FormView.ItemInserted Zdarzenie

Definicja

Występuje po kliknięciu przycisku wstawiania w FormView kontrolce, ale po zakończeniu operacji wstawiania.Occurs when an Insert button within a FormView control is clicked, but after the insert operation.

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

Typ zdarzenia

FormViewInsertedEventHandler

Przykłady

Poniższy przykład ilustruje sposób użycia ItemInserted zdarzenia w celu ustalenia, czy wystąpił wyjątek podczas operacji wstawiania.The following example demonstrates how to use the ItemInserted event to determine whether an exception occurred during an insert operation.


<%@ 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 EmployeeFormView_ItemInserted(Object sender, FormViewInsertedEventArgs e)
  {
    // Use the Exception property to determine whether an exception
    // occurred during the insert operation.
    if (e.Exception == null)
    {
      // Use the AffectedRows property to determine whether the
      // record was inserted. Sometimes an error might occur that 
      // does not raise an exception, but prevents the insert
      // operation from completing.
      if (e.AffectedRows == 1)
      {
        MessageLabel.Text = "Record inserted successfully.";
      }
      else
      {
        MessageLabel.Text = "An error occurred during the insert operation.";
        
        // Use the KeepInInsertMode property to remain in insert mode
        // when an error occurs during the insert operation.
        e.KeepInInsertMode = true;
      }
    }
    else
    {
      // Insert the code to handle the exception.
      MessageLabel.Text = e.Exception.Message;
      
      // Use the ExceptionHandled property to indicate that the 
      // exception has already been handled.
      e.ExceptionHandled = true;
      e.KeepInInsertMode = true;
    }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>FormViewInsertedEventArgs Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>FormViewInsertedEventArgs Example</h3>
                       
      <asp:formview id="EmployeeFormView"
        datasourceid="EmployeeSource"
        allowpaging="true"
        datakeynames="EmployeeID"
        emptydatatext="No employees found."
        oniteminserted="EmployeeFormView_ItemInserted"  
        runat="server">

        <itemtemplate>
          <table>
            <tr>
              <td rowspan="5">
                <asp:image id="CompanyLogoImage"
                  imageurl="~/Images/Logo.jpg"
                  alternatetext="Company logo"
                  runat="server"/>
              </td>
              <td colspan="2">
                  &nbsp; 
              </td>
            </tr>
            <tr>
              <td>
                <b>Name:</b>
              </td>
              <td>
                <%# Eval("FirstName") %> <%# Eval("LastName") %>
              </td>
            </tr>
            <tr>
              <td>
                <b>Title:</b>
              </td>
              <td>
                <%# Eval("Title") %>
              </td>
            </tr>
            <tr>
              <td colspan="2">
                <asp:linkbutton id="NewButton"
                  text="New"
                  commandname="New"
                  runat="server"/> 
              </td>
            </tr>
          </table>       
        </itemtemplate>
        <insertitemtemplate>
          <table>
            <tr>
              <td rowspan="4">
                <asp:image id="CompanyLogoEditImage"
                  imageurl="~/Images/Logo.jpg"
                  alternatetext="Company logo"
                  runat="server"/>
              </td>
              <td colspan="2">
                  &nbsp; 
              </td>
            </tr>
            <tr>
              <td>
                <b><asp:Label
                  runat="server" 
                  AssociatedControlID="FirstNameInsertTextBox" 
                  Text="Name" />:</b>
              </td>
              <td>
                <asp:textbox id="FirstNameInsertTextBox"
                  text='<%# Bind("FirstName") %>'
                  runat="server"/>
                <asp:textbox id="LastNameInsertTextBox"
                  text='<%# Bind("LastName") %>'
                  runat="server"/>
              </td>
            </tr>
            <tr>
              <td>
                <b><asp:Label
                  runat="server" 
                  AssociatedControlID="TitleInsertTextBox" 
                  Text="Title" />:</b>
              </td>
              <td>
                <asp:textbox id="TitleInsertTextBox"
                  text='<%# Bind("Title") %>'
                  runat="server"/> 
              </td>
            </tr>
            <tr>
              <td colspan="2">
                <asp:linkbutton id="InsertButton"
                  text="Insert"
                  commandname="Insert"
                  runat="server"/>
                <asp:linkbutton id="CancelButton"
                  text="Cancel"
                  commandname="Cancel"
                  runat="server"/> 
              </td>
            </tr>
          </table>       
        </insertitemtemplate> 
                  
      </asp:formview>
      
      <br/><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="EmployeeSource"
        selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
        insertcommand="Insert Into [Employees] ([LastName], [FirstName], [Title]) VALUES (@LastName, @FirstName, @Title)"
        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 EmployeeFormView_ItemInserted(ByVal sender As Object, ByVal e As FormViewInsertedEventArgs)
  
    ' Use the Exception property to determine whether an exception
    ' occurred during the insert operation.
    If e.Exception Is Nothing Then
    
      ' Use the AffectedRows property to determine whether the
      ' record was inserted. Sometimes an error might occur that 
      ' does not raise an exception, but prevents the insert
      ' operation from completing.
      If e.AffectedRows = 1 Then
      
        MessageLabel.Text = "Record inserted successfully."
      
      Else
      
        MessageLabel.Text = "An error occurred during the insert operation."
        
