Questions on UI for ASP.NET AJAX Forum

30 answers

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This sticky thread lists known issues and breaking changes introduced in the UI for ASP.NET AJAX releases.

Q3 2011 (Version number: 2011.3.1115)

Problem: When adding items to OData enabled controls (RadMenu, RadTreeView, RadListBox, RadComboBox) through design time erroneous markup is applied to the control:

<telerik:RadListBox runat="server" ID="RadListBox1">

<Items>

</Items>

<WebServiceSettings>

<ODataSettings InitialContainerName="">

</ODataSettings>

</WebServiceSettings>

</telerik:RadListBox>

Please note the added ODataSettings section. It will cause JavaScript errors on the page.

Solution: Remove the ODataSetting section and the issue will vanish. The problem is also fixed in the Q3 SP1 release, version number 2011.3.1305

General Discussions

answered on 01 Mar 2021

0 answers

2 views

Downlaod old version of ASP.NET Ajax for University Project

Dear all,

is it possible to download an older version (2017?) or a demo from back than of the RadAsyncUpload for ASP.NET AJAX?

I would need it to demonstrate a vulnerability in a university subject.

AsyncUpload

asked on 05 May 2021

1 answer

7 views

Filter Button Missing from RadGrid Header After Adding a Custom Skin.

Hello,

I'm currently working on a project where I have a RadGrid displaying some data. The filter functionality is already implemented and I've created a custom skin from an existing embedded skin for the GridDateTimeColumn and implemented according to the documentation here. Everything works perfect except that upon adding the <FilterTemplate> and setting the custom skin for the <telerik:RadDatePicker> the filter button it's not generated anymore. I've inspected the page and indeed the button is not just hidden with CSS or missing it's icon, it's not present at all in the HTML and the result is in the pictures attached.

Here is the markup I'm using.

<telerik:GridDateTimeColumn DataField="foo" UniqueName="foo" HeaderText="foo" PickerType="DatePicker" DataFormatString="{0: MM/dd/yyyy}" FilterDateFormat="MM/dd/yyyy" ReadOnly="true">
     <HeaderStyle Width="130" Font-Bold="true" />
          <FilterTemplate>
               <telerik:RadDatePicker runat="server" Skin="MyCustomSkin" EnableEmbeddedSkins="false"></telerik:RadDatePicker>
          </FilterTemplate>
 </telerik:GridDateTimeColumn>

Once I remove the <FilterTemplate> and return the skin to default the Filter button is displayed. I've looked for solutions but I couldn't seem to find any. What's causing this behaviour? Is it something I'm missing?

Button

Filter

Grid

answered on 05 May 2021

1 answer

4 views

Enable postback on Radgrid checkbox header

Dear all,

I have the below radgrid defininition in my aspx page in which the selectionColumn is a checkbox. When I click on row, the postback is fired and I can calculate the sum of all selected rows and then display the results in the footer.

However when I click on the header checkbox, then all the lines are selected but the postback event is not fired.

Which property should be enable? Or maybe should it be managed differently?

My goal is to display in the footer, the sum of selected rows whatever it is by selection some specific rows or by using the select/unselect all checkbox.

Thanks

Ajax

CheckBox

Grid

answered on 05 May 2021

0 answers

4 views

Dynamic RadPageView loses content on postback

I'm creating a RadGrid dynamically and inserting a RadGrid into it.

When I change the RadGrid page, it disappears. How to keep the RadPageView content through Postback?

Besides that, none of RadGrid events are fired when the page changes.

