Novice C#string Class common functions of learning 2018.08.04

ToLower () is used to change the string to lowercase, note the immutable nature of the string, and need to reassign the value to another string variable.

            s = S.tolower (); // strings are immutable and need to be re-assigned after conversion, not just s. ToLower ();

This allows the user's input to be case insensitive, such as a captcha.

ToUpper () is used to capitalize all strings, similar to the above.

Trim () can be used to remove spaces on both sides.

            string "   a b c  ";             = S1. Trim (); // used to remove spaces on both sides of a string            Console.WriteLine (S1);

Equals () is used to compare strings, which contain multiple overloaded methods.

            string " Admin " ;             string " Admin " ;             // the comparison of ignoring case is StringComparison.OrdinalIgnoreCase            Console.WriteLine (S1. Equals (s2,stringcomparison.ordinal));

String. Format () to generate a new string with placeholders and formats.

            string string. Format (" I call {0}, I {1} years old ""www");            Console.WriteLine (s1);

2018.08.04

Novice C#string Class common functions of learning 2018.08.04