ListView.InsertNewItem Method (Boolean)


Inserts the current record in the data source.

Namespace:   System.Web.UI.WebControls
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

Public Overridable Sub InsertNewItem (
	causesValidation As Boolean


Type: System.Boolean

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

Exception Condition

The ListView control does not have an insert item.


The DataSourceView object associated with the ListView control is null.

Use the InsertNewItem method to programmatically insert an item in the data source. This method is typically used to insert an item from outside the ListView control, such as from a different control on the page.

To use the InsertNewItem method, you must define an InsertItemTemplate template in the ListView control. You must also set the InsertItemPosition property to a value different from InsertItemPosition.None. To specify whether page validation is performed before the insert operation, use the causesValidation parameter.

This method raises the ItemInserted and ItemInserting events.

The following example shows how to use the InsertNewItem method to programmatically insert the contents of the insert item of a ListView control into the data source.

System_CAPS_security Security Note

This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview.

<%@ Page language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

<script runat="server">

  Protected Sub InsertButton_Click(ByVal sender As Object, _
                                   ByVal e As EventArgs)

    ' Clears any existing message.
    MessageLabel.Text = ""

    ' Use the InsertNewItem method to programmatically insert
    ' the current record in the ListView control.

  End Sub

  Protected Sub DepartmentsListView_ItemInserted(ByVal sender As Object, _
                                                 ByVal e As ListViewInsertedEventArgs)

    ' Handles exceptions that might occur
    ' during the insert operation.
    If Not (e.Exception Is Nothing) Then
      If e.AffectedRows = 0 Then
        e.KeepInInsertMode = True
        MessageLabel.Text = "An exception occurred inserting the new department. " & _
              "Please verify your values and try again."
        MessageLabel.Text = "An exception occurred inserting the new department. " & _
              "Please verify the values in the newly inserted item."
      End If

      e.ExceptionHandled = True
    End If

  End Sub

<html xmlns="" >
  <head id="Head1" runat="server">
    <title>ListView InsertNewItem Example</title>
    <form id="form1" runat="server">

      <h3>ListView InsertNewItem Example</h3>


      <asp:ListView ID="DepartmentsListView" 
        runat="server" >
          <table runat="server" id="tblDepartments" width="640px" border="1">
            <tr runat="server" id="itemPlaceholder" />
          <tr runat="server">
              <asp:Label ID="NameLabel" runat="Server" Text='<%#Eval("Name") %>' />
              <asp:Label ID="GroupNameLabel" runat="Server" Text='<%#Eval("GroupName") %>' />
          <tr style="background-color:#00BFFF">
              <asp:Label runat="server" ID="NameLabel" AssociatedControlID="NameTextBox" 
                Text="Name:" Font-Bold="true"/><br />
              <asp:TextBox ID="NameTextBox" runat="server" Text='<%#Bind("Name") %>' />
              <asp:Label runat="server" ID="GroupNameLabel" AssociatedControlID="GroupNameTextBox" 
                Text="Group Name:" Font-Bold="true" /><br />
              <asp:TextBox ID="GroupNameTextBox" runat="server" 
                Text='<%#Bind("GroupName") %>' MaxLength="50" />
      </asp:ListView><br />

      <asp:Label ID="MessageLabel"
        runat="server" /> <br />

      <asp:Button ID="InsertButton"
        Text="Insert new record"
        runat="server"  />

      <!-- 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="DepartmentsDataSource" runat="server" 
        ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>"
        SelectCommand="SELECT DepartmentID, Name, GroupName FROM HumanResources.Department"
        InsertCommand="INSERT INTO HumanResources.Department(Name, GroupName) 
	            VALUES (@Name, @GroupName)">


.NET Framework
Available since 3.5
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