<%@ Page Language="VB" AutoEventWireup="false" CodeFile="testupanel.aspx.vb" Inherits="testupanel" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<div>
<asp:UpdatePanel ID="Updatepanel1" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="TextBox1" />
</Triggers>
<ContentTemplate>
<asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true"></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
</div>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</form>
</body>
</html>
Partial Class testupanel
Inherits System.Web.UI.Page
Protected Sub form1_Load(sender As Object, e As EventArgs) Handles form1.Load
If Not IsPostBack Then
Label1.Text = Date.Now.ToString
End If
End Sub
Protected Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles TextBox1.TextChanged
Label1.Text = "POST BACK"
End Sub
End Class
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Textbox in update panel visual studio 2012 not working correctly
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