尝试从库向主项目添加文件时出现错误？

Question

I have created a library in c# and add this library to my project but I can't configure how to use the library file to the main project

I have tried the using line

using UserManagment.helper;

I am getting the error at UserManagment.helper while my original project is HPS. the error is listed below :

Error 2 The type or namespace name 'UserManagment' could not be found (are you missing a using directive or an assembly reference?) C:\\Users\\Ayesha\\documents\\visual studio 2013\\Projects\\HPS\\HPS\\GUI\\AdminProfile.cs 12 7 HPS

I expect that the UserManagment .helper will successfully be used by the project and declared in my required file

Answer 1

As discussed in the comments, you need to add the .dll as a reference to the project then only you will be able to access them in your project.

In Solution Explorer, right-click on the References or Dependencies node and choose Add Reference. You can also right-click on the project node and select Add > Reference.

Use the browse button to locate the specific .dll and add the same to the project. Read more about this option here