Unable To Retrieve The @@Error Code In Stored Procedure

Hi All,

In my application on click of Delete button, actually I am not deleting the record. I am just updating the flag. But before updating the record I just want to know the dependency of the record ie. if the record I am deleting(internally updating) exists any where in the dependent tables, it should warn the user with message that it is available in the child table, so it can not be deleted. I want to check the dependency dynamically. For that I have written the following procedure. But it is updating in both cases.

CREATE proc SProc_DeleteRecord
@TableName varchar(50),
@DeleteCondition nVarchar(200)
As
Begin
Begin Transaction
Declare @DelString nvarchar(4000)
set @DelString = 'Delete from ' + @TableName + ' where ' + @DeleteCondition
execute sp_executeSql @DelString
RollBack Transaction --because i donot want to delete the record in any case
If @@Error <> 0
Begin
select '1'
End
Else
Begin
Declare @SQLString nvarchar(4000)
set @SQLString = 'Update ' + @TableName + ' set DeletedFlag=1 where ' + @DeleteCondition
execute sp_executeSql @SQLString
select '0'
End

End

Thanks & Regards

Bijay