Hello,

 it seems there is some glitch in blazor telerik web report designer. So its not possible, to use stored procedure with parameters as datasource

lets have input parmeter in SP, expecting "some value", how to configure it for report? Only person, which is designin report, puts the value in as constant.
@Typ=1 

1) - web report designer doesnt remember sql connection type(Choose data connection): Shared vs EMBEDED. Always fall to shared, when reopening report(but was configured as embeded).

2) - web repor designer, not applying DEFAULT "Configure design time parameters" VALUES, and also "Configure data source parameters". They are correctly stored in TRDP, they are visible in sql wizzard steps, but ALWAYS passed as NULL to the datasource when OPENING report. 
= so report is than messed up/or datasource invalid. 

**NOT BUG, ENHANCEMET: 3) - allow filtering in SQL datasource wizard "Stored procedure". Normally there is hundred of SP and its pain to pick one. OR allow to write SP directly

4) - when using SQL datasource, its not getting filed values correctly, this command is executed:
exec sp_executesql N' SET FMTONLY OFF; SET FMTONLY ON;exec [dbo].[IMS_PRINT_GETSET] @Typ,@ID;',N'@Typ nvarchar(1),@ID int',@Typ=N'1',@ID=30
in sql wizzard, there is command: "exec [dbo].[IMS_PRINT_GETSET] @Typ,@ID;"
how to solve that?
You are not ALWAYS allowed to modify SP. just consume as DATASOURCE, so its NOT VALID.
IF 1=0 BEGIN
        SET FMTONLY OFF
    END

iam unable to use version 1007-its not compatibile in project with telerik.blazor 15.1 (conflict in some skia or document proccesing nugets), but its not the case.

example:
Video demonstrating(reopened existing report), all described points + profiler result.

telerik sends - WRONG:
exec sp_executesql N' SET FMTONLY OFF; SET FMTONLY ON;exec [dbo].[IMS_PRINT_GETSET] @Typ,@ID;',N'@Typ nvarchar(4000),@ID int',@Typ=NULL,@ID=NULL
telerik SHOULD send:
exec sp_executesql N' SET FMTONLY OFF; SET FMTONLY ON;exec [dbo].[IMS_PRINT_GETSET] @Typ,@ID;',N'@Typ nvarchar(4000),@ID int',@Typ=N'1',@ID=30

TSQL demo procedure(one procedure for multiple sources - real world usage):
create PROCEDURE [dbo].[IMS_PRINT_GETSET]
@Typ INT,@ID INT
AS
BEGIN
  SET NOCOUNT ON;

  --!!TELERIK BUGFIX, but you are NOT ALWAYS permited to modify SP!!:
   IF 1=0 BEGIN
        SET FMTONLY OFF
    END  

IF @Typ=2 BEGIN
SELECT TOP 500 * FROM vTabOrders_active
RETURN
END

IF @Typ=1 BEGIN
SELECT TOP 500 ID,CisloZakazky,Nazev,Poradi FROM TabXYZ
RETURN
END

END

Thanks, even for some hotfix ideas.