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GridViewSortEventArgs 類別

定義

提供 Sorting 事件的資料。

public ref class GridViewSortEventArgs : System::ComponentModel::CancelEventArgs
public class GridViewSortEventArgs : System.ComponentModel.CancelEventArgs
type GridViewSortEventArgs = class
    inherit CancelEventArgs
Public Class GridViewSortEventArgs
Inherits CancelEventArgs
繼承
GridViewSortEventArgs

範例

下列範例示範如何使用 GridViewSortEventArgs 傳遞至事件處理方法的物件,在使用者嘗試排序 控制項中的 GridView 位址資料行時取消排序作業。


<%@ 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 CustomersGridView_Sorting(Object sender, GridViewSortEventArgs e)
  {
    // Cancel the sorting operation if the user attempts
    // to sort by address.
    if (e.SortExpression == "Address")
    {
      e.Cancel = true;
      Message.Text = "You cannot sort by address.";
      SortInformationLabel.Text = "";
    }
    else
    {
      Message.Text = "";
    }
  }

  void CustomersGridView_Sorted(Object sender, EventArgs e)
  {
    // Display the sort expression and sort direction.
    SortInformationLabel.Text = "Sorting by " +
      CustomersGridView.SortExpression.ToString() +
      " in " + CustomersGridView.SortDirection.ToString() +
      " order.";
  }
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView Sorting Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView Sorting Example</h3>

      <asp:label id="Message"
        forecolor="Red"
        runat="server"/>
        
      <br/>
        
      <asp:label id="SortInformationLabel"
        forecolor="Navy"
        runat="server"/>
                
      <br/>  

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSource" 
        autogeneratecolumns="true"
        allowpaging="true"
        emptydatatext="No data available." 
        allowsorting="true"
        onsorting="CustomersGridView_Sorting"
        onsorted="CustomersGridView_Sorted"  
        runat="server">
                
      </asp:gridview>
            
      <!-- 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="CustomersSource"
        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 CustomersGridView_Sorting(sender As Object, e As GridViewSortEventArgs)
  
    ' Cancel the sorting operation if the user attempts
    ' to sort by address.
    If e.SortExpression = "Address" Then
    
      e.Cancel = True
      Message.Text = "You cannot sort by address."
      SortInformationLabel.Text = ""
    
    Else
    
      Message.Text = ""
      
    End If
    
  End Sub

  Sub CustomersGridView_Sorted(ByVal sender As Object, ByVal e As EventArgs)
 
    ' Display the sort expression and sort direction.
    SortInformationLabel.Text = "Sorting by " & _
      CustomersGridView.SortExpression.ToString() & _
      " in " & CustomersGridView.SortDirection.ToString() & _
      " order."
    
  End Sub
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView Sorted and Sorting Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView Sorted and Sorting Example</h3>

      <asp:label id="Message"
        forecolor="Red"
        runat="server"/>
        
      <br/>
        
      <asp:label id="SortInformationLabel"
        forecolor="Navy"
        runat="server"/>
                
      <br/>  

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSource" 
        autogeneratecolumns="true"
        allowpaging="true"
        emptydatatext="No data available." 
        allowsorting="true"
        onsorting="CustomersGridView_Sorting"
        onsorted="CustomersGridView_Sorted"  
        runat="server">
                
      </asp:gridview>
            
      <!-- 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="CustomersSource"
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>
        
    </form>
  </body>
</html>

備註

GridView當按一下 [排序] 按鈕 (按鈕 CommandName 的屬性設定為 「Sort」) ,但在控制項處理排序作業之前 GridView ,控制項就會引發 Sorting 事件。 這可讓您提供執行自訂常式的事件處理方法,例如每當發生此事件時取消排序作業。

注意

雖然控制項內 GridView 的任何按鈕其 CommandName 屬性設定為 「Sort」 都會引發 Sorting 事件,但 [排序] 按鈕通常會出現在控制項的 GridView 標題列中。

GridViewSortEventArgs物件會傳遞至事件處理方法,可讓您指定要排序控制項的排序運算式和排序方向 GridView 。 若要判斷排序運算式,請使用 SortExpression 屬性。 若要判斷排序方向,請使用 SortDirection 屬性。 您也可以將 屬性設定 Canceltrue 來取消排序作業。

如需如何處理事件的詳細資訊,請參閱 處理和引發事件

如需 實例 GridViewSortEventArgs 的初始屬性值清單,請參閱 建 GridViewSelectEventArgs 構函式。

建構函式

GridViewSortEventArgs(String, SortDirection)

初始化 GridViewSortEventArgs 類別的新執行個體。

屬性

Cancel

取得或設定值,這個值表示是否應該取消事件。

(繼承來源 CancelEventArgs)
SortDirection

取得或設定排序 GridView 控制項的排序方向。

SortExpression

取得或設定運算式,用來排序 GridView 控制項中的項目。

方法

Equals(Object)

判斷指定的物件是否等於目前的物件。

(繼承來源 Object)
GetHashCode()

做為預設雜湊函式。

(繼承來源 Object)
GetType()

取得目前執行個體的 Type

(繼承來源 Object)
MemberwiseClone()

建立目前 Object 的淺層複製。

(繼承來源 Object)
ToString()

傳回代表目前物件的字串。

(繼承來源 Object)

適用於

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