如何删除已在WebBrowser控件被导航的文件？ [英] How can i delete the file that has been navigated in a webbrowser control?

问题描述

如何删除已在web浏览器被导航的文件？
错误说它正由另一个进程

  preview_wb.Navigate（@C：\\ mypdf.pdf）;私人无效close_btn_Click（对象发件人，EventArgs的发送）
{
    preview_wb.Stop（）;
    File.Delete（@C：\\ mypdf.pdf）;
}
 

解决方案

通常人们认为这code：

  webBrowser.Navigate（关于：空白）;
而（webBrowser.ReadyState！= WebBrowserReadyState.Complete）
    Application.DoEvents（）;File.Delete（文件名）;
 

我不喜欢它。我preFER处理DocumentCompleted事件。

 无效的DeleteFile（）
{
    needToDeleteFile = TRUE;
    webBrowser.Navigate（关于：空白）;
}无效webBrowser_DocumentCompleted（对象发件人，WebBrowserDocumentCompletedEventArgs E）
{
    如果（needToDeleteFile）
    {
        File.Delete（文件名）;
        needToDeleteFile = FALSE;
    }
}
 

How can I delete the file that has been navigated in the webbrowser? Error says "It is being used by another process"

preview_wb.Navigate(@"C:\mypdf.pdf");

private void close_btn_Click(object sender, EventArgs e)
{
    preview_wb.Stop();
    File.Delete(@"C:\mypdf.pdf");
}

解决方案

Usually people suggest this code:

webBrowser.Navigate("about:blank");
while (webBrowser.ReadyState != WebBrowserReadyState.Complete)
    Application.DoEvents();

File.Delete(fileName);

I don't like it. I prefer to handle DocumentCompleted event.

void DeleteFile()
{    
    needToDeleteFile = true;
    webBrowser.Navigate("about:blank");
}

void webBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    if (needToDeleteFile)
    {
        File.Delete(fileName);
        needToDeleteFile = false;
    }
}

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