetailsView"
          datasourceid="DetailsViewSource"
          autogeneraterows="true"
          datakeynames="CustomerID, CompanyName, PostalCode"  
          allowpaging="true"
          runat="server">
            
        </asp:detailsview>
        
        <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>

Keterangan

Values Gunakan properti untuk mengambil IOrderedDictionary objek yang berisi setiap bidang kunci dalam DataKey objek. Objek IOrderedDictionary sering digunakan untuk melakukan iterasi melalui bidang kunci rekaman.

Berlaku untuk

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