C# TrimStart with string parameter -

i'm looking string extension methods trimstart() , trimend() accept string parameter.

i build 1 myself i'm interested in seeing how other people things.

how can done?

trimstart:

public static string trimstart(this string target, string trimchars) {     return target.trimstart(trimchars.tochararray()); } 

trimend:

public static string trimend(this string target, string trimchars) {     return target.trimend(trimchars.tochararray()); } 

note function trim of characters in trimchars start/end of target, e.g. "foobar;'@".trimend(";@'") return "foobar"

if instead intention trim occurrences of (exactly matching) string, should use following:

trimstart:

public static string trimstart(this string target, string trimstring) {     string result = target;     while (result.startswith(trimstring))     {         result = result.substring(trimstring.length);     }      return result; } 

trimend:

public static string trimend(this string target, string trimstring) {     string result = target;     while (result.endswith(trimstring))     {         result = result.substring(0, result.length - trimstring.length);     }      return result; }