        ' Use the KeepInInsertMode property to remain in insert mode
        ' when an error occurs during the insert operation.
        e.KeepInInsertMode = True
      
      End If
    
    Else
    
      ' Insert the code to handle the exception.
      MessageLabel.Text = e.Exception.Message
      
      ' Use the ExceptionHandled property to indicate that the 
      ' exception has already been handled.
      e.ExceptionHandled = True
      e.KeepInInsertMode = True
    
    End If
        
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>FormViewInsertedEventArgs Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>FormViewInsertedEventArgs Example</h3>
                       
      <asp:formview id="EmployeeFormView"
        datasourceid="EmployeeSource"
        allowpaging="true"
        datakeynames="EmployeeID"
        emptydatatext="No employees found."
        oniteminserted="EmployeeFormView_ItemInserted"  
        runat="server">

        <itemtemplate>
          <table>
            <tr>
              <td rowspan="5">
                <asp:image id="CompanyLogoImage"
                  imageurl="~/Images/Logo.jpg"
                  alternatetext="Company logo"
                  runat="server"/>
              </td>
              <td colspan="2">
                  &nbsp; 
              </td>
            </tr>
            <tr>
              <td>
                <b>Name:</b>
              </td>
              <td>
                <%# Eval("FirstName") %> <%# Eval("LastName") %>
              </td>
            </tr>
            <tr>
              <td>
                <b>Title:</b>
              </td>
              <td>
                <%# Eval("Title") %>
              </td>
            </tr>
            <tr>
              <td colspan="2">
                <asp:linkbutton id="NewButton"
                  text="New"
                  commandname="New"
                  runat="server"/> 
              </td>
            </tr>
          </table>       
        </itemtemplate>
        <insertitemtemplate>
          <table>
            <tr>
              <td rowspan="4">
                <asp:image id="CompanyLogoEditImage"
                  imageurl="~/Images/Logo.jpg"
                  alternatetext="Company logo"
                  runat="server"/>
              </td>
              <td colspan="2">
                  &nbsp; 
              </td>
            </tr>
            <tr>
              <td>
                <b><asp:Label
                  runat="server" 
                  AssociatedControlID="FirstNameInsertTextBox" 
                  Text="Name" />:</b>
              </td>
              <td>
                <asp:textbox id="FirstNameInsertTextBox"
                  text='<%# Bind("FirstName") %>'
                  runat="server"/>
                <asp:textbox id="LastNameInsertTextBox"
                  text='<%# Bind("LastName") %>'
                  runat="server"/>
              </td>
            </tr>
            <tr>
              <td>
                <b><asp:Label
                  runat="server" 
                  AssociatedControlID="TitleInsertTextBox" 
                  Text="Title" />:</b>
              </td>
              <td>
                <asp:textbox id="TitleInsertTextBox"
                  text='<%# Bind("Title") %>'
                  runat="server"/> 
              </td>
            </tr>
            <tr>
              <td colspan="2">
                <asp:linkbutton id="InsertButton"
                  text="Insert"
                  commandname="Insert"
                  runat="server"/>
                <asp:linkbutton id="CancelButton"
                  text="Cancel"
                  commandname="Cancel"
                  runat="server"/> 
              </td>
            </tr>
          </table>       
        </insertitemtemplate> 
                  
      </asp:formview>
      
      <br/><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="EmployeeSource"
        selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
        insertcommand="Insert Into [Employees] ([LastName], [FirstName], [Title]) VALUES (@LastName, @FirstName, @Title)"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>
            
    </form>
  </body>
</html>

Uwagi

FormViewKontrolka wywołuje ItemInserted zdarzenie, gdy kliknięto przycisk Wstaw (przycisk z CommandName właściwością ustawioną na "INSERT") wewnątrz kontrolki, ale po wstawieniu tego FormView rekordu przez formant.The FormView control raises the ItemInserted event when an Insert button (a button with its CommandName property set to "Insert") within the control is clicked, but after the FormView control inserts the record. Dzięki temu można podać metodę obsługi zdarzeń, która wykonuje procedurę niestandardową, na przykład sprawdzając wyniki operacji wstawiania, gdy wystąpi zdarzenie.This allows you to provide an event-handling method that performs a custom routine, such as checking the results of an insert operation, whenever this event occurs.

FormViewInsertedEventArgsObiekt jest przesyłany do metody obsługi zdarzeń, co pozwala określić liczbę rekordów, których to dotyczy, oraz ewentualne wyjątki, które mogły wystąpić.A FormViewInsertedEventArgs object is passed to the event-handling method, which allows you to determine the number of records affected and any exceptions that might have occurred. Aby określić liczbę rekordów, których dotyczy operacja wstawiania, użyj AffectedRows właściwości.To determine the number of records affected by the insert operation, use the AffectedRows property. Użyj Exception właściwości, aby określić, czy wystąpiły wyjątki.Use the Exception property to determine whether any exceptions occurred. Możesz również wskazać, czy wyjątek został obsłużony w metodzie obsługi zdarzeń przez ustawienie ExceptionHandled właściwości.You can also indicate whether the exception was handled in the event-handling method by setting the ExceptionHandled property. Jeśli musisz uzyskać dostęp do wartości wstawionego rekordu, użyj Values właściwości.If you need to access the values of the inserted record, use the Values property.

Domyślnie FormView formant wraca do trybu określonego przez DefaultMode Właściwość po operacji wstawiania.By default, the FormView control returns to the mode specified by the DefaultMode property after an insert operation. Aby zachować FormView formant w trybie wstawiania, należy ustawić KeepInInsertMode Właściwość na true .To keep the FormView control in insert mode, set the KeepInInsertMode property to true.

Aby uzyskać więcej informacji o sposobie obsługi zdarzeń, zobacz Obsługa iwywoływanie zdarzeń.For more information about how to handle events, see Handling and Raising Events.

Dotyczy

Zobacz też