我对“大”文件(大约4Mb)进行了一些操作
我这样做:
1.从目录中获取所有文件,并将它们放在IList中。MyInfoClass具有以下属性:name,extension,fullPath,creationDate,contentPart
2.我执行Linq查询以仅获取某些扩展名类型。
3.我循环搜索Linq查询结果,并针对每个结果打开文件,执行一些操作(获取值),然后将结果放入MyFileIno.ContentPart中。
仅供参考:30个文件,这是一个14秒的操作
辛苦了
问题是,当我从UI运行我的库时,当我单击按钮时,窗口在操作期间冻结。我想要 :
不冻结表格的解决方案
查看进度操作
您能给我最佳实践来解决这种问题吗?
谢谢,
码
public class FileManager
{
public string CurrentFileName { get; set; }
public void Validation(string path)
{
IList<InfoFile> listFile = GetListFile(path);
foreach (InfoFile item in listFile)
{
CurrentFileName = item.Name;
.....
}
}
}
private void button1_Click(object sender, EventArgs e)
{
var worker = new BackgroundWorker();
worker.DoWork += (s, args) =>
{
int percentProgress = 6;
FileManager fileManager = new FileManager();
fileManager.Validation(@"C:.....");
((BackgroundWorker)s).ReportProgress(percentProgress, fileManager.CurrentFileName);
};
worker.ProgressChanged += (s, args) =>
{
var currentFilename = (string)args.UserState;
label1.Text = currentFilename;
progressBar1.Value = args.ProgressPercentage;
};
worker.RunWorkerCompleted += (s, args) =>
{
progressBar1.Value = 0;
};
worker.RunWorkerAsync();
}
最佳答案
该应用程序冻结,因为您正在主线程中执行文件解析。您可以使用BackgroundWorker在新线程上执行操作。以下是一些伪代码,可以帮助您入门:
private void button1_Click(object sender, EventArgs e)
{
var worker = new BackgroundWorker();
worker.DoWork += (s, args) =>
{
// Here you perform the operation and report progress:
int percentProgress = ...
string currentFilename = ...
((BackgroundWorker)s).ReportProgress(percentProgress, currentFilename);
// Remark: Don't modify the GUI here because this runs on a different thread
};
worker.ProgressChanged += (s, args) =>
{
var currentFilename = (string)args.UserState;
// TODO: show the current filename somewhere on the UI and update progress
progressBar1.Value = args.ProgressPercentage;
};
worker.RunWorkerCompleted += (s, args) =>
{
// Remark: This runs when the DoWork method completes or throws an exception
// If args.Error != null report to user that something went wrong
progressBar1.Value = 0;
};
worker.RunWorkerAsync();
}