DetailsViewInsertEventArgs.Values Özellik

  • Başvuru

Tanım

Ad Alanı:
System.Web.UI.WebControls
Bütünleştirilmiş Kod:
System.Web.dll

Eklenecek kaydın alan adı/değer çiftlerini içeren bir sözlük alır.

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

Özellik Değeri

IOrderedDictionary

IOrderedDictionary Eklenecek kayıt için anahtar alanı adı/değer çiftleri sözlüğü içeren bir.

Örnekler

Aşağıdaki kod örneği, eklenen kayıt için alanların değerlerine erişmek için özelliğinin nasıl kullanılacağını Values gösterir.


<%@ 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_ItemInserting(Object sender, 
    DetailsViewInsertEventArgs e)
  {
    // Use the Values property to retrieve the key field value.
    String keyValue = e.Values["CustomerID"].ToString();

    // Insert the record only if the key field is four characters
    // long; otherwise, cancel the insert operation.
    if (keyValue.Length == 4)
    {
      // Change the key field value to upper case before inserting 
      // the record in the data source.
      e.Values["CustomerID"] = keyValue.ToUpper();

      MessageLabel.Text = "";
    }
    else
    {
      MessageLabel.Text = "The key field must have four digits.";
      e.Cancel = true;
    }

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsViewInsertEventArgs Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>DetailsViewInsertEventArgs Example</h3>
                
        <asp:detailsview id="CustomerDetailsView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogenerateinsertbutton="true"  
          autogeneraterows="true"
          allowpaging="true"
          oniteminserting="CustomerDetailsView_ItemInserting" 
          runat="server">
               
          <fieldheaderstyle backcolor="Navy"
            forecolor="White"/>
                    
        </asp:detailsview>
        
        <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]"
          insertcommand="INSERT INTO [Customers]([CustomerID], 
            [CompanyName], [Address], [City], [PostalCode], 
            [Country]) VALUES (@CustomerID, @CompanyName, @Address, 
            @City, @PostalCode, @Country)"
          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_ItemInserting(ByVal sender As Object, _
    ByVal e As DetailsViewInsertEventArgs) _
    Handles CustomerDetailsView.ItemInserting
  
    ' Use the Values property to retrieve the key field value.
    Dim keyValue As String = e.Values("CustomerID").ToString()

    ' Insert the record only if the key field is four characters
    ' long; otherwise, cancel the insert operation.
    If keyValue.Length = 4 Then
    
      ' Change the key field value to upper case before inserting 
      ' the record in the data source.
      e.Values("CustomerID") = keyValue.ToUpper()
      
      MessageLabel.Text = ""
    
    Else
    
      MessageLabel.Text = "The key field must have four digits."
      e.Cancel = True
    
    End If

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsViewInsertEventArgs Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>DetailsViewInsertEventArgs Example</h3>
                
        <asp:detailsview id="CustomerDetailsView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogenerateinsertbutton="true"  
          autogeneraterows="true"
          allowpaging="true"
          oniteminserting="CustomerDetailsView_ItemInserting" 
          runat="server">
               
          <fieldheaderstyle backcolor="Navy"
            forecolor="White"/>
                    
        </asp:detailsview>
        
        <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]"
          insertcommand="INSERT INTO [Customers]([CustomerID], 
            [CompanyName], [Address], [City], [PostalCode], 
            [Country]) VALUES (@CustomerID, @CompanyName, @Address, 
            @City, @PostalCode, @Country)"
          connectionstring=
          "<%$ ConnectionStrings:NorthWindConnectionString%>" 
          runat="server"/>
            
      </form>
  </body>
</html>

Açıklamalar

Values Eklenecek kaydın alanlarının değerlerine erişmek için özelliğini kullanın. Örneğin, veri kaynağına eklemeden önce kaydın değerlerini HTML ile kodlayabilirsiniz.

Values özelliği, arabirimini uygulayan IOrderedDictionary bir nesnesi döndürür. nesnesi, kaydın alanlarını temsil eden nesneler içerir DictionaryEntry .

Not

Kısayol olarak, alan değerlerine doğrudan erişmek için nesnenin IOrderedDictionary dizin oluşturucusunu da kullanabilirsiniz.

Şunlara uygulanır

Ayrıca bkz.