等待线程状态在按钮单击事件中“停止”

Question

I'm having some issues while waiting for a ThreadState during the Click event of a button control. Whenever I click my button it'll execute the code below. The problem with this is that it won't wait until the ThreadState is "Stopped", so it never enables btnImportData or btnExportBellijst .

I've tried t.Join() but that freezes my whole form and I use a RichTextBox as logger, so that'd result in a logger that freezes for a few seconds and then shows a lot of text at once. The reason I put the ImportData function on another Thread is to keep the form running so people can see the logs happening realtime.

What I'd like to have when I click my button:

1. Change Enabled of 1 or more buttons.
2. Run my function ImportData on another thread so my logger can keep logging. ( void ImportData(){} )

3. Change Enabled of 1 or more buttons after my function is done doing something.

    private void btnImportData_Click(object sender, EventArgs e) { //Disable current button btnImportData.Enabled = false; imgBonne.Visible = false; //random image rtConsole.Visible = true; //RichTextBox logger //Create a new thread for the button function var t = new Thread(ImportData); t.Start(); //It does NOT wait until thread stopped while (t.ThreadState == ThreadState.Stopped) { //Never gets executed btnImportData.Enabled = true; btnExportBellijst.Enabled = true; } } 

Extra Info: Screenshot from before pressing "Import Data": http://puu.sh/88oD6.png Screenshot from after the application is done importing data: http://puu.sh/88oNT.png

(edit)Target framework: .NET Framework 4

I was originally using the code below, but this instantly enables all the buttons after pressing "Import Data".

    private void btnImportData_Click(object sender, EventArgs e)
    {
        imgBonne.Visible = false; //random image
        rtConsole.Visible = true; //RichTextBox logger

        var t = new Thread(ImportData);
        t.Start();

        while (t.ThreadState == ThreadState.Running)
        {
            btnImportData.Enabled = false;
        }
        btnImportData.Enabled = true;
        btnExportBellijst.Enabled = true;
    }

Edit: I'm sorry if this is in the wrong category, I wanted to put it in c#.

Answer 1

Using the Task Parallel Library can make it a whole lot easier:

private void btnImportData_Click(object sender, EventArgs e)
    {
        imgBonne.Visible = false; //random image
        rtConsole.Visible = true; //RichTextBox logger

        btnImportData.Enabled = false;

        Task.Run(ImportData).ContinueWith((Task task) =>
        {
            btnImportData.Enabled = true;
            btnExportBellijst.Enabled = true;
        }, TaskScheduler.FromCurrentSynchronizationContext());
    }