My code:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="PageViewProblem.aspx.cs" Inherits="WebApp.PageViewProblem" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <telerik:RadTabStrip runat="server" ID="radTabStrip1" MultiPageID="radMultiViewSearchResult"></telerik:RadTabStrip>
            <telerik:RadMultiPage runat="server" ID="radMultiView1" SelectedIndex="0" EnableViewState="true"></telerik:RadMultiPage>
            <telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>
        </div>
    </form>
</body>
</html>

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Telerik.Web.UI;

namespace WebApp
{
    public partial class PageViewProblem : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                LoadData();
            }
        }

        private void LoadData()
        {
            RadTab tab1 = new Telerik.Web.UI.RadTab("Tab1");
            radTabStrip1.Tabs.Add(tab1);
            RadPageView resultPageView1 = new RadPageView();
            resultPageView1.ID = "radPageView1";
            radMultiView1.PageViews.Add(resultPageView1);

            RadGrid grid1 = new RadGrid();
            grid1.ID = "RadGrid1";
            grid1.PageSize = 5;
            grid1.AllowPaging = true;
            grid1.AllowCustomPaging = true;
            grid1.PagerStyle.AlwaysVisible = true;
            grid1.VirtualItemCount = 50;
            grid1.NeedDataSource += (sender, args) =>
            {
                grid1.DataSource = SimulateDataSource(grid1);
            };
            grid1.PageIndexChanged += (sender , args) =>
            {
                Debug.WriteLine("Please, load page number: {grid1.currentPage}");
            };
            resultPageView1.Controls.Add(grid1);
        }

        private object SimulateDataSource(RadGrid grid)
        {
            List<ItemData> result = new List<ItemData>();
            for (int i = grid.CurrentPageIndex + 1; i <= grid.CurrentPageIndex + 5; i++)
            {
                result.Add(new ItemData(i, $"Item Description {i}"));
            }
            return result;
        }
        private class ItemData
        {
            public int Value { get; set; }
            public string Description { get; set; }
            public ItemData(int value, string description)
            {
                this.Value = value;
                this.Description = description;
            }
        }
    }
}

Grid

updated question on 04 May 2021

1 answer

4 views

Responsive RadGrid

While following this tutorial to make my RadGrid stack columns vertically on a mobile device, I'm experiencing table width issues.

In these screenshots, you can see that when I disable the element.style "width: 100%", the table renders as expected. When it's enabled, the cells are all crammed in a narrow width.

So far, I've been unable to determine how to mimic this disabling in my CSS.

Any ideas how to resolve?

Grid

Styling

answered on 04 May 2021

0 answers

3 views

Telerik UI - Kendo UI conflict?

Hello, I am having problems running RadClientDataSource (data is loaded into RadMultiColumnComboBox) and KendoGrid on the same page. I get strange Ajax and Kendo errors in console about stuff being undefined. Are there any known incompatibilities between some Telerik UI controls and Kendo UI widgets? Are there controls that prefer external jQuery over internal one bundled in Telerik UI?

ClientDataSource

MultiColumnComboBox

asked on 04 May 2021

0 answers

3 views

Question over Ninject, ASP.NET Identity and Entity Framework

Hi all,

I am wondering what is the best way to setup Ninject, ASP.NET Identity and Entity Framework? Normally (without Ninject) I would create my solution by separating the MVC project from Data project and things would work just well, but I can't really figure out the best way to add Ninject there.

Is there any good example out there? I would like to handle user authentication with roles on my ASP.NET MVC project and handle the data access via EF.

asked on 04 May 2021

1 answer

5 views

TooltipsAppearance ClientTemplate is inheriting Series.Appearance.FillStyle.BackgroundColor

Hi.

I'm using TooltipsAppearance.ClientTemplate. It's working fine but it's inheriting the standard tooltip appearance and my template appears inside it.

Please refer to the attached image.

An example of what the tooltip should look like is also in the image. You will also notice the text in the bottom half of the tooltip is not showing. It is actually there but the text color is white so you can't see it.

What am I doing wrong?

Thanks.

Chart (HTML5)

answered on 04 May 2021

1 answer

3 views

MultiColumnComboBox - Issue with Grouping demo?

On the grouping demo page, I'm wondering if there's a bug.

When looking at the contents of the grouped combobox list, the grouping label of Argentina is shown as a column header instead of the black text to the right side.

MultiColumnComboBox

answered on 04 May 2021