Questions on UI for ASP.NET AJAX Forum

1 answer

55 views

Running Multiple Instances of RadGrid Edit Error

Hi,

I've got two browser windows open, each having the same URL with a RadGrid showing different data.

When I try to edit rows on either grid, sometimes (not always) I get the attached error message. I have no idea why. Has anyone encountered this?

Thanks!

Grid

answered on 02 Jun 2015

1 answer

103 views

Linechart with linqdatasource

I have been looking for a working example of a LINE CHART that uses a linqdata source. They have an example of a bar chart, and I changed out the series type with a telerik:lineseries and it is just not working.

I am sure I am just missing something very easy here... Does anyone know of an example combining these two?

This should be stupid easy I would think.

Chart (HTML5)

answered on 02 Jun 2015

3 answers

1.1K+ views

Configure time picker for filter to use 24 hour time format....

Hi,

I have a grid column as follows:

<telerik:GridDateTimeColumn CurrentFilterFunction="GreaterThanOrEqualTo" DataField="ClockedInAt" DataType="System.DateTime" EditDataFormatString="dd-MMM-yyyy HH:mm" FilterControlAltText="Filter column column" FilterDateFormat="dd-MMM-yyyy HH:mm" PickerType="DateTimePicker" UniqueName="column">

</telerik:GridDateTimeColumn>

I want to change the Time Picker displayed in the filter bar to:

Display time in 24 hour format viz HH:mm
Change the interval from 1 hour to 30 mins

How can I achieve this?

Grid

answered on 02 Jun 2015

9 answers

358 views

Selecting RadPanelItem in code-behind with PersistStateInCookie doesn't work

Hi,
This seems like a bug to me. I'm trying to persist the state of my RadPanelBar using PersistStateInCookie, which works fine if I'm only updating the RadPanelBar by itself. However, if I try to update the RadPanelBar via another control on the page, like the click event in code-behind of a button, it doesn't work.
I understand from doing a little research that the cookie resets the state of the RadPanelBar in (or possibly just before) the PreRender event of the RadPanelBar control. This means that it will always overwrite the selection of a RadPanelItem by another control on the page.

Here is an example of what I'm talking about:
Default.aspx

    
            <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default" %> 
        
            <!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>  
        
                <telerik:RadStyleSheetManager id="RadStyleSheetManager1" runat="server" /> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server">  
        
                <telerik:RadScriptManager ID="RadScriptManager1" runat="server">  
        
                    <Scripts> 
        
                        <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" /> 
        
                        <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" /> 
        
                    </Scripts> 
        
                </telerik:RadScriptManager> 
        
                <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="LoadingPanel1">  
        
                    <AjaxSettings> 
        
                        <telerik:AjaxSetting AjaxControlID="dCurrentPage">  
        
                            <UpdatedControls> 
        
                                <telerik:AjaxUpdatedControl ControlID="dCurrentPage" /> 
        
                                <telerik:AjaxUpdatedControl ControlID="btnSelectPanel" /> 
        
                                <telerik:AjaxUpdatedControl ControlID="RadPanelBar1" /> 
        
                            </UpdatedControls> 
        
                        </telerik:AjaxSetting> 
        
                        <telerik:AjaxSetting AjaxControlID="RadPanelBar1">  
        
                            <UpdatedControls> 
        
                                <telerik:AjaxUpdatedControl ControlID="dCurrentPage" /> 
        
                                <telerik:AjaxUpdatedControl ControlID="RadPanelBar1" /> 
        
                                <telerik:AjaxUpdatedControl ControlID="btnSelectPanel" /> 
        
                            </UpdatedControls> 
        
                        </telerik:AjaxSetting> 
        
                    </AjaxSettings> 
        
                </telerik:RadAjaxManager> 
        
                <telerik:RadAjaxLoadingPanel ID="LoadingPanel1" runat="server" Transparency="30" 
        
                    BackColor="#E0E0E0">  
        
                    <img src='<%= RadAjaxLoadingPanel.GetWebResourceUrl(Page, "Telerik.Web.UI.Skins.Default.Ajax.loading.gif") %>' 
        
                        alt="Loading..." style="border: 0;" /> 
        
                </telerik:RadAjaxLoadingPanel> 
        
                <div style="float: left; margin-bottom: 10px; width: 270px">  
        
                    <telerik:RadPanelBar runat="server" ID="RadPanelBar1" PersistStateInCookie="True" 
        
                        OnPreRender="RadPanelBar1_PreRender">  
        
                        <Items> 
        
                            <telerik:RadPanelItem Text="ASP.NET controls" Expanded="true">  
        
                                <Items> 
        
                                    <telerik:RadPanelItem NavigateUrl="Default.aspx?page=menu" Text="RadMenu">  
        
                                    </telerik:RadPanelItem> 
        
                                    <telerik:RadPanelItem NavigateUrl="Default.aspx?page=combobox" Text="RadComboBox">  
        
