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RadAjaxLoadingPanel not loading

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Ajax

This is a migrated thread and some comments may be shown as answers.

Ronen asked on 16 Feb 2011, 01:02 PM

i have a radgrid and an asp button which loads the data to the radgrid from the database, i want to display a waiting icon until the server response with the data to fill the grid, i am trying this and it doesn't display anything:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="testloadingpage.aspx.cs" Inherits="testloadingpage" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" dir="rtl">

<head id="Head1" runat="server">

<link rel="stylesheet" type="text/css" href="css/Style.css" media="screen" />

<title>mailing lists</title>

</head>

<body>

<form id="form1" runat="server">

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">

</telerik:RadScriptManager>

<telerik:RadAjaxManager ID="RadAjaxManager1"

runat="server">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="Button1">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RadGridMailingList" LoadingPanelID="RadAjaxLoadingPanel1" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="RadGridMailingList">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RadGridMailingList"

UpdatePanelHeight="" LoadingPanelID="RadAjaxLoadingPanel1"/>

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<div id="mailingList" class="contentBlock">

<div class="submitButton">

<asp:Button ID="Button1" runat="server" Text="run query" OnClick="Button1_Click" />

</div>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" />

<telerik:RadGrid ID="RadGridMailingList"

Width="97%"

AllowSorting="True" PageSize="15" AllowPaging="True"

runat="server" ShowStatusBar="True" GridLines="Vertical"

OnNeedDataSource="RadGrid1_NeedDataSource">

<MasterTableView CommandItemDisplay="Top">

</MasterTableView>

</telerik:RadGrid>

</div>

</form>

</body>

</html>

3 Answers, 1 is accepted

answered on 20 Feb 2011, 09:18 AM

thanks, it's better, now i see the loading icon, but it's only shows the first time i press the button, at the following clicks , i see no loading icon,
here is the code behind:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Configuration;

using System.Data;

using System.Data.SqlClient;

namespace test

{

public partial class testloadingpage : System.Web.UI.Page

{

static string mConnectionString = ConfigurationManager.ConnectionStrings["test"].ToString();

static string select = "";

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

select = "SELECT * FROM test";

RadGridMailingList.DataBind();

}

protected void Button1_Click(object sender, EventArgs e)

{

select = "SELECT * from test";

RadGridMailingList.Rebind();

}

public DataTable GetDataTable(string query)

{

SqlConnection conn = new SqlConnection(mConnectionString);

SqlDataAdapter adapter = new SqlDataAdapter();

adapter.SelectCommand = new SqlCommand(query, conn);

DataTable myDataTable = new DataTable();

conn.Open();

try

{

adapter.Fill(myDataTable);

}

finally

{

conn.Close();

}

return myDataTable;

}

protected void RadGrid1_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)

{

RadGridMailingList.DataSource = GetDataTable(select);

}

answered on 23 Feb 2011, 03:26 PM

AjaxLoadingPanel.zip

Hello Ronen,

I tried to replicate the problem in a simple test project but to no avail. Find the project attached to this message and see if it helps to resolve the problem.

Regards,
Pavlina
the Telerik team

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