how to add a variable to a string in C# code example

Example 1: insert variables into string c#

string data = "Mr. Rogers";
var str = $"Hello {data}, how are you doing?";

Example 2: insert variables into a string C#

// For Console.WriteLine() and Console.Write() do...

string var0 = "one";
string var1 = "two";
Console.WriteLine("{0} and {1}", var0, var1);

/* Outputs:

one and two