我知道这不是关于取消BackGroundWorker的第一个问题,但我没有找到解决我的问题的答案。
我有一个发送文件的方法..我正在使用backgroundworker来调用它..
那么如何在发送文件的过程中取消backgroundworker..我的意思是我应该把它放在哪里?
if (backgroundWorker1.CancellationPending == true)
{
e.Cancel = true;
break;
}
以下是代码:
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
List<object> job = (List<object>)e.Argument;
string srcPath = (string)job[0];
string destPath = (string)job[1];
SendFile(srcPath, destPath);
}
发送方法:
private void SendFile(string srcPath, string destPath)
{
string dest = Path.Combine(destPath, Path.GetFileName(srcPath));
using (fs = new FileStream(srcPath, FileMode.Open, FileAccess.Read))
{
try
{
long fileSize = fs.Length;
if (sizeAll == 0)
sizeAll = fileSize;
sum = 0;
int count = 0;
data = new byte[packetSize];
SendCommand("receive<" + dest + "<" + fs.Length.ToString());
ProgressLabel(++fileCount, allFileCount);
InfoLabel("Sending " + srcPath, "busy");
while (sum < fileSize)
{
count = fs.Read(data, 0, data.Length);
network.Write(data, 0, count);
sum += count;
sumAll += count;
backgroundWorker1.ReportProgress((int)((sum * 100) / fileSize));
}
network.Flush();
}
finally
{
network.Read(new byte[1], 0, 1);
CloseTransfer();
}
}
}
我应该在发送方法的while()循环中检查CancellationPending .. 但是我无法从此方法访问backgroundworker的[e.Cancel] .. 我该怎么办?