I have my application created with Windows Forms which exports Images from multiple family files to a specific path, I used background Worker to avoid application freeze and also to update the progress bar and progress percentage,
public static BackgroundWorker BGWORKER { get; set; }
// initialize my form
public Main_Form()
{ InitializeComponent();
BGWORKER = new BackgroundWorker();
BGWORKER.DoWork += BGWORKER_DOWORK;
BGWORKER.ProgressChanged += BGWORKER_ProgressChanged;
BGWORKER.WorkerReportsProgress = true;
BGWORKER.RunWorkerCompleted += BGWORKER_COMPLETED;
}
//start button click event
private void StartBtn_Click(object sender, EventArgs e)
{
if (!BGWORKER.IsBusy)
{
BGWORKER.RunWorkerAsync();
}
}
// do work event
private async void BGWORKER_DOWORK(object sender, DoWorkEventArgs e)
{
ExtHand.Request = My_Requests.test;
ExtEvent.Raise();
}
//and inside my method I called for each file path
foreach (path in mypaths)
{
//do export method then
Main_Form.BGWORKER.ReportProgress(1);
}
and I got this error within the first loop
"This operation has already had OperationCompleted called on it and further calls are illegal"
any one can help please?
