私は ObservableCollection である Item ソースを持っていますが、それを更新するたびに。アイテム ソースを削除して返すまで、プログラムはアイテム ソースを表示しません。
私がそれをしているときに、GUIが動かなくなりました。
private ObservableCollection<DataForTable> _dataForTableRecieved; // a list to update the gui table.
private void initVariables()
{
_dataForTableRecieved = new ObservableCollection<DataForTable>();
ThreadGui = new Thread(new ThreadStart(barak));
ThreadGui.IsBackground = true;
ThreadGui.Start();
}
private void b()
{
dataGridData.ItemsSource = "";
dataGridData.ItemsSource = DataForTableRecieved;
if (dataGridData.Columns.Count > 5)
{
dataGridData.Columns[5].Visibility = Visibility.Collapsed; // column data.
}
}
/// <summary>
/// this method update the datagrid data table with the correct data.
/// </summary>
private void updateTablesOfGui()
{
DataForTable dt = new DataForTable();
if (_QAllMessagesRecieved.Count > 0) // check recieve data
{
_indexDataRecieved++;
dt.LineNumber = (int)_indexDataRecieved;
DateTime _Time = _QAllDateTimeMessgesRecieved.Dequeue();
dt.Time = _Time.ToShortDateString() + " " + _Time.ToLongTimeString() + "." + _Time.Millisecond.ToString();
dt.RX_TX = "RX";
byte[] dataArr = _QAllMessagesRecieved.Dequeue();
dt.MsgType = _pd.ParseMeesage(dataArr, _toCheckCheckSum);
dt.Data = ConvertFromBytesToString(dataArr);
dt.ComPortName = "COM";
this.Dispatcher.Invoke(updateTableGuiDelgate, dt);
}
}
private void barak()
{
while (true)
{
this.Dispatcher.BeginInvoke(e);
System.Threading.Thread.Sleep(100);
}
}
/// <summary>
/// this class contain a row for the data to show in the dataGridReceived
/// </summary>
public class DataForTable : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
/// <summary>
/// this method used for on property change to update the data in the table.
/// </summary>
/// <param name="propertyName"></param>
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
}
private int lineNumber; // the line number of row.
/// <summary>
/// get or set contain the line number to show the data
/// </summary>
public int LineNumber
{
get { return lineNumber; }
set
{
if (lineNumber != null)
{
lineNumber = value;
OnPropertyChanged("LineNumber");
}
}
}
private string time; // contain the time of the data that has been sent or received.
/// <summary>
/// get or sets the time that has been received.
/// </summary>
public string Time
{
get { return time; }
set
{
if (time != null)
{
time = value;
OnPropertyChanged("Time");
}
}
}
private string rX_TX; // if it is RX or TX
/// <summary>
/// this is the Com Port Name
/// </summary>
public string ComPortName
{
get { return comPortName; }
set
{
if (comPortName != null)
{
comPortName = value;
OnPropertyChanged("ComPortName");
}
}
}
/// <summary>
/// get or set contain if this is a data that has been send from the RX or from the TX
/// </summary>
public string RX_TX
{
get { return rX_TX; }
set
{
if (rX_TX != null)
{
rX_TX = value;
OnPropertyChanged("RX_TX");
}
}
}
private string data; // contain the line of data the has been received.
/// <summary>
/// get or set the line of data that has been received or sent
/// </summary>
public string Data
{
get { return data; }
set
{
if (data != null)
{
data = value;
OnPropertyChanged("Data");
}
}
}
private string msgType;// the translation of the data per the XML.
/// <summary>
/// get or sets the translation from the xml into the dll
/// </summary>
public string MsgType
{
get { return msgType; }
set
{
if (msgType != null)
{
msgType = value;
OnPropertyChanged("MsgType");
}
}
}
private string comPortName;
/// <summary>
/// this is a constructor for updating the data init all the variables
/// </summary>
public DataForTable()
{
lineNumber = 0;
time = "";
rX_TX = "";
data = "";
msgType = "";
comPortName = "";
}
}