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GridView.RowCommand 이벤트

정의

컨트롤에서 단추를 클릭할 때 발생합니다 GridView .

public:
 event System::Web::UI::WebControls::GridViewCommandEventHandler ^ RowCommand;
public event System.Web.UI.WebControls.GridViewCommandEventHandler RowCommand;
member this.RowCommand : System.Web.UI.WebControls.GridViewCommandEventHandler 
Public Custom Event RowCommand As GridViewCommandEventHandler 

이벤트 유형

예제

소스 코드가 있는 Visual Studio 웹 사이트 프로젝트는 다운로드 항목과 함께 사용할 수 있습니다.

다음 예제에서는 행의 추가 단추를 클릭할 때 컨트롤에서 GridView 컨트롤에 고객의 이름을 추가 하는 ListBox 이벤트를 사용 RowCommand 하는 방법을 보여 줍니다.


<%@ 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 ContactsGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
  {
    // If multiple buttons are used in a GridView control, use the
    // CommandName property to determine which button was clicked.
    if(e.CommandName=="Add")
    {
      // Convert the row index stored in the CommandArgument
      // property to an Integer.
      int index = Convert.ToInt32(e.CommandArgument);

      // Retrieve the row that contains the button clicked 
      // by the user from the Rows collection.
      GridViewRow row = ContactsGridView.Rows[index];

      // Create a new ListItem object for the contact in the row.     
      ListItem item = new ListItem();
      item.Text = Server.HtmlDecode(row.Cells[2].Text) + " " +
        Server.HtmlDecode(row.Cells[3].Text);

      // If the contact is not already in the ListBox, add the ListItem 
      // object to the Items collection of the ListBox control. 
      if (!ContactsListBox.Items.Contains(item))
      {
        ContactsListBox.Items.Add(item);
      }
    }
  }    
</script>

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

      <h3>GridView RowCommand Example</h3>

      <table width="100%">
        <tr>
          <td style="width:50%">

            <asp:gridview id="ContactsGridView" 
              datasourceid="ContactsSource"
              allowpaging="true" 
              autogeneratecolumns="false"
              onrowcommand="ContactsGridView_RowCommand"
              runat="server">

              <columns>
                <asp:buttonfield buttontype="Link" 
                  commandname="Add" 
                  text="Add"/>
                <asp:boundfield datafield="ContactID" 
                  headertext="Contact ID"/>
                <asp:boundfield datafield="FirstName" 
                  headertext="First Name"/> 
                <asp:boundfield datafield="LastName" 
                  headertext="Last Name"/>
              </columns>

            </asp:gridview>

          </td>

          <td style="vertical-align:top; width:50%">

            Contacts: <br/>
            <asp:listbox id="ContactsListBox"
              runat="server" Height="200px" Width="200px"/>

          </td>
        </tr>
      </table>

      <!-- 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="ContactsSource"
        selectcommand="Select [ContactID], [FirstName], [LastName] From Person.Contact"
        connectionstring="<%$ ConnectionStrings:AdventureWorks_DataConnectionString%>" 
        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 ContactsGridView_RowCommand(ByVal sender As Object, ByVal e As GridViewCommandEventArgs)

    ' If multiple buttons are used in a GridView control, use the
    ' CommandName property to determine which button was clicked.
    If e.CommandName = "Add" Then
    
      ' Convert the row index stored in the CommandArgument
      ' property to an Integer.
      Dim index As Integer = Convert.ToInt32(e.CommandArgument)
            
      ' Retrieve the row that contains the button clicked 
      ' by the user from the Rows collection.
      Dim row As GridViewRow = ContactsGridView.Rows(index)
            
      ' Create a new ListItem object for the contact in the row.     
      Dim item As New ListItem()
      item.Text = Server.HtmlDecode(row.Cells(2).Text) & " " & _
        Server.HtmlDecode(row.Cells(3).Text)
            
      ' If the contact is not already in the ListBox, add the ListItem 
      ' object to the Items collection of the ListBox control. 
      If Not ContactsListBox.Items.Contains(item) Then
      
        ContactsListBox.Items.Add(item)
        
      End If
      
    End If
    
  End Sub
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>GridView RowCommand Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>GridView RowCommand Example</h3>

      <table width="100%">
        <tr>
          <td style="width:50%">

            <asp:gridview id="ContactsGridView" 
              datasourceid="ContactsSource"
              allowpaging="true" 
              autogeneratecolumns="false"
              onrowcommand="ContactsGridView_RowCommand"
              runat="server">

