C# newb question

Question

Hi all I am new here. I have been using C# in ASP.NET apps for about a year.
I am wondering though, what is the difference between using String and string in declaring a variable. I have seen them both used and VS uses different color schemes for each. Are they 100% interchangeable?

Kirtan Patel · Answer

string is Alias of System.String like below table all data type int string are just alias string System.String sbyte System.SByte byte System.Byte short System.Int16 ushort System.UInt16 int System.Int32 uint System.UInt32 long System.Int64 ulong System.UInt64 char System.Char float System.Single double System.Double bool System.Boolean decimal System.Decimal

bill · Answer

Thank you for the response Mahesh. So I guess to further clarify my question about declaring a variable... are both of these uses acceptable? Any pros or cons? protected void someFunction() { String strName = Mahesh ; // do something } protected void someFunction() { string strName = Mahesh ; // do something }

Mahesh Chand · Answer

string is a data type in .NET and the String class represents a string data type. It's same as int is a data type in C# and Integer class represents an int.