What kind of question is that? Can you be more precise in your questions? I will have to ban you if you continue to post such questions! Thanks for your cooperation. I have reviewed your profiles and discover you have various identities and post questions which are irrelevent and i might say is stupid. So i ask of you to stop posting such questions. Veerasamy S/O Muthu-- Chief System Analyser World Informatics

hi all!i have a code like this.The port.Read(4) mean that i read 4 bytes from serial port..i had convert from byte [] to char [] and now i want to convert from char [] to float? mean that my final answer must be in float type.How can i do it?Thanks! private char [] Read_Data = new char[4]; { Read_Data = Encoding.ASCII.GetChars(port.Read(4)); }

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the 1st line mean assign the time(second) in the my computer to float time and the 2nd mean add point to the graph with X-axis is time and Y-axis is power..So basically this AddPoint is add the point to the point to the graph

Actually this timer is act like a stop watch in my program..So when everytime i press start button it will start run from 0 seconds until i press stop button to stop it.Now the problem is when i press the start button it start according to my computer time(second). float time =(float)DateTime.Now.Second ; xyGraphControl1.AddPoint(time, power); long StartClock; private void StartButton_Click(objectsender,System.EventArgse) { timer1.Start(); // get the exact hour started in milliseconds StartClock = DateTime.Now.Ticks; xyGraphControl1.Reset(); } Thank very much!

Hi all!I have these two lines of codes in my program: float time = (float)DateTime.Now.Second; xyGraphControl1.AddPoint(time,power); The result of the codes is that the timer starts at the same second as the clock in my computer. How am I going to force the timer to always and only start at 0 second? Thank you very much!

Hi all!i am using microsoft visual studio.net 2003.i have create a class for communication with serial port via RS-232.It contains read and write function.i run this in the console application.Class 1 is all the function and class 2 is my MAIN.i use Main to call the read and write function.Can someone please please help me how i can read unlimited bytes?How to call the Public MemoryStream Read(int bufSize) to my MAIN?I try it so many time but still fail to do it..Please please help me..Thanks a lot! This is my Class 1 using System; using System.Runtime.InteropServices; using System.IO; using System.Text; using System.Globalization; using System.Threading; namespace yong { public class port { /*-- Definition of variables by Programmer --*/ /*-- Setting win32 API constants --*/ private const uint GENERIC_READ = 0x80000000; private const uint GENERIC_WRITE = 0x40000000; private const int CREATE_ALWAYS = 2; private const int INVALID_HANDLE_VALUE = -1; /*-- End ofSetting win32 API constants --*/ public int PortNum = 1; //-------------Delaring of Port number to 1 public int BaudRate = 9600; //---------Set BaudRate to 9600 public byte ByteSize = 8; //-----------Set ByteSize to 8 public byte Parity = 0; //-------------0-4 = no,odd,even,mark,space public byte StopBits = 0; //-----------0,1,2 = 1, 1.5, 2 public int ReadTimeout = 1500; //------Set TimeOut to 1500 private int hComm = -1; //-------------Declaring of comm port win32 file handle public bool Opened = false; //---------Declaring of Opened and set to false /*-- End of Definition of variables by Programmer --*/ [StructLayout(LayoutKind.Sequential)] public struct DCB { /*-- taken from c struct in platform sdk --*/ public int DCBlength; //-----------Sizeof(DCB) public int BaudRate; //------------Current baud rate public uint flags; //--------------Flags public ushort wReserved; //--------Not currently used public ushort XonLim; //-----------Transmit XON threshold public ushort XoffLim; //----------Transmit XOFF threshold public byte ByteSize; //-----------Number of bits/byte, 4-8 public byte Parity; //-------------0-4 = no,odd,even,mark,space public byte StopBits; //-----------0,1,2 = 1, 1.5, 2 public char XonChar; //------------Tx and Rx XON character public char XoffChar; //-----------Tx and Rx XOFF character public char ErrorChar; //----------Error replacement character public char EofChar; //------------End o

Hi!Thanks!This code no problem but how am i going to call it to my Main,please?Thanks again!

Hi all!i have a read function here.I face a problem,it just can read limited byte only..Can somebody help me?Where to edit to make it read more bytes?Thank so much! public byte[] Read(int NumBytes) { byte[] BufBytes; //------Declaring of dynamic Array byte[] OutBytes; //------Declaring of dynamic Array BufBytes = new byte[NumBytes]; //------Setting the Array Size to NumBytes( From parameter ) /*-- Check Port is Open --*/ if( hComm != INVALID_HANDLE_VALUE ) { OVERLAPPED ovlCommPort = new OVERLAPPED(); //------Declaring of ovlCommport int BytesRead = 0; //------Declaring of BytesRead and set to 0 ReadFile(hComm, BufBytes, NumBytes, ref BytesRead, ref ovlCommPort); //------Get data from RS232 OutBytes = new byte[BytesRead];//------Setting the size of Array to BytesRead Array.Copy(BufBytes, OutBytes, BytesRead); //------Copy previous array data to new array data for preventing data loss return OutBytes; //------Return the GET data }/*-- End of Check Port is Open --*/ return null; //------Return null( nothing ) }/*-- End of Function Read --*/

Hi!i have no idea how to write the classes.May you show me how to write the classes?thanks in advance!

Hi all!How to capture data from a device and at the same time plot a line chat..Is that i must use ActiveX Control?Any suggestion for me.Thanks!

code for how to make the OK button function,mean when i select any of the radio button and i click the Ok button.it will send the value(value for the radio button) out.Thanks!

hi all!i have a form which has a group box and inside the group box have five radio buttons(one is selected by default).At the same time it also have a "OK" button at the form.So when i click on "Ok" button it will sent the value out..Does anybody can provide my some guideline or code..Thanks in advance!

ok thanks!i will try to do it!

thanks for your advice..i think using thread is better...may you help me to edit my source code using thread?i am just a very new beginner in c#..I need your help a lot.Thank so much!

I am not so familliar with threads methods.May you try to edit for me?thank a lot!How about i use While loop and at the same time inside the While loop contain a if-else loop?