Reporting version 2019 R3 SP1 (13.2.19.1213)
In the Standalone Designer, with a .trdp file open, you can see the fields from the data source in the Data Explorer. For me, these come from a stored procedure.
If change the stored procedure to add/remove columns, then click the "Refresh" icon at the top of the Data Explorer, nothing happens; Data Explorer still shows the old items. Closing/re-opening the Reporting tool will fresh the Data Explorer list. You should not have to close/re-open. Isn't that what the "Refresh" button is for?

Hello
I have issue when I use report parameters programmatically.
When I chose Category return 3 record it show 3 similar table
I want when I chose Category return 3 record it only show 1 table.
Thanks
Thien

Good Evening All,
Hope you are keeping well in the current climate.
I have a form with a report viewer on that am i am trying to set the report that viewer will display at runtime. I have the following code to do this.
Dim ReportViewer As New FrmReportViewerDim NotificationReport As New rptNotificationPrintOutDim strCommand As String = "SELECT tblNotifications.URN, tblNotifications.Sender, tblNotifications.Reciever, tblNotifications.Date_Sent, " &"tblNotifications.Time_Sent, tblNotifications.Title, tblNotifications.Details, tblNotifications.Notification_Type, tblusernotifications.status " &"FROM tblNotifications INNER JOIN tblUserNotifications On tblNotifications.URN = tblUserNotifications.Notification_ID WHERE " &"tblUserNotifications.User_ID = '" & strUserID & "'"Dim sqlReportDataSource As New SqlDataSource(strCommand, strConnectionString)NotificationReport.DataSource = sqlReportDataSourceDim DisplayReport As New InstanceReportSourceDisplayReport.ReportDocument = NotificationReportReportViewer.ReportViewer1.ReportSource = DisplayReportReportViewer.Show()
This code is displaying the report viewer form however it is not loading and displaying the report.
Thanks in advanced for the assistance
Frosty

Hi,
I have been following https://docs.telerik.com/reporting/web-report-designer-setup-in-net-core to add the web report designer to an aspnetcore project both on .net core 2.1 and 3.1 and I am getting javascript errors because of these files:
<script src="..../js/telerikReportViewer"></script>
<script src="..../js/webReportDesigner"></script>
The article does not explain where are these references and how they work. And also why do you have to register services in a different class instead of the ConfigureServices method of Startup.cs?
I'm trying to set things up for the first time in a .Net Core ASP 3.1 Application.
My ReportsController appears to be recognized properly (the constructor is called with the IReportServiceConfiguration) and the client attempts to call:
api/reports/resources/js/telerikReportViewer (with a ?_=<number> on the end)
But i'm getting this error:
"Message": "An error has occurred.","ExceptionMessage": "An item with the same key has already been added. Key: Cache-Control"
Full:
{
"Message": "An error has occurred.","ExceptionMessage": "An item with the same key has already been added. Key: Cache-Control","ExceptionType": "System.ArgumentException","StackTrace": " at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)\r\n at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)\r\n at Microsoft.AspNetCore.HttpSys.Internal.HeaderCollection.Add(String key, StringValues value)\r\n at Telerik.Reporting.Services.AspNetCore.ReportsControllerBase.GetResourceCore(String folder, String resourceName, Type type)\r\n at Telerik.Reporting.Services.AspNetCore.ReportsControllerBase.GetResource(String folder, String resourceName)\r\n at lambda_method(Closure , Object , Object[] )\r\n at Microsoft.Extensions.Internal.ObjectMethodExecutor.Execute(Object target, Object[] parameters)\r\n at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.SyncActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)\r\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeActionMethodAsync()\r\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)\r\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeNextActionFilterAsync()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)\r\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)\r\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextExceptionFilterAsync>g__Awaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)"
}

hello
i want to Displaying data with alternating-style rows and i used your code RowNumber()%2 = 1 or 0 in conditional formatting but is it not working for me!
i show you in this video
please help me
Hi,
I use a multi-value Parameter to select a subset of data in an IN clause.
On SQL Server if the User selects a lot/all of the possible values, this occasionally leads to the following error:
Too many parameters were provided in this RPC request. The maximum is 2100.
Since SQL Server does not support arrays as parameters, I assume the reporting engine does some magic to rewrite the parameters to
IN(@p1, @p2, @p3 ...)
Is there a way to workaround the problem, for example by using a temporary table with the parameter values?
Regards
Erwin
Is it possible to display server timezone in this format "DD-Mmm-YYYY hh:mm:ss timezone" in Telerik Reports
For Example -
Example 1: "13-May-2020 03:30:53 AM
EST".
Example 2: "13-May-2020 12:30:53 AM PST".
Example 3: "13-May-2020 01:30:53 PM IST".
Hello,
We have a web application (front end - Angular and back end - .Net c#) that will work on Cloud.
We are using Telerik report designer to create reports. Currently user can view designed Telerik reports inside application through telerik Angular report viewer.
What we want to do: we want user (not developer) to be able to change Telerik report inside application and save them for later use.
We know that Telerik Web Report Designer allows us to customize reports inside web application.
But there are no resources or documentations on how to implement it in an Angular application.
we wonder if anyone has tried Web Report Designer on Angular applications before and appreciate
if they can share their knowledge/experience.
Thank you