In my previous tutorials, I’d explained the difference between String and StringBuilder, difference between executereader executenonquery and executescalar, difference between dataset datareader dataadapter and dataview and other similar tutorials on Difference, Asp.net here. In the .NET Framework, at least in the C# language, we have available two types of string class, they are String and string. So, many developers are confused about both types of classes and want to know the difference between them. So, here in this tutorial I’ll explain the difference between String and string in asp.net c# and also explain which one is best and appropriate to use among them.