public string filtrele(string Input)
{string data = Input.Trim();
data = data.Replace(">", "");
data = data.Replace("<", "");
data = data.Replace(">", "");
data = data.Replace("<", "");
data = data.Replace("--", "");
data = data.Replace("'", "");
data = data.Replace(";", "");
data = data.Replace("=", "");
data = data.Replace("char ", "");
data = data.Replace("delete ", "");
data = data.Replace("DELETE ", "");
data = data.Replace("insert ", "");
data = data.Replace("INSERT ", "");
data = data.Replace("update ", "");
data = data.Replace("UPDATE ", "");
data = data.Replace("select ", "");
data = data.Replace("SELECT ", "");
data = data.Replace("drop ", "");
data = data.Replace("DROP ", "");
data = data.Replace("truncate ", "");
data = data.Replace("TRUNCATE ", "");
data = data.Replace("union", "");
data = data.Replace("UNION ", "");
data = data.Replace("script ", "");
data = data.Replace("SCRIPT ", "");return data;
}