WebBrowser.DocumentCompleted 事件

  • 参考

定义

命名空间:
System.Windows.Forms
程序集:
System.Windows.Forms.dll

在 WebBrowser 控件完成加载文档时发生。

public:
 event System::Windows::Forms::WebBrowserDocumentCompletedEventHandler ^ DocumentCompleted;
public event System.Windows.Forms.WebBrowserDocumentCompletedEventHandler DocumentCompleted;
public event System.Windows.Forms.WebBrowserDocumentCompletedEventHandler? DocumentCompleted;
member this.DocumentCompleted : System.Windows.Forms.WebBrowserDocumentCompletedEventHandler 
Public Custom Event DocumentCompleted As WebBrowserDocumentCompletedEventHandler 
Public Event DocumentCompleted As WebBrowserDocumentCompletedEventHandler

事件类型

WebBrowserDocumentCompletedEventHandler

示例

下面的代码示例演示如何使用此事件在文档完全加载后打印文档。

private void PrintHelpPage()
{
    // Create a WebBrowser instance. 
    WebBrowser webBrowserForPrinting = new WebBrowser();

    // Add an event handler that prints the document after it loads.
    webBrowserForPrinting.DocumentCompleted +=
        new WebBrowserDocumentCompletedEventHandler(PrintDocument);

    // Set the Url property to load the document.
    webBrowserForPrinting.Url = new Uri(@"\\myshare\help.html");
}

private void PrintDocument(object sender,
    WebBrowserDocumentCompletedEventArgs e)
{
    // Print the document now that it is fully loaded.
    ((WebBrowser)sender).Print();

    // Dispose the WebBrowser now that the task is complete. 
    ((WebBrowser)sender).Dispose();
}

Private Sub PrintHelpPage()

    ' Create a WebBrowser instance. 
    Dim webBrowserForPrinting As New WebBrowser()

    ' Add an event handler that prints the document after it loads.
    AddHandler webBrowserForPrinting.DocumentCompleted, New _
        WebBrowserDocumentCompletedEventHandler(AddressOf PrintDocument)

    ' Set the Url property to load the document.
    webBrowserForPrinting.Url = New Uri("\\myshare\help.html")

End Sub

Private Sub PrintDocument(ByVal sender As Object, _
    ByVal e As WebBrowserDocumentCompletedEventArgs)

    Dim webBrowserForPrinting As WebBrowser = CType(sender, WebBrowser)

    ' Print the document now that it is fully loaded.
    webBrowserForPrinting.Print()
    MessageBox.Show("print")

    ' Dispose the WebBrowser now that the task is complete. 
    webBrowserForPrinting.Dispose()

End Sub

注解

WebBrowser每当设置以下属性之一或调用方法时，控件将导航到新文档：

处理 事件以 DocumentCompleted 在新文档完成加载时接收通知。 DocumentCompleted事件发生时，新文档将完全加载，这意味着可以通过 、 DocumentText或 DocumentStream 属性访问其内容Document。

若要在导航开始前接收通知，请 Navigating 处理 事件。 处理此事件可让你在未满足某些条件（例如，用户尚未完全填写表单时）取消导航。 处理 事件， Navigated 以在 WebBrowser 控件完成导航并开始在新位置加载文档时接收通知。

有关处理事件的详细信息，请参阅 处理和引发事件。

适用于

另请参阅