using System; public class Class1 { public static void Main(string[] strings) { char[] cSpecialChars = { ' ', ',', '_' }; string s = "_This is, a str ing"; Console.WriteLine(RemoveSpecialChars(s, cSpecialChars)); } public static string RemoveSpecialChars(string sInput,char[] cTargets) { string sOutput = sInput; foreach (char c in cTargets) { for (; ; ) { int nOffset = sOutput.IndexOf(c); if (nOffset == -1) { break; } string sBefore = sOutput.Substring(0, nOffset); string sAfter = sOutput.Substring(nOffset + 1); sOutput = sBefore + sAfter; } } return sOutput; } }