c# - “Cross-thread operation is not valid” 尝试在 Backgroundworker 中获取 comboBox 的值时出现异常

Question

尝试在 Backgroundworker 的 IF 语句中获取组合框的值时遇到一些问题。当我尝试运行这段代码时

 if (KondisiSaldo.SelectedItem == "Kurang dari...")
 {
   view.RowFilter = string.Format("[Saldo] < '{0}'", thresholdcas);
   view2.RowFilter = string.Format("[Saldo] > '{0}'", thresholdcas);


   this.Invoke(new MethodInvoker(delegate
   {
     ViewDataSaldoGV.DataSource = view;
     SaldoUnscheduleGV.DataSource = view2;
   }));
}

错误说

Cross-thread operation not valid: Control 'KondisiSaldo' accessed from a thread other than the thread it was created on.

谁能帮帮我？

Answer 1

您正在非 GUI 线程中访问 KondisiSaldo。将 KondisiSaldo 放在 Invoke block 中以在 GUI 线程上访问它，就像您对 view 和 view2 控件所做的那样。

this.Invoke(new MethodInvoker(delegate
{
   if (KondisiSaldo.SelectedItem == "Kurang dari...")
   {
         view.RowFilter = string.Format("[Saldo] < '{0}'", thresholdcas);
         view2.RowFilter = string.Format("[Saldo] > '{0}'", thresholdcas);   

         ViewDataSaldoGV.DataSource = view;
         SaldoUnscheduleGV.DataSource = view2;
   }
}));

您可能需要调整您的状况。