Hello guys,
I already solved it!!
I just had to put some lines between this:
this.Dispatcher.Invoke(() =>
{
});
Just for being clear, I'll put the complete program below, you can use (CTRL + F) to find the place where I put the sentences:
<pre>using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Timers;
using System.IO.Ports;
using Modbus_Poll_CS;
using WPF_Modbus;
using System.Windows.Threading;
using System.Threading.Tasks;
using System.Threading;
namespace WPF_Modbus
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
//delegate void UpdateThread(int state);
//Thread th1;
modbus mb = new modbus();
SerialPort sp = new SerialPort();
System.Timers.Timer timer = new System.Timers.Timer();
string dataType;
bool isPolling = false;
int pollCount;
#region GUI Delegate Declarations
public delegate void GUIDelegate(string paramString);
public delegate void GUIClear();
public delegate void GUIStatus(string paramString);
#endregion
public MainWindow()
{
InitializeComponent();
LoadListboxes();
timer.Elapsed += new ElapsedEventHandler(timer_Elapsed);
}
#region Load Listboxes
private void LoadListboxes()
{
//Three to load - ports, baudrates, datetype. Also set default textbox values:
//1) Available Ports:
string[] ports = SerialPort.GetPortNames();
foreach (string port in ports)
{
lstPorts.Items.Add(port);
}
lstPorts.SelectedIndex = 0;
//2) Baudrates:
string[] baudrates = { "9600", "19200", "38400", "57600", "115200", "230400" };
foreach (string baudrate in baudrates)
{
lstBaudrate.Items.Add(baudrate);
}
lstBaudrate.SelectedIndex = 0;
//3) Datatype:
string[] dataTypes = { "Float", "Hexadecimal", "Decimal", "Reverse" };
foreach (string dataType in dataTypes)
{
lstDataType.Items.Add(dataType);
}
lstDataType.SelectedIndex = 0;
//Textbox defaults:
txtRegisterQty.Text = "20";
txtSampleRate.Text = "1000";
txtSlaveID.Text = "1";
txtStartAddr.Text = "1001";
}
#endregion
#region Delegate Functions
public void DoGUIClear()
{
if (!Application.Current.Dispatcher.CheckAccess())
{
GUIClear delegateMethod = new GUIClear(this.DoGUIClear);
Dispatcher.Invoke(delegateMethod);
}
else
this.lstRegisterValues.Items.Clear();
}
public void DoGUIStatus(string paramString)
{
//if (this.InvokeRequired)
if (!Application.Current.Dispatcher.CheckAccess())
{
GUIStatus delegateMethod = new GUIStatus(this.DoGUIStatus);
Dispatcher.Invoke(delegateMethod, new object[] { paramString });
}
else
this.lblStatus.Content = paramString;
}
public void DoGUIUpdate(string paramString)
{
//if (this.InvokeRequired)
if (!Application.Current.Dispatcher.CheckAccess())
{
GUIDelegate delegateMethod = new GUIDelegate(this.DoGUIUpdate);
Dispatcher.Invoke(delegateMethod, new object[] { paramString });
}
else
this.lstRegisterValues.Items.Add(paramString);
}
#endregion
#region Timer Elapsed Event Handler
void timer_Elapsed(object sender, ElapsedEventArgs e)
{
PollFunction();
}
#endregion
#region Start and Stop Procedures
private void StartPoll()
{
pollCount = 0;
//Open COM port using provided settings:
if (mb.Open(lstPorts.SelectedItem.ToString(), Convert.ToInt32(lstBaudrate.SelectedItem.ToString()), 8, Parity.None, StopBits.One))
{
//Disable double starts:
btnStart.IsEnabled = false;
dataType = lstDataType.SelectedItem.ToString();
//Set polling flag:
isPolling = true;
//Start timer using provided values:
timer.AutoReset = true;
if (txtSampleRate.Text != "")
timer.Interval = Convert.ToDouble(txtSampleRate.Text);
else
timer.Interval = 1000;
timer.Start();
}
lblStatus.Content = mb.modbusStatus;
}
private void StopPoll()
{
//Stop timer and close COM port:
isPolling = false;
timer.Stop();
mb.Close();
btnStart.IsEnabled = true;
lblStatus.Content = mb.modbusStatus;
}
private void btnStart_Click(object sender, EventArgs e)
{
StartPoll();
}
private void btnStop_Click(object sender, EventArgs e)
{
StopPoll();
}
#endregion
#region Poll Function
private void PollFunction()
{
//Update GUI:
DoGUIClear();
//MessageBox.Show("ho");
pollCount++;
DoGUIStatus("Poll count: " + pollCount.ToString());
//Create array to accept read values:
short[] values = new short[Convert.ToInt32(20)];
ushort pollStart;
ushort pollLength;
this.Dispatcher.Invoke(() =>
{
if (txtStartAddr.Text != "")
pollStart = Convert.ToUInt16(txtSampleRate.Text);
else
pollStart = 0;
if (txtRegisterQty.Text != "")
pollLength = Convert.ToUInt16(20);
else
pollLength = 20;
//Read registers and display data in desired format:
try
{
while (!mb.SendFc3(Convert.ToByte(txtSlaveID.Text), pollStart, pollLength, ref values)) ;
}
catch (Exception err)
{
DoGUIStatus("Error in modbus read: " + err.Message);
}
string itemString;
switch (dataType)
{
case "Decimal":
for (int i = 0; i < pollLength; i++)
{
itemString = "[" + Convert.ToString(pollStart + i + 40001) + "] , MB[" +
Convert.ToString(pollStart + i) + "] = " + values[i].ToString();
DoGUIUpdate(itemString);
}
break;
case "Hexadecimal":
for (int i = 0; i < pollLength; i++)
{
itemString = "[" + Convert.ToString(pollStart + i + 40001) + "] , MB[" +
Convert.ToString(pollStart + i) + "] = " + values[i].ToString("X");
DoGUIUpdate(itemString);
}
break;
case "Float":
for (int i = 0; i < (pollLength / 2); i++)
{
int intValue = (int)values[2 * i];
intValue <<= 16;
intValue += (int)values[2 * i + 1];
itemString = "[" + Convert.ToString(pollStart + 2 * i + 40001) + "] , MB[" +
Convert.ToString(pollStart + 2 * i) + "] = " +
(BitConverter.ToSingle(BitConverter.GetBytes(intValue), 0)).ToString();
DoGUIUpdate(itemString);
}
break;
case "Reverse":
for (int i = 0; i < (pollLength / 2); i++)
{
int intValue = (int)values[2 * i + 1];
intValue <<= 16;
intValue += (int)values[2 * i];
itemString = "[" + Convert.ToString(pollStart + 2 * i + 40001) + "] , MB[" +
Convert.ToString(pollStart + 2 * i) + "] = " +
(BitConverter.ToSingle(BitConverter.GetBytes(intValue), 0)).ToString();
DoGUIUpdate(itemString);
}
break;
}
});
}
#endregion
#region Data Type Event Handler
private void lstDataType_SelectionChanged(object sender, EventArgs e)
{
//restart the data poll if datatype is changed during the process:
if (isPolling)
{
StopPoll();
dataType = lstDataType.SelectedItem.ToString();
StartPoll();
}
}
#endregion
}
}
Thank you very much