how to insert \ in front of symbols in a string in c# code example

Example 1: c# insert character into string at position

//Insert method returns a copy, it does not alter the string since strings are immutable
string str = "abc";
str = str.Insert(2, "XYZ"); //str == "abXYZc"

Example 2: string.insert c#

public string Insert(int Indexvalue, string value)