              <columns>
                <asp:buttonfield buttontype="Link" 
                  commandname="Add" 
                  text="Add"/>
                <asp:boundfield datafield="ContactID" 
                  headertext="Contact ID"/>
                <asp:boundfield datafield="FirstName" 
                  headertext="First Name"/> 
                <asp:boundfield datafield="LastName" 
                  headertext="Last Name"/>
              </columns>

            </asp:gridview>

          </td>

          <td style="vertical-align:top; width:50%">

            Contacts: <br/>
            <asp:listbox id="ContactsListBox"
              runat="server" Height="200px" Width="200px"/>

          </td>
        </tr>
      </table>

      <!-- 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="ContactsSource"
        selectcommand="Select [ContactID], [FirstName], [LastName] From Person.Contact"
        connectionstring="<%$ ConnectionStrings:AdventureWorks_DataConnectionString%>" 
        runat="server"/>

    </form>
  </body>
</html>

다음 예제에서는 행 단추를 클릭할 때 이벤트를 사용하여 RowCommand 제품 가격을 업데이트하는 방법을 보여 줍니다. 이 예제에서는 컨트롤에 대해 GridView 페이징 기능을 사용하도록 설정하고 컨트롤의 Button 속성을 적절한 행 인덱스로 설정합니다CommandArgument.


<%@ 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 ProductsGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
  {
    // If multiple buttons are used in a GridView control, use the
    // CommandName property to determine which button was clicked.
    if(e.CommandName=="Increase")
    {
      // Convert the row index stored in the CommandArgument
      // property to an Integer.
      int index = Convert.ToInt32(e.CommandArgument);

      // Retrieve the row that contains the button clicked 
      // by the user from the Rows collection.      
      GridViewRow row = ProductsGridView.Rows[index];

      // Calculate the new price.
      Label listPriceTextBox = (Label)row.FindControl("PriceLabel");
      listPriceTextBox.Text = (Convert.ToDouble(listPriceTextBox.Text) * 1.05).ToString();     

      // Update the row.
      ProductsGridView.UpdateRow(index, false);
    }
  }
</script>

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

      <h3>GridView RowCommand Example</h3>

      <asp:GridView id="ProductsGridView" 
        DataSourceID="ProductsDataSource"
        DataKeyNames="ProductID"
        AllowPaging="True" 
        OnRowCommand="ProductsGridView_RowCommand"
        AutoGenerateColumns="False"
        runat="server">
        <Columns>
          <asp:BoundField DataField="Name" HeaderText="Product Name" />
          <asp:BoundField DataField="ProductNumber" HeaderText="Product Number" />          
          <asp:TemplateField HeaderText="Price">
            <ItemTemplate>
              <asp:Label ID="PriceLabel" runat="server" 
                Text='<%# Bind("ListPrice") %>'>
              </asp:Label>
            </ItemTemplate>
          </asp:TemplateField>
          <asp:TemplateField>
            <ItemTemplate>                
              <asp:Button runat="server" ID="IncreaseButton"
                Text="Increase Price 5%"
                CommandName="Increase"
                CommandArgument="<%# ((GridViewRow) Container).RowIndex %>" />
            </ItemTemplate>
          </asp:TemplateField>
        </Columns>
      </asp:GridView>

      <!-- 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="ProductsDataSource"
        SelectCommand="SELECT [ProductID], [Name], [ProductNumber], [ListPrice] 
          FROM Production.Product 
          WHERE ListPrice <> 0"
        UpdateCommand="UPDATE Production.Product SET [ListPrice] = @ListPrice 
          WHERE [ProductID] = @ProductID"
        ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
        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 ProductsGridView_RowCommand(ByVal sender As Object, ByVal e As GridViewCommandEventArgs)

    ' If multiple buttons are used in a GridView control, use the
    ' CommandName property to determine which button was clicked.
    If e.CommandName = "Increase" Then
    
      ' Convert the row index stored in the CommandArgument
      ' property to an Integer.
      Dim index = Convert.ToInt32(e.CommandArgument)
            
      ' Retrieve the row that contains the button clicked 
      ' by the user from the Rows collection.
      Dim row = ProductsGridView.Rows(index)
      
      ' Calculate the new price.
      Dim listPriceTextBox = CType(row.FindControl("PriceLabel"), Label)
      listPriceTextBox.Text = (Convert.ToDouble(listPriceTextBox.Text) * 1.05).ToString()

