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FormView.InsertItem(Boolean) Method

  • Reference

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Inserts the current record in the data source.

C# 
public virtual void InsertItem(bool causesValidation);

Parameters

causesValidation
Boolean

true to perform page validation when the method is called; otherwise, false.

Exceptions

HttpException

This method is called when the FormView control is not in insert mode.

-or-

The DataSourceView object associated with the FormView control is null.

Examples

The following example demonstrates how to use the InsertItem method to programmatically insert the current record in a FormView control in the data source.

ASP.NET (C#) 

<%@ 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 InsertButton_Click(Object sender, EventArgs e)
  {

    try
    {
      // Use the InsertItem method to programmatically insert
      // the current record in the FormView control. 
      EmployeeFormView.InsertItem(true);
      MessageLabel.Text = "";
    }
    catch (HttpException ex)
    {
      MessageLabel.Text = "The FormView control must be in insert mode to insert a record.";
    }

  }

  void CancelButton_Click(Object sender, EventArgs e)
  {
    
    // Return the FormView control to read-only
    // mode.
    EmployeeFormView.ChangeMode(FormViewMode.ReadOnly);
    MessageLabel.Text = "";

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>FormView InsertItem Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>FormView InsertItem Example</h3>
                       
      <asp:formview id="EmployeeFormView"
        datasourceid="EmployeeSource"
        allowpaging="true"
        datakeynames="EmployeeID"
        emptydatatext="No employees found."
        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">
                    
              </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">
                    
              </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>
          </table>       
        </insertitemtemplate> 
                  
      </asp:formview>
      
      <hr/>
      
      <asp:Button id="InsertButton"
        text="Insert Record"
        onclick="InsertButton_Click" 
        runat="server"/>
        
      <asp:Button id="CancelButton"
        text="Cancel"
        onclick="CancelButton_Click" 
        runat="server"/>
        
      <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>

Remarks

When the FormView control is in insert mode, use the InsertItem method to programmatically insert the current record in the data source. This method is commonly used when you need to insert the current record from outside of the FormView control, such as from a different control on the page.

Poznámka

The FormView control must be in insert mode when this method is called; otherwise, an HttpException is thrown.

To specify whether page validation is performed before the insert operation, use the causesValidation parameter. Calling this method also raises the ItemInserted and ItemInserting events.

Applies to

Produkt Verzie
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

See also