                                    </telerik:RadPanelItem> 
        
                                    <telerik:RadPanelItem NavigateUrl="Default.aspx?page=panelbar" Text="RadPanelBar">  
        
                                    </telerik:RadPanelItem> 
        
                                    <telerik:RadPanelItem NavigateUrl="Default.aspx?page=treeview" Text="RadTreeView">  
        
                                    </telerik:RadPanelItem> 
        
                                </Items> 
        
                            </telerik:RadPanelItem> 
        
                            <telerik:RadPanelItem Text="WinForms controls">  
        
                                <Items> 
        
                                    <telerik:RadPanelItem Text="RadMenustrip" NavigateUrl="Default.aspx?page=menustrip">  
        
                                    </telerik:RadPanelItem> 
        
                                    <telerik:RadPanelItem Text="RadTabStrip" NavigateUrl="Default.aspx?page=tabstrip">  
        
                                    </telerik:RadPanelItem> 
        
                                    <telerik:RadPanelItem Text="RadToolStrip" NavigateUrl="Default.aspx?page=toolbarstrip">  
        
                                    </telerik:RadPanelItem> 
        
                                </Items> 
        
                            </telerik:RadPanelItem> 
        
                            <telerik:RadPanelItem Text="Other projects">  
        
                                <Items> 
        
                                    <telerik:RadPanelItem Text="SiteFinity" NavigateUrl="Default.aspx?page=sitefinity">  
        
                                    </telerik:RadPanelItem> 
        
                                    <telerik:RadPanelItem Text="Reporting" NavigateUrl="Default.aspx?page=reporting">  
        
                                    </telerik:RadPanelItem> 
        
                                    <telerik:RadPanelItem Text="RadAjax" NavigateUrl="Default.aspx?page=ajax">  
        
                                    </telerik:RadPanelItem> 
        
                                </Items> 
        
                            </telerik:RadPanelItem> 
        
                        </Items> 
        
                    </telerik:RadPanelBar> 
        
                </div> 
        
                <div class="smallModule" id="dCurrentPage" runat="server">  
        
                    <div class="rc1">  
        
                        <div class="rc2">  
        
                            <div class="rc3">  
        
                                <strong>Current page:</strong> 
        
                                <p style="padding: 5px 10px">  
        
                                    <asp:Literal runat="server" ID="Label1"></asp:Literal></p>  
        
                            </div> 
        
                        </div> 
        
                    </div> 
        
                </div> 
        
                <br /> 
        
                <div style="display:block">  
        
                    <asp:Button ID="btnSelectPanel" runat="server" Text="Select RadTabStrip" OnClick="btnSelectPanel_Click" /><br /> 
        
                    <a href="Default2.aspx">Go to Default2.aspx</a> 
        
                </div> 
        
                </form> 
        
            </body> 
        
            </html>

Default.aspx.cs

    
            using System;  
        
            using System.Web;  
        
            using System.Web.UI;  
        
            using System.Web.UI.WebControls;  
        
            using System.Data;  
        
            using System.Configuration;  
        
            using System.Web.Security;  
        
            using System.Web.UI.WebControls.WebParts;  
        
            using System.Web.UI.HtmlControls;  
        
            using Telerik.Web.UI;  
        
            public partial class Default : System.Web.UI.Page   
        
            {  
        
                protected void Page_Load(object sender, EventArgs e)  
        
                {  
        
                    Response.Cache.SetCacheability(HttpCacheability.NoCache);  
        
                }  
        
                protected void RadPanelBar1_PreRender(object sender, EventArgs e)  
        
                {  
        
                    RadPanelItem selectedItem = RadPanelBar1.SelectedItem;  
        
                    if (selectedItem != null)  
        
                    {  
        
                        Label1.Text = String.Format("This is the {0} page", selectedItem.Text);  
        
                    }  
        
                }  
        
                protected void btnSelectPanel_Click(object sender, EventArgs e)  
        
                {  
        
                    RadPanelItem item = RadPanelBar1.FindItemByText("RadTabStrip");  
        
                    RadPanelItem owner = item.Owner as RadPanelItem;  
        
                    owner.Expanded = true;  
        
                    item.Selected = true;  
        
                }  
        
            }

Default2.aspx

    
            <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %> 
        
            <!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">  
        
                <div> 
        
                This is another page.<br /> 
        
                    <a href="Default.aspx">Go back to Default.aspx</a> 
        
                </div> 
        
                </form> 
        
            </body> 
        
            </html>

If you select an item in the RadPanelBar, then click on the link to Go to Default2.aspx, then go back to the Default.aspx page you will see that the state has been maintained. However, if you click the button to select the "RadTabStrip" item in the RadPanelBar you will see that it does not work.
If you change PersistStateInCookie to False, clicking on the button does work, but obviously the the state is not maintained.

I'm sure there is a workaround for this, but it seems to me that it breaks the coding convention of the Page event lifecycle.
Any thoughts?

