public static string VietnameseSigns(string str)
{
str = str.Trim();
var charsToRemove = new string[] { "@", ",", ".", ";", "'", "/", "\\", "\"", "[", "]", "#", "+", "?", "-" };
foreach (var c in charsToRemove)
{
str = str.Replace(c, string.Empty);
}
const string FindText = "áàảãạâấầẩẫậăắằẳẵặđéèẻẽẹêếềểễệíìỉĩịóòỏõọôốồổỗộơớờởỡợúùủũụưứừửữựýỳỷỹỵÁÀẢÃẠÂẤẦẨẪẬĂẮẰẲẴẶĐÉÈẺẼẸÊẾỀỂỄỆÍÌỈĨỊÓÒỎÕỌÔỐỒỔỖỘƠỚỜỞỠỢÚÙỦŨỤƯỨỪỬỮỰÝỲỶỸỴ ";
const string ReplText = "aaaaaaaaaaaaaaaaadeeeeeeeeeeeiiiiiooooooooooooooooouuuuuuuuuuuyyyyyAAAAAAAAAAAAAAAAADEEEEEEEEEEEIIIIIOOOOOOOOOOOOOOOOOUUUUUUUUUUUYYYYY-";
int index = -1;
char[] arrChar = FindText.ToCharArray();
while ((index = str.IndexOfAny(arrChar)) != -1)
{
int index2 = FindText.IndexOf(str[index]);
str = str.Replace(str[index], ReplText[index2]);
}
return(str);
}
