I have designed a report in vs 2015 and it looks like the following
And now I have installed vs 2017 installed in my machine and then while I want to open the rdlc file it opened as XML. and then I searched in google and I installed the missing Microsoft report viewer for 2017 and then it converted automatically and opened in design mode. Perfect.
But the problem is while I am going to run the project it gives me the following error.
Anyone, please help me.