Why vs2017 code introduced in Microsoft. Reporting. WebForms prompt namespace does not exist,
I checked the DLL has introduced successful

 
Using System; 
Using System. The Web; 
Using System. Web. UI. 
Using System. Web. UI. WebControls; 
using System.Collections.Generic; 

Using Microsoft. Reporting. WebForms.//the error code hinting 

CodePudding user response:

Is this
Microsoft, with WebForms
Only this package on NuGet