BackgroundWorker无法在VSTO中工作 [英] BackgroundWorker Not working in VSTO
问题描述
我有一名背景工作者.在调用工作程序之前,我先禁用按钮并使gif可见.然后,我调用runworkerasync方法,该方法可以正常运行直到完成.在"RunWorkerCompleted()"上,我遇到了跨线程错误.知道为什么吗?
I have a background worker. Before I invoke the worker I disable a button and make a gif visible. I then invoke the runworkerasync method and it runs fine until comleteion. On the 'RunWorkerCompleted()' I get a cross thread error. Any idea why?
private void buttonRun_Click(object sender, EventArgs e)
{
if (comboBoxFiscalYear.SelectedIndex != -1 && !string.IsNullOrEmpty(textBoxFolderLoc.Text))
{
try
{
u = new UpdateDispositionReports(
Convert.ToInt32(comboBoxFiscalYear.SelectedItem.ToString())
, textBoxFolderLoc.Text
, Properties.Settings.Default.TemplatePath
, Properties.Settings.Default.ConnStr);
this.buttonRun.Enabled = false;
this.pictureBox1.Visible = true;
BackgroundWorker bw = new BackgroundWorker();
bw.DoWork += new DoWorkEventHandler(bw_DoWork);
bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted);
bw.RunWorkerAsync();
//backgroundWorker1.RunWorkerAsync();
}
catch (Exception ex)
{
MessageBox.Show("Unable to process.\nError:" + ex.Message, Properties.Settings.Default.AppName);
}
}
}
void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
buttonRun.Enabled = true;
pictureBox1.Visible = false;
}
void bw_DoWork(object sender, DoWorkEventArgs e)
{
u.Execute();
}
推荐答案
VSTO和BackgroundWorker似乎是一个问题.
It seems to be an issue with VSTO and BackgroundWorker.
解决方案位于此处
基本上你需要打电话
System.Threading.SynchronizationContext.SetSynchronizationContext(new WindowsFormsSynchronizationContext());
在致电RunWorkerAsync
之前.效果很好.
before you call RunWorkerAsync
. Works great.
为避免每次在AddIn的主类中可能有一个静态成员并重新使用它时都实例化该对象.这样,您只需实例化一次.
To avoid instantiating the object every time you may have a static member in you AddIn's main class and reuse it. This way you only instantiate once.
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