觸發新窗口時關閉進度條

Question

我有兩種形式。 MainForm和ProductDetailForm

MainForm內部有txtSearchBox輸入框和一些用於過濾搜索的單選值。 搜索執行時，將顯示progressbar 。 最初，進度條設置為Visible = false;

在btnSearch點擊事件上，我正在調用background_worker進行搜索。 立即將progressbar設置為Visible = true。

當找到數據並且在MainForm progressBar上打開新窗口（ ProductDetailForm ）仍然可見時，所以我的問題是在打開新窗口時如何將Visible設置為false。

private void bntSearch_Click(object sender, EventArgs e)
{
   progressBarControll.Visible = true;
   backgroundWorker1.RunWorkerAsync();
}

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{   
   MyData data = repository.GetData(1);
   // tried here  progressBarControll.Visible = false;
   // but it raises an exception
   var detailsForm = new ProductDetailForm(data);

}

private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
     progressBarControll.Visible = false;
}

Answer 1

您可以將打開新表單並將進度條隱藏到RunWorkerCompleted方法中：

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{   
   MyData data = repository.GetData(1);
}

private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
     progressBarControll.Visible = false;
     var detailsForm = new ProductDetailForm(data);
}