using System.Text.RegularExpressions;
public static void Main()
string message = "me.jpg;screenshot-1.png;materialize-v0.95.3.zip;jQuery-Multiple-Select-Plugin-For-Bootstrap-Bootstrap-Multiselect.zip;";
var pattern = new Regex("");
if(pattern.IsMatch(message))
newmessage = Regex.Replace(message, "me.jpg;screenshot-1.png;", string.Empty);
Console.WriteLine(newmessage);