c# - 从 WebBrowser 控件以横向模式打印？

Question

System.Windows.Forms.WebBrowser wb = new System.Windows.Forms.WebBrowser();

wb.DocumentStream = new FileStream("C:\a.html", FileMode.Open, FileAccess.Read);
while (wb.ReadyState != WebBrowserReadyState.Complete)
{
    Application.DoEvents();
}
wb.Print();

我知道如何从 PrinterDocument 对象设置页面方向，但不知道如何从 WebBrowser 对象设置。有什么办法吗？谢谢!

Answer 1

首先，我推荐你使用异步事件模型:

wb.DocumentCompleted += wb_DocumentCompleted;

private void wb_DocumentCompleted (object sender, WebBrowserDocumentCompletedEventArgs e)
{
    ((WebBrowser)sender).Print();
}

要打印(添加对 Microsoft.mshtml.dll 的引用):

mshtml.IHTMLDocument2 doc = wb.Document.DomDocument as mshtml.IHTMLDocument2;
doc.execCommand("print", showUI, templatePath);

参见 IHTMLDocument2.execCommand , MSDN forum question并点击链接。