ListView.ItemUpdated 이벤트

정의

업데이트 작업이 요청될 때 ListView 컨트롤에서 항목을 업데이트한 후 발생합니다.

public:
 event EventHandler<System::Web::UI::WebControls::ListViewUpdatedEventArgs ^> ^ ItemUpdated;
public event EventHandler<System.Web.UI.WebControls.ListViewUpdatedEventArgs> ItemUpdated;
member this.ItemUpdated : EventHandler<System.Web.UI.WebControls.ListViewUpdatedEventArgs> 
Public Custom Event ItemUpdated As EventHandler(Of ListViewUpdatedEventArgs) 

이벤트 유형

예제

다음 예제에서는 이벤트에 대 한 이벤트 처리기를 추가 하는 방법을 보여 입니다 ItemUpdated .

중요

이 예제에는 사용자 입력을 허용하는 텍스트 상자가 있으므로 보안상 위험할 수 있습니다. 기본적으로 ASP.NET 웹 페이지는 사용자 입력 내용에 스크립트 또는 HTML 요소가 포함되어 있지 않은지 확인합니다. 자세한 내용은 Script Exploits Overview를 참조하세요.

<%@ 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 Page_Load()
    {
        Message.Text = String.Empty;
    }
        
    //<Snippet2>
    void ContactsListView_ItemUpdated(Object sender, ListViewUpdatedEventArgs e)
    {
        if (e.Exception != null)
        {
            if (e.AffectedRows == 0)
            {
                e.KeepInEditMode = true;
                Message.Text = "An exception occurred updating the contact. " +
                                    "Please verify your values and try again.";
            }
            else
                Message.Text = "An exception occurred updating the contact. " +
                                    "Please verify the values in the recently updated item.";

            e.ExceptionHandled = true;
        }
    }
   //</Snippet2>
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>ListView.ItemUpdated Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>ListView.ItemUpdated Example</h3>
            
      <asp:Label ID="Message"
        ForeColor="Red"          
        runat="server"/>
      <br/>

      <asp:ListView ID="ContactsListView" 
        DataSourceID="ContactsDataSource" 
        DataKeyNames="ContactID"
        OnItemUpdated="ContactsListView_ItemUpdated"  
        runat="server">
        <LayoutTemplate>
          <table cellpadding="2" border="1" runat="server" id="tblContacts" width="640px">
            <tr runat="server" id="itemPlaceholder" />
          </table>
          <asp:DataPager runat="server" ID="PeopleDataPager" PageSize="12">
             <Fields>
               <asp:NextPreviousPagerField 
                ShowFirstPageButton="True" ShowLastPageButton="True"
                    FirstPageText="|&lt;&lt; " LastPageText=" &gt;&gt;|"
                    NextPageText=" &gt; " PreviousPageText=" &lt; " />
             </Fields>
           </asp:DataPager>
         </LayoutTemplate>
         <ItemTemplate>
            <tr runat="server">
              <td valign="top">
                <asp:Label ID="FirstNameLabel" runat="server" Text='<%#Eval("FirstName") %>' />
                <asp:Label ID="LastNameLabel" runat="server" Text='<%#Eval("LastName") %>' />
              </td>
              <td>
                <asp:Label ID="EmailLabel" runat="server" Text='<%#Eval("EmailAddress") %>' />
              </td>
              <td>
                <asp:LinkButton ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
              </td>
            </tr>
          </ItemTemplate>
          <EditItemTemplate>
            <tr style="background-color:#ADD8E6">
              <td valign="top">
                <asp:Label runat="server" ID="FirstNameLabel" 
                  AssociatedControlID="FirstNameTextBox" Text="First Name"/>
                <asp:TextBox ID="FirstNameTextBox" runat="server"
                  Text='<%# Bind("FirstName") %>' MaxLength="50" Width="200px" /><br />
                <asp:Label runat="server" ID="LastNameLabel" 
                  AssociatedControlID="LastNameTextBox" Text="Last Name" />
                <asp:TextBox ID="LastNameTextBox" runat="server" 
                  Text='<%# Bind("LastName") %>' MaxLength="50" Width="200px" /><br />
                <asp:Label runat="server" ID="EmailLabel" 
                  AssociatedControlID="EmailTextBox" Text="Email" />
                <asp:TextBox ID="EmailTextBox" runat="server" 
                  Text='<%# Bind("EmailAddress") %>' MaxLength="50" Width="200px" />
              </td>
              <td colspan="2" valign="top">
                <asp:LinkButton ID="UpdateButton" runat="server" CommandName="Update" Text="Update" />
                <asp:LinkButton ID="CancelButton" runat="server" CommandName="Cancel" Text="Cancel" />
              </td>
            </tr>
          </EditItemTemplate>
      </asp:ListView>

      <!-- This example uses Microsoft SQL Server and connects      -->
      <!-- to the AdventureWorks sample database. Use an ASP.NET    -->
      <!-- expression to retrieve the connection string value       -->
      <!-- from the Web.config file.                                -->            
      <asp:SqlDataSource ID="ContactsDataSource" runat="server" 
        ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
        SelectCommand="SELECT [ContactID], [FirstName], [LastName], [EmailAddress] 
          FROM Person.Contact"
        UpdateCommand="UPDATE Person.Contact
          Set [FirstName] = @FirstName, [LastName] = @LastName, [EmailAddress] = @EmailAddress 
          WHERE [ContactID] = @ContactID">
      </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">
    