James Steward

PanelBar

answered on 02 Jun 2015

2 answers

103 views

ComboBox looses elements until refocus

Hi,

I have a RCB that is configuresd

<telerik:RadComboBox ID="RadComboBoxPlan" runat="server" AutoPostBack="True"

OnSelectedIndexChanged="OnPlanTextChanged" ChangeTextOnKeyBoardNavigation="True"

DropDownAutoWidth="Enabled"

EnableLoadOnDemand="True" Filter="StartsWith" DataSourceID="PlanSqlSource" DataTextField="name" DataValueField="plan_id"

OnItemsRequested="RadComboBoxPlan_OnItemsRequested" ViewStateMode="Enabled">

<DefaultItem Text="Choose plan" Value="-1" />

</telerik:RadComboBox>

OnPlanTextChanged updates a radgrid that is dependent on the value of the RCB asn the RadComboBoxPlan_OnItemsRequested updates the select statement of the sql source. It works fine when selecting a value for the first time, but if the dropdown button is clicked again the list will be empty save for the currently selected item. If focus is lost to the RCB and the dropdown button is clicked again the list will populate as expected.

Is there a way i can make sure the list is populated correctly the first time?

Kind regards

Casper

ComboBox

answered on 02 Jun 2015

1 answer

80 views

RadAjaxLoadingPanel backgroundposition ignored

Hi,

I must be missing something, but I am trying to place RadAjaxLoadingPanel in over the top of the updating control centred vertically and horizontally. But whatever I try the RadAjaxLoadingPanel is just placed in the top left corner of the updating control.

I.e in the example below the RadAjaxLoadingPanel1 is always displated in the top left corner of Panel1. Any ideas greatfull received.

<asp:Panel ID=Panel1 runat="server">

<div id="edit">

<div class="heading"><asp:Label ID="FormTitle" runat="server"></asp:Label></div>

<p />

<div>

<table border="1">...</table>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Transparency="1" MinDisplayTime="1000" backgroundPosition="center">

<asp:Image ID="Image1" runat="server" ImageUrl="../img/ajax-loader.gif" AlternateText="loading">

<asp:Image>

</telerik:RadAjaxLoadingPanel>

</div>

</div>

</asp:panel>

Ajax

answered on 02 Jun 2015

3 answers

208 views

different sizing for radcombobox for mobile & desktop

I have a radcombobox in my page (using Skin="WebBlue").

The page has loaded with different css style based on if it is rendered on mobile or desktop(style.css & stylemobile.css)

Now what I want to do is set different size property for the radcombobox: Height,Width and DropDownWidth etc. How do I overwrite it with css in different file? or is there any better solution?

I used table in HeaderTemplate and ItemTemplate, is it possible to use different width for cells based on mobile/desktop?

Thanks.

ComboBox

answered on 02 Jun 2015

1 answer

114 views

Child record won't show (when no parent)

Hello,

For security reasons, I do not want to show some of the parent items, but want to show only their children. How can this be achieved?

Thanks

TreeList

answered on 02 Jun 2015

1 answer

1.6K+ views

Telerik.Web.UI.WebResource.axd is missing in web.config

Our ASP.NET web forms project was updated from .NET 3.5 to .NET 4.5. This also meant we switched from Classic to Integrated pipeline mode for the App Pool. I began to see this error on pages that loaded the Telerik controls.

'~/Telerik.Web.UI.WebResource.axd' is missing in web.config. RadScriptManager requires a HttpHandler registration in web.config. Please, use
the control Smart Tag to add the handler automatically, or see the help for more information: Controls > RadScriptManager

After referencing the following webpages:

http://dotnetdawgs.com/post/Telerik-Web-UI-WebResource-axd-is-missing-in-webconfig.aspx
http://dotnet4europeanhosting.hostforlife.eu/post/European-ASPNET-Hosting-Amsterdam-How-to-resolve-7e-TelerikWebUIWebResourceaxd-is-missing-in-WebConfig.aspx
http://stackoverflow.com/questions/10889771/issue-with-telerik-web-ui-webresource-axd
http://stackoverflow.com/questions/7776087/when-i-run-asp-net-web-page-using-radgrid-telerik-control-on-server-side-it-gene?rq=1

I made the following changes...

I removed <httpHandlers> and <httpModules> from <system.web>

I removed the reference to the .NET 2 Telerik.Web.Design and Telerik.Web.UI DLLs, and added a reference to the .NET 4 DLLs.

I added <add name="Telerik.Web.UI.WebResource" path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource, Telerik.Web.UI" /> to the <system.webServer><handlers> section of web.config.

On my local workstation, this fixes the problem.

But, moving to our test web server, it still throws the same exception.

Test Server is confirmed running Windows Server 2008, IIS7, Integrated pipeline mode, .NET 4.5.

I've also tried leaving the <httpHandlers> in place, but that didn't work, either.

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