private void btnOK_Click(object sender, EventArgs e)
{
switch (btnOK.Tag.ToString())
{
case "OK":
fileTransfer.DataStream = new FileStream(txtFilePath.Text, FileMode.Create, FileAccess.Write);
fileTransfer.Accept();
btnCancel.Visible = false;
lblSize.Text = "Waiting to start...";
btnOK.Text = "Abort Transfer";
btnOK.Tag = "ABORT";
break;
case "ABORT":
fileTransfer.Abort();
btnOK.Text = "Close";
btnOK.Tag = "CLOSE";
break;
case "OPENFILE":
Process.Start(txtFilePath.Text);
Close();
break;
case "CLOSE":
Close();
break;
}
}