0

当 BackgroundWorker 进程完成时，我在隐藏表单时遇到了一些麻烦。

private void submitButton_Click(object sender, EventArgs e)
{
    processing f2 = new processing();
    f2.MdiParent = this.ParentForm;
    f2.StartPosition = FormStartPosition.CenterScreen;
    f2.Show();
    this.Hide();

    backgroundWorker1.RunWorkerAsync();
}

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    // loop through and upload our sound bits
    string[] files = System.IO.Directory.GetFiles(System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments) + "\\wav", "*.wav", System.IO.SearchOption.AllDirectories);
    foreach (string soundBit in files)
    {
        System.Net.WebClient Client = new System.Net.WebClient();
        Client.Headers.Add("Content-Type", "audio/mpeg");
        byte[] result = Client.UploadFile("http://mywebsite.com/upload.php", "POST", soundBit);
    }
}

private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
    formSubmitted f3 = new formSubmitted();
    f3.MdiParent = this.ParentForm;
    f3.StartPosition = FormStartPosition.CenterScreen;
    f3.Show();
    this.Hide();
}

基本上，在按下“提交”按钮后，应用程序开始通过 php 脚本将文件上传到网络服务器。上传完成后，会触发 RunWorkerCompleted 方法，打开formSubmitted表单。我遇到的问题是，一旦后台工作人员完成并且直接在表单顶部打开，processing表单就不会关闭- 与我想要的相反，关闭表单然后打开表单。formSubmittedprocessingprocessingformSubmitted

4

1 回答 1

1

那么实际上你永远不会关闭processing表格：

尝试以下：

private processing _processingForm;

private void submitButton_Click(object sender, EventArgs e)
{
    _processingForm = new processing();
    _processingForm.MdiParent = this.ParentForm;
    _processingForm.StartPosition = FormStartPosition.CenterScreen;
    _processingForm.Show();

    this.Hide(); //HIDES THE CURRENT FORM CONTAINING SUBMIT BUTTON

    backgroundWorker1.RunWorkerAsync();
}

现在完成隐藏processing表格：

private void backgroundWorker1_RunWorkerCompleted(object sender,
                                        RunWorkerCompletedEventArgs e)
{
    formSubmitted f3 = new formSubmitted();
    f3.MdiParent = this.ParentForm;
    f3.StartPosition = FormStartPosition.CenterScreen;

    _processingForm.Close();//CLOSE processing FORM

    f3.Show();

    this.Hide();//this REFERS TO THE FORM CONTAINING WORKER OBJECT
}
于 2013-08-01T23:37:48.293 回答