尝试创建一个将读取文件值并返回它的 DLL

Question

I am trying to create a DLL in any language (using Visual Studio is preferred), that will read a value from a file (file will only have that single value) and then return it in the function. I am not very familiar with DLLs and I'm not quite sure how they work, but I need this for my project, any help would be hugely appreciated. Thanks

Answer 1

This example will be in C# (Part of Visual Studio Community Edition)

Create a class library project & include the following method in your class:

public static string getText(string filePath) 
{
     using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read))
     {
         using (TextReader tr = new StreamReader(fs))
         {
             return tr.ReadToEnd();
         }
     }
}