public void SNMPtrans() { try { List <string> list_OutData = new List <string>(); string ReadOne; string OID = ""; string VT = ""; using (StreamReader sr = File.OpenText(TextBox_SNMPsource.Text)) { while ((ReadOne = sr.ReadLine()) != null) { if (ReadOne.IndexOf("oid") > -1) { int FirstDot = ReadOne.IndexOf("."); OID = ReadOne.Substring(FirstDot, ReadOne.Length - 6); if ((ReadOne = sr.ReadLine()).IndexOf("valueType") > -1) { if (ReadOne.IndexOf("String") > -1) { VT = "STRING"; } else if (ReadOne.IndexOf("TimeTicks") > -1) { VT = "Timeticks"; } else if (ReadOne.IndexOf("Integer") > -1) { VT = "INTEGER"; } else if (ReadOne.IndexOf("Gauge") > -1) { VT = "Gauge32"; } else { VT = ReadOne.Substring((ReadOne.IndexOf("=") + 2), ReadOne.Length - 12); } } list_OutData.Add($"{OID} = {VT}: {FakeValue(VT)}"); i_counToStr++; } } sr.Dispose(); } string TargetFolder = TextBox_SNMPtarget.Text.Substring(0, TextBox_SNMPtarget.Text.LastIndexOf(@"\")); if (!Directory.Exists(TargetFolder)) { ; } Directory.CreateDirectory(TargetFolder); StreamWriter sw = new StreamWriter(TextBox_SNMPtarget.Text); foreach (string everyOne in list_OutData) { sw.WriteLine(everyOne, true); } sw.Dispose(); } catch (Exception ex) { MessageBox.Show(ex.Message); } }