Questions on UI for ASP.NET AJAX Forum

2 answers

242 views

Update the radgrid on the client side, then open the radwindow.

Generates errors:

Uncaught Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object. Telerik.Web.UI.WebResource.axd:6

Code C#:

using System;

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

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void rgGrid_NeedDataSource(object sender, Telerik.Web.UI.GridNeedDataSourceEventArgs e)

{

if (!IsPostBack)

{

rgGrid.DataSource = new System.Data.DataTable();

return;

}

var list = new[]{

new{

Description = "Text 1"

},

new{

Description = "Text 2"

}

};

rgGrid.DataSource = list;

}

Code ASP.NET:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="MLDefault" %>

<!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">

<head runat="server">

<title></title>

</head>

<body>

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

<script type="text/javascript">

function OpenWindow() {

$find('<%= rgGrid.ClientID%>').get_masterTableView().rebind();

$find('<%= rwGrid.ClientID %>').show();

}

</script>

<telerik:RadScriptManager ID="ScriptManager" runat="server" />

<telerik:RadAjaxManager ID="RadAjaxManager" runat="server">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="rgGrid">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="rgGrid" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<input type="button" value="Search" onclick="javascript:OpenWindow();" />

<telerik:RadWindowManager ID="RadWindowManager" runat="server" EnableShadow="True"

Behaviors="None" InitialBehaviors="None" ShowContentDuringLoad="False" VisibleStatusbar="False"

Modal="true" RestrictionZoneID="aspnetForm">

<Windows>

<telerik:RadWindow ID="rwGrid" runat="server" Behaviors="Close,Move">

<ContentTemplate>

<telerik:RadGrid ID="rgGrid" runat="server" AutoGenerateColumns="False"CellSpacing="0"

GridLines="None" OnNeedDataSource="rgGrid_NeedDataSource">

<MasterTableView AllowSorting="False">

<NoRecordsTemplate>

<div>

Empty</div>

</NoRecordsTemplate>

<Columns>

<telerik:GridBoundColumn DataField="Description" />

</Columns>

</MasterTableView>

</telerik:RadGrid>

</ContentTemplate>

</telerik:RadWindow>

</Windows>

</telerik:RadWindowManager>

</form>

</body>

</html>

Thanks for the help.

Window

answered on 03 Jul 2012

1 answer

83 views

HtmlChart ActiveRegions and image maps?

Hi - I've been trying to convert my application from using RadCharts to using the much nicer looking RadHtmlCharts (Q2 2012 v2012.2.607.35), but have got stuck at implementing the equivalent of the RadChart's ActiveRegions (http://www.telerik.com/help/aspnet-ajax/chart-image-maps.html).

Does anyone know if the RadHtmlChart supports any form of active elements with click through to a custom url?

Thanks in advance
Tom

Chart (HTML5)

answered on 03 Jul 2012

12 answers

667 views

Migrating from UpdatePanel to RadAjaxPanel

I have a server control which shows/hides a few radcombobox controls based on previous selections (within the same control). These controls are placed inside an UpdatePanel (panel created OnInit, controls added OnLoad) to minimize full page refreshes and this all works great.

We're consolidating on RadAjax and I figured it would be a simple migration to RadAjaxPanel but when I switch in the RadAjaxPanel I'm getting full page refreshes, not just on the first select (as described in other threads) but on all control interactions.

I have set EnableAJAX to true and I have also hooked the AjaxSettingCreating event to get the default behaviour of UpdatePanel (i.e. UpdateMode = always and ChildrenAsTriggers = true).

Are there some other settings I need to make to get parity with the UpdatePanel?

Many Thanks,

Brian

Ajax

answered on 03 Jul 2012

3 answers

410 views

OnClientClicked event in code behind

Hi,

I have a simple button that I create at runtime.

Dim btn as New RadButton()

btn.AutoPostBack = False

btn.OnClientClicked = "BtnClicked"

function BtnClicked(sender, args)

{

alert("Hey!");

}

When I click on the button, BtnClick is not fired. What is wrong my code?

Thanks.

Button

answered on 03 Jul 2012

5 answers

110 views

RadAjaxManager loading/displaying controls in reverse order

I am upgrading 2008 Q3 version of telerik control to 2011 Q3 version in my project in .NET 4.0. I have a RadAjaxManager used in the page that has a updated control as asp:panel. Multiple user controls are dynamically loaded in to the asp:panel. Initally all the instance of the user control displays the loading image before displaying the content. Before with 2008 version, it dislays all the user controls in top down order. but with the 2011 version it displays in bottom up which is really strange. I appreciate any suggestion on fixing this order issue. Thanks in advance!

Ajax

answered on 03 Jul 2012

1 answer

190 views

RadAjaxLoadingPanel with MasterPage?

Within my master page I have a RadSplitter layout. One of the Splitter panes contains the MasterPage contentholder and since the requirement called for only this area to update on the click of a navigation node item I placed an iframe within the contentholder (All content in iframe is located within the site itself). I was wondering however, if there is a way to utilize and show the RadAjaxLoadingPanel after the navigation node item has been clicked and hides when the page in the iframe is finished loading?

Ajax

answered on 03 Jul 2012

6 answers

129 views

Inserting new RadGrid backend (C#)

Hello,

I was wondering if there is a way to insert a new radgrid in c#. I basically want to have a grid template that i will use a bunch of times on a web page, but the amount of grids i will create depends on the data being passed. Is there a way I can achieve this?

Thanks,

Nick

Grid

answered on 03 Jul 2012

1 answer

69 views

raddatepicker important bug after last upgrade

Hi to all,
after upgrade to v.2012.2.607.35 the label of the control RADDatePicker is rendered duplicate.!!!
I post you my code page:

<telerik:RadDatePicker ID="RadDatePicker1" DateInput-Label="TESTO:" runat="server">

<DateInput runat="server" />

</telerik:RadDatePicker>

Thanks in advance
By Gaetano

Grid

answered on 03 Jul 2012

1 answer

83 views

RadInputManager on Rotator

Hi,

Currently if we want to have a validator on the textbox on the rotator or repeater, based on this link:
http://www.telerik.com/help/aspnet-ajax/input-inputmanager-basics.html

how if we have two validator in the repeater e.g one is email textbox and one is decimal textbox,

currently i bind the radInput Manager on the code behind ,
i do find control of the textbox and add those textboxes on the rad input manager,

TextBox txtOrderNumber = (TextBox)rptC.Items[j].FindControl("txtOrderNumber");

RegExpTextBoxSetting RegExpBehavior1 = (RegExpTextBoxSetting)RadInputManager1.GetSettingByBehaviorID("RegExpBehavior1");

RegExpBehavior1.TargetControls.Add(new TargetInput(txtOrderNumber.UniqueID, true));

but it is only success add for the first textbox, the other textbox doesn't have validation.

Input

answered on 03 Jul 2012

3 answers

144 views

Data Binding in Grid

Hi All,
I am developing product using asp.net using c sharp..i have two methods are called selectRoles and SelectRoleFeature and i have to bind those two methods in single RadGrid. Here display selectRoles are parent and SelectRoleFeatures are child in Grid through expand and collapse.which type of grid do this. How to implement this scenario..

Thanks in Advance..!

Grid

answered on 03 Jul 2012