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Questions tagged [telerik]

Telerik is a vendor of development, team productivity, and automated testing tools, as well as UI components and content management solutions for Microsoft .NET.

Telerik (a Progress company) is a vendor of development, team productivity, and automated testing tools, as well as UI components and content management solutions for Microsoft .NET. Telerik was founded in 2002 by a few friends. Now Telerik has a team of more than 750 professionals spread around the globe in 11 offices.

Telerik developed tools targeted to support .NET technologies, such as ASP.NET AJAX, ASP.NET MVC, WPF, Silverlight and Windows/Windows Phone.

Telerik also introduced support for HTML5 and JavaScript in 2011 with its Kendo UI product.

In October 2014 Progress Software announced its acquisition of Telerik. On December 2014 the acquisition was completed.

Further support from Telerik is available on their support forums

Telerik Wikipedia Page

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"Value cannot be null. Parameter name: instance" error when trying to open telerik report

In my solution I have telerik reports and when trying to open them in Visual Studio 2010 designer, I am getting this error: Value cannot be null. Parameter name: instance Call Stack at System.ComponentModel.TypeDescriptor.AddAttributes(Object…
Ferid Š. Sejdović
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Kendo DatePicker fails validation for custom date format

I'm using Kendo DatePicker to edit a Date field being displayed in a Kendo Grid in my ASP.NET MVC 4 project. In order to have the DatePicker being used for the Date field use custom date format string, I updated the Date.cshtml file under the…
Amry
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Operation is not valid due to the current state of the object, when I select a dropdown list

I have radcombo boxes on aspx page, and when I select any option from then it gives error`Server Error in '/' Application. Operation is not valid due to the current state of the object. Description: An unhandled exception occurred during the…
G.S Bhangal
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Internal Server Error with httpHandlers section of web.config

I have an asp.net website using the form controls from Telerik. It's just moved to a new server but I keep getting a 500 Internal Server Error. Removing the httpHandlers section of the web.config makes server error go away, although then it…
DisgruntledGoat
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Telerik UI controls vs client-side UI with jQuery

I am trying decide on how I want to handle the UI for an external-facing web app. Because it is external, latency caused by page bloat could be an issue. I have used jQuery some in the past, and I am evaluating the Telerik controls now. I have seen…
nshaw
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How to unselect the grid record in kendoui

I am selecting the listview record on databound event. I have written the following code in databound var grid = $("#grid").data("kendoGrid"); grid.select(grid.tbody.find(">tr:first")); Now i want to deselect the grid dynamically. How…
Pa1
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Passing parameters to telerik asp.net mvc grid

I have a telerik asp.net mvc grid which needs to be populated based on the search criteria the user enters in separate text boxes. The grid is using ajax method to load itself initially as well as do paging. How can one pass the search parameters…
GlobalCompe
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How to get row index and cell index of row click kendo grid

I have added onchange event for kendo-ui grid. In that I am trying to get the ID value for that particular row. I have added an image column as first column in the grid. What I want is when the image is clicked, I want to open a image url. So,…
user2117983
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KendoUI Grid Decimal number column

I have a column for weight (in Kg). When the user clicks on it I need to enable them to be able to put in decimal number with 3 places. The problem I have is at the moment it only allows them to put it in to 2 places, but shows as 3 places. You can…
imperium2335
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Not enough storage is available to complete this operation

I have an asp page with Timer control. Timer control will trigger some method to execute. When this page is loaded, following error comes and timer control is not triggered to tick. I use IE9. There is no issues in FF and chrome. Error details are…
DineshNS
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DOM Exception: INVALID_CHARACTER_ERR (5)

In one aspx page which is running in IE9 got following script Error message. That page also having telerik controls. Does anybody have experince with this ? Message: DOM Exception: INVALID_CHARACTER_ERR (5) Line: 3422 Char: 8 Code: 0 URI:…
DineshNS
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how do I set a column to be the default sort column with Telerik RadGridView in Silverlight

I have a RadGridView control in a silverlight project and would like to have the grid come up sorted by the name column. I tried placing the attribute SortingState="Ascending" on the column definition for the name. I do not see any other attributes…
dna86
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Mark a field "Read Only" with Data Annotations

I am trying to make the ID field read only. It is an Identity field in the DB so the user will not be setting it. However they would like to see it. What am I missing as the below, when assigned to a DataForm still allows that value to be…
Refracted Paladin
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Telerik Reporting - can't export in Chrome when using SqlDataSource

EDIT 2: Using fiddler I was able to find out that I'm getting a 504 error, but it makes no sense to me how that could possibly be happening. EDIT: It seems to have something to do with connecting to SQL Server. I found I can export reports that…
BVernon
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Telerik and jquery

I'm working on an application I received from a client and they've used some telerik web controls. Telerik apparently includes its own version of jquery 1.3.2, while I'm using 1.4.1. I'm experiencing some weird javascript issues and I'd like to rule…
Chris
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