C# 暂停Backgroundworker,直到用户确认取消
我正在将excel文件上载到数据库中。以下是步骤: 1.我在excelRawData(数据表)中有excel数据 2.UploadProgress是进度条C# 暂停Backgroundworker,直到用户确认取消,c#,winforms,backgroundworker,C#,Winforms,Backgroundworker,我正在将excel文件上载到数据库中。以下是步骤: 1.我在excelRawData(数据表)中有excel数据 2.UploadProgress是进度条 int insertWkSuccess = 0; bool wait = true; int progress = 0; uploadProgress.Visible = lblPercent.Visible = true;
int insertWkSuccess = 0;
bool wait = true;
int progress = 0;
uploadProgress.Visible = lblPercent.Visible = true;
btnCancel.Text = "Cancel Upload";
uploadProgress.Value = 0;
uploadProgress.Maximum = excelRawData.Rows.Count;
_workerUpload = null;
_workerUpload = new BackgroundWorker();
rtxtError.AppendText("Uploading Sheet Data.........\n");
_workerUpload.DoWork += (obj, args) =>
{
foreach (DataRow row in excelRawData.Rows)
{
if (wait)
{
if (_workerUpload.CancellationPending)
{
args.Cancel = true;
args.Result = null;
return;
}
if (upload.Upload(row, excelRawData.Rows.IndexOf(row) + 1, country, company, version, ref errorMsg))
insertWkSuccess++;
progress++;
if (_workerUpload == null)
{
break;
}
_workerUpload.ReportProgress(progress);
setPercentValue((progress*100)/uploadProgress.Maximum);
}
if (errorMsg.Count() == 0 && insertWkSuccess > 0)
{
upload.insertWktoMain(version, country, ref errorMsg);
}
args.Result = new object[] { insertWkSuccess, company, selectedSheet };
}
};
_workerUpload.ProgressChanged+=_workerUpload_ProgressChanged;
_workerUpload.RunWorkerCompleted+=_workerUpload_RunWorkerCompleted;
_workerUpload.WorkerReportsProgress = true;
_workerUpload.WorkerSupportsCancellation = true;
_workerUpload.RunWorkerAsync();
下面是我对“取消”按钮单击的编码
if (_workerUpload.IsBusy)
{
wait = false;
var confirmResult = MessageBox.Show("Are you sure you want to terminate the current upload process.",
"Confirm Stop Process!!",
MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (confirmResult == System.Windows.Forms.DialogResult.Yes)
{
wait = true;
_workerUpload.CancelAsync();
}
else
wait = true;
}
这里的问题是,当我等待取消确认对话框结果时,上传过程仍在后台继续。是否有方法停止后台进程,直到获得对话框的结果
提前谢谢 还有,这里所谓的好处是什么?他们在锁定机器并离开10分钟时意外按下了取消按钮。他们回来,解锁机器,看到对话框,说“见鬼,不”,然后单击
no
按钮。(或更简单的场景,无论出于何种原因,他们选择“否”)。在等待他们的负面反应时,不做任何有用的工作有什么好处?如果你确信他们会回答“是”,那为什么要提示呢?肯定有办法,但你为什么要暂停呢?停止它,当用户非常确定他真的想取消时。就像每个人都说的那样,当代码已经停止上传过程时,询问用户是否确定要停止上传过程是没有意义的。当前表单中的行为将更合适。我正在尝试在确认后取消。有可能使用backgroundworker吗?有时候,越少越好。如果用户意外取消上载,会发生什么情况?他又开始了。那又怎么样?没有损失(除了一些时间)。另一方面,如果他需要确认:他看到他上传了错误的文件。那个超级机密的。。。他现在想取消。