How to send send data over serial with respect to time in C#?

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1.00/5 (1 vote)

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.NET2.0

Hi all

I am sending and receiving text files over serial port in c# without any problem . But i want to send data according the memory size in text file "like sending 1 kb in 1 sec , next 1 kb in next second like that ".
I am working on this from long back didn't get the perfect solution till now

Here is my code

private void butSetFile_Click(object sender, EventArgs e)
     {
         this.openFileDialog1.ShowDialog();

         this.txtfile2.Text = this.openFileDialog1.FileName;


     }

     private void butSendFile_Click(object sender, EventArgs e)
     {

             if (serialPort1.IsOpen == false)
             {
                 this.serialPort1.Open();
             }

             serialPort1.Write(System.IO.File.ReadAllText(this.txtfile2.Text));

         }

What I have tried:

I tried StremReader function and Buffers also. But didn't get the result what i need can any one help me

i used this code also

List<string> list = new List<string>();
          using (StreamReader reader = new StreamReader(this.txtfile2.Text))
          {
              string line;
              while ((line = reader.ReadLine()) != null)
              {
                  list.Add(line); // Add to list.

}
}

Posted 8-Mar-17 0:18am

Member 12941572

Updated 8-Mar-17 0:55am

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Jochen Arndt · Answer 1 · 2017-03-08T00:55:00

Just read the file into a string. Then you can send 1 KB portions by using SubString(blockNumber * 1024, 1024) where blockNumber is incremented after writing each block until all blocks has been send.

Program flow:

Global objects:

C#

string buffer;
int blockNumber = -1;

Set File / click send file:

C#

buffer = System.IO.File.ReadAllText(this.openFileDialog1.FileName);
if (!buffer.IsNullOrEmpty())
{
    if (serialPort1.IsOpen == false)
    {
        this.serialPort1.Open();
    }
    blockNumber = 0;
    // start timer
}

Timer event function:

C#

if (blockNumber >= 0)
{
    string blockString = buffer.SubString(blockNumber * 1024, 1024);
    // Empty if all data has been send
    if (!blockString.IsNullOrEmpty())
    {
        serialPort1.Write(blockString);
        blockNumber++;
    }
    else
    //OR: if (blockString.IsNullOrEmpty() || blockString.Length() < 1024)
    {
        blockNumber = -1;
        buffer = "";
        // stop timer
    }
}