      ' Update the row.
      ProductsGridView.UpdateRow(index, False)
      
    End If
    
  End Sub
</script>

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

      <h3>GridView RowCommand Example</h3>

      <asp:GridView id="ProductsGridView" 
        DataSourceID="ProductsDataSource"
        DataKeyNames="ProductID"
        AllowPaging="True" 
        OnRowCommand="ProductsGridView_RowCommand"
        AutoGenerateColumns="False"
        runat="server">
        <Columns>
          <asp:BoundField DataField="Name" HeaderText="Product Name" />
          <asp:BoundField DataField="ProductNumber" HeaderText="Product Number" />          
          <asp:TemplateField HeaderText="Price">
            <ItemTemplate>
              <asp:Label ID="PriceLabel" runat="server" 
                Text='<%# Bind("ListPrice") %>'>
              </asp:Label>
            </ItemTemplate>
          </asp:TemplateField>
          <asp:TemplateField>
            <ItemTemplate>                
              <asp:Button runat="server" ID="IncreaseButton"
                Text="Increase Price 5%"
                CommandName="Increase"
                CommandArgument="<%# CType(Container, GridViewRow).RowIndex %>" />
            </ItemTemplate>
          </asp:TemplateField>
        </Columns>
      </asp:GridView>

      <!-- 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="ProductsDataSource"
        SelectCommand="SELECT [ProductID], [Name], [ProductNumber], [ListPrice] 
          FROM Production.Product 
          WHERE ListPrice <> 0"
        UpdateCommand="UPDATE Production.Product SET [ListPrice] = @ListPrice 
          WHERE [ProductID] = @ProductID"
        ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
        runat="server" />

    </form>
  </body>
</html>

설명

컨트롤 RowCommand 에서 단추를 클릭하면 이벤트가 발생합니다 GridView . 이렇게 하면 이 이벤트가 발생할 때마다 사용자 지정 루틴을 수행하는 이벤트 처리 메서드를 제공할 수 있습니다.

컨트롤 내의 GridView 단추는 컨트롤의 기본 제공 기능 중 일부를 호출할 수도 있습니다. 이러한 작업 중 하나를 수행하려면 단추의 속성을 다음 표의 값 중 하나로 설정합니다 CommandName .

CommandName 설명
Cancel 편집 작업을 취소하고 컨트롤을 GridView 읽기 전용 모드로 반환합니다. RowCancelingEdit 이벤트를 발생시킵니다.
Delete 현재 레코드를 삭제합니다. 및 RowDeleted 이벤트를 발생합니다RowDeleting.
Edit 현재 레코드를 편집 모드로 전환합니다. RowEditing 이벤트를 발생시킵니다.
Page 페이징 작업을 수행합니다. CommandArgument 단추의 속성을 "First", "Last", "Next", "Prev" 또는 페이지 번호로 설정하여 수행할 페이징 작업의 유형을 지정합니다. 및 PageIndexChanged 이벤트를 발생합니다PageIndexChanging.
Select 현재 레코드를 선택합니다. 및 SelectedIndexChanged 이벤트를 발생합니다SelectedIndexChanging.
Sort 컨트롤을 정렬합니다 GridView . 및 Sorted 이벤트를 발생합니다Sorting.
Update 데이터 원본의 현재 레코드를 업데이트합니다. 및 RowUpdated 이벤트를 발생합니다RowUpdating.

이전 표에 RowCommand 나열된 단추를 클릭할 때 이벤트가 발생하지만 테이블에 나열된 이벤트를 작업에 사용하는 것이 좋습니다.

GridViewCommandEventArgs 개체가 이벤트 처리 메서드에 전달되므로 클릭한 단추의 명령 이름과 명령 인수를 확인할 수 있습니다.

메모

이벤트를 발생시킨 행의 인덱스 확인 하려면 이벤트에 전달 되는 이벤트 인수의 속성을 사용 합니다 CommandArgument . 클래스는 ButtonField 적절한 인덱스 CommandArgument 값으로 속성을 자동으로 채웁니다. 다른 명령 단추의 경우 명령 단추의 CommandArgument 속성을 수동으로 설정해야 합니다. 예를 들어 컨트롤에 페이징을 CommandArgument<%# Container.DataItemIndex %> 사용할 수 없는 경우 GridView 를 설정할 수 있습니다.

이벤트를 처리하는 방법에 대한 자세한 내용은 이벤트 처리 및 발생을 참조하세요.

적용 대상

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