$('#twothree a')变量int countUploadMsg = 0;
private void backgroundWorker2_DoWork(object sender, DoWorkEventArgs e)
{
int counter = 0;
allLoadedMessages = new List<OpenPop.Mime.Message>();
OpenPop.Mime.Message loadedMessage = null;
DirectoryInfo di = new DirectoryInfo(@"e:\test\");
FileInfo[] files = di.GetFiles();
foreach (FileInfo file in files)
{
loadedMessage = OpenPop.Mime.Message.Load(file);
allLoadedMessages.Add(loadedMessage);
int nProgress = (files.Length - counter + 1) * 100 / files.Length;
backgroundWorker2.ReportProgress(nProgress);
counter += 1;
}
}
private void backgroundWorker2_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
pbt1.Value = e.ProgressPercentage;
pbt1.Text = e.ProgressPercentage.ToString() + "%";
pbt1.Invalidate();
lvnf.Items.Add(new ListViewItem(new string[]
{
allLoadedMessages[countUploadMsg].Headers.From.ToString(), //From Column
allLoadedMessages[countUploadMsg].Headers.Subject, //Subject Column
allLoadedMessages[countUploadMsg].Headers.DateSent.ToString() //Date Column
}));
countUploadMsg += 1;
}
是pbt1。
我看到ProgressBar绿色为100％，文字也是100％，然后开始向后移动绿色和文字100％99％98％....
也许我正在做的计算：
ProgressBar int nProgress = (files.Length - counter + 1) * 100 / files.Length;
也应该是files.Length？
答案 0 :(得分：3)
是的，你做得对。这是你的计算。
int nProgress = (files.Length - counter + 1) * 100 / files.Length;
由于counter，您的counter += 1;正在增加，而您的files.Length是不变的。然后由于上述计算，nProgress肯定会越来越少。因此，您可以100％降至0％。
如果你不这样做，那就是：使用计数器作为渐进指标？
int nProgress = counter * 100 / files.Length; //use counter here...
此外，您可能希望在调用后台工作进度之前增加计数器：
foreach (FileInfo file in files)
{
loadedMessage = OpenPop.Mime.Message.Load(file);
allLoadedMessages.Add(loadedMessage);
counter += 1; //put before the progress;
int nProgress = counter * 100 / files.Length;
backgroundWorker2.ReportProgress(nProgress);
}