CSHARP

c# String.Concat()

string first = "hello_";
string second = "world";
/* Unite multiple strings to one new string*/

string third = String.Concat(first, second);
// string third will be now "hello_world"

c# concatenate strings

Console.WriteLine ("text"+Var);

c# Add or Concatenate Strings In C#

string str1 = "ppp";  
string strRes = str1.Insert(2, "bbb");  
Console.WriteLine(strRes.ToString());