C # TCP Charging pile parameter setting tool writing summary

1. Wait for the client to connect, catch{} do not write exception processing, or error;
2. Manipulate other controls in the thread to use the delegate or cause a conflict; (or new thread)

The client on the connection is displayed in the list, and the        delegate void Setlistboxcallback (String str) is handled across the thread delegate;        public void Setlistbox (String str)        {            if (listboxclient.invokerequired)            {                Setlistboxcallback Setlistcallback = new Setlistboxcallback (setlistbox);                Listboxclient.invoke (Setlistcallback, str);            }            else            {                listBoxClient.Items.Add (str);            }        }

3. For help, use the HelpProvider of the platform (not resolved), you can use the KeyDown () event.

   if (E.KEYCODE==KEYS.F1)            {           System.Diagnostics.Process.Start ("Iexplore.exe", strpath);            }

4.CRC16 Check, Modbus low in front, high in the rear

Public byte[] Crc16_c (byte[] data)
{
BYTE Crc16lo;
BYTE Crc16hi; CRC Register
BYTE CL;       BYTE CH; Polynomial code &ha001
BYTE Savehi; BYTE Savelo;
Byte[] Tmpdata;
int I;
int Flag;
Crc16lo = 0xFF;
Crc16hi = 0xFF;
CL = 0x01;
CH = 0xA0;
Tmpdata = data;
for (int i = 0; i < tmpdata.length; i++)
{
Crc16lo = (byte) (crc16lo ^ tmpdata[i]); Each data is different from the CRC register or
for (Flag = 0; Flag <= 7; flag++)
{
Savehi = Crc16hi;
Savelo = Crc16lo;
Crc16hi = (byte) (Crc16hi >> 1); High-right Shift one
Crc16lo = (byte) (Crc16lo >> 1); Low right Shift one
if ((Savehi & 0x01) = = 0x01)//If the last digit of the high byte is 1
{
Crc16lo = (byte) (Crc16lo | 0x80); The lower byte is shifted right and the front 1
}//otherwise auto-fill 0
if ((Savelo & 0x01) = = 0x01)//If the LSB is 1, then the polynomial code is XOR-
{
Crc16hi = (byte) (crc16hi ^ CH);
Crc16lo = (byte) (crc16lo ^ CL);
}
}
}
byte[] Returndata = new byte[2];
Returndata[0] = Crc16lo; CRC Low
RETURNDATA[1] = Crc16hi; CRC High
return returndata;
}

5.TCP send a message to the next machine, sent a hexadecimal byte array, you need to send the string into hexadecimal byte data.
6. Because of a multi-client connection, use a timer loop to scan for connection access.
7. Use regular validation when verifying whether it is a number or floating-point.

  string regexftext = @ "^ (-?\d+) (\.\d+)? $";
Regex regexfloat = new Regex (Regexftext, regexoptions.none);
Regexfloat. IsMatch (Straveprice.trim ();

C # TCP Charging pile parameter setting tool writing summary