<script runat="server">

    Sub Page_Load()
        Message.Text = String.Empty
    End Sub

    '<Snippet2>
    Sub ContactsListView_ItemUpdated(sender As Object, e As ListViewUpdatedEventArgs)
        If e.Exception IsNot Nothing Then
            If e.AffectedRows = 0 Then
                e.KeepInEditMode = True
                Message.Text = "An exception occurred updating the contact. " & _
                                    "Please verify your values and try again."
            Else
                Message.Text = "An exception occurred updating the contact. " & _
                                    "Please verify the values in the recently updated item."
            End If

            e.ExceptionHandled = True
        End If
    End Sub
   '</Snippet2>
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>ListView.ItemUpdated Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>ListView.ItemUpdated Example</h3>
            
      <asp:Label ID="Message"
        ForeColor="Red"          
        runat="server"/>
      <br/>

      <asp:ListView ID="ContactsListView" 
        DataSourceID="ContactsDataSource" 
        DataKeyNames="ContactID"
        OnItemUpdated="ContactsListView_ItemUpdated"  
        runat="server">
        <LayoutTemplate>
          <table cellpadding="2" border="1" runat="server" id="tblContacts" width="640px">
            <tr runat="server" id="itemPlaceholder" />
          </table>
          <asp:DataPager runat="server" ID="PeopleDataPager" PageSize="12">
             <Fields>
               <asp:NextPreviousPagerField 
                ShowFirstPageButton="True" ShowLastPageButton="True"
                    FirstPageText="|&lt;&lt; " LastPageText=" &gt;&gt;|"
                    NextPageText=" &gt; " PreviousPageText=" &lt; " />
             </Fields>
           </asp:DataPager>
         </LayoutTemplate>
         <ItemTemplate>
            <tr>
              <td valign="top">
                <asp:Label ID="FirstNameLabel" runat="server" Text='<%#Eval("FirstName") %>' />
                <asp:Label ID="LastNameLabel" runat="server" Text='<%#Eval("LastName") %>' />
              </td>
              <td>
                <asp:Label ID="EmailLabel" runat="server" Text='<%#Eval("EmailAddress") %>' />
              </td>
              <td>
                <asp:LinkButton ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
              </td>
            </tr>
          </ItemTemplate>
          <EditItemTemplate>
            <tr style="background-color:#ADD8E6">
              <td valign="top">
                <asp:Label runat="server" ID="FirstNameLabel" 
                  AssociatedControlID="FirstNameTextBox" Text="First Name"/>
                <asp:TextBox ID="FirstNameTextBox" runat="server"
                  Text='<%# Bind("FirstName") %>' MaxLength="50" Width="200px" /><br />
                <asp:Label runat="server" ID="LastNameLabel" 
                  AssociatedControlID="LastNameTextBox" Text="Last Name" />
                <asp:TextBox ID="LastNameTextBox" runat="server" 
                  Text='<%# Bind("LastName") %>' MaxLength="50" Width="200px" /><br />
                <asp:Label runat="server" ID="EmailLabel" 
                  AssociatedControlID="EmailTextBox" Text="Email" />
                <asp:TextBox ID="EmailTextBox" runat="server" 
                  Text='<%# Bind("EmailAddress") %>' MaxLength="50" Width="200px" />
              </td>
              <td colspan="2" valign="top">
                <asp:LinkButton ID="UpdateButton" runat="server" CommandName="Update" Text="Update" />
                <asp:LinkButton ID="CancelButton" runat="server" CommandName="Cancel" Text="Cancel" />
              </td>
            </tr>
          </EditItemTemplate>
      </asp:ListView>

      <!-- This example uses Microsoft SQL Server and connects      -->
      <!-- to the AdventureWorks sample database. Use an ASP.NET    -->
      <!-- expression to retrieve the connection string value       -->
      <!-- from the Web.config file.                                -->            
      <asp:SqlDataSource ID="ContactsDataSource" runat="server" 
        ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
        SelectCommand="SELECT [ContactID], [FirstName], [LastName], [EmailAddress] 
          FROM Person.Contact"
        UpdateCommand="UPDATE Person.Contact
          Set [FirstName] = @FirstName, [LastName] = @LastName, [EmailAddress] = @EmailAddress 
          WHERE [ContactID] = @ContactID">
      </asp:SqlDataSource>
      
    </form>
  </body>
</html>

설명

ItemUpdated 이벤트는 컨트롤이 항목을 업데이트한 후 항목의 업데이트 단추를 클릭하거나 UpdateItem 메서드가 ListView 호출될 때 발생합니다. (업데이트 단추는 속성이 CommandName "업데이트"로 설정된 단추 컨트롤입니다.) 이렇게 하면 업데이트 작업의 결과를 확인하는 등 이 이벤트가 발생할 때마다 사용자 지정 루틴을 수행할 수 있습니다.

ListViewUpdatedEventArgs 개체가 이벤트 처리기에 전달되므로 영향을 받는 행 수를 확인할 수 있습니다. 또한 어떤 예외가 발생했는지 확인할 수 있습니다. 개체의 속성을 ListViewUpdatedEventArgs 설정하여 이벤트 처리기에서 예외가 ExceptionHandled 처리되었는지 여부를 나타낼 수 있습니다.

이벤트를 처리 하는 방법에 대 한 자세한 내용은 참조 하세요. 이벤트 처리 및 발생합니다.

적용 대상

추가 정보