How to include quotes in a string

I have a string "I want to learn "c#"". How can I include the quotes before and after c#?

Escape them with backslashes.

"I want to learn \"C#\""

As well as escaping quotes with backslashes, also see SO question 2911073 which explains how you could alternatively use double-quoting in a @-prefixed string:

string msg = @"I want to learn ""c#""";

I use:

var value = "'Field1','Field2','Field3'".Replace("'", "\""); 

as opposed to the equivalent

var value = "\"Field1\",\"Field2\",\"Field3\"";

Because the former has far less noise than the latter, making it easier to see typo's etc.

I use it a lot in unit tests.

string str = @"""Hi, "" I am programmer";

OUTPUT - "Hi, " I am programmer