編輯

共用方式為

HtmlWindow.Frames Property

  • Reference

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll

Gets a reference to each of the FRAME elements defined within the Web page.

public:
 property System::Windows::Forms::HtmlWindowCollection ^ Frames { System::Windows::Forms::HtmlWindowCollection ^ get(); };
public System.Windows.Forms.HtmlWindowCollection Frames { get; }
public System.Windows.Forms.HtmlWindowCollection? Frames { get; }
member this.Frames : System.Windows.Forms.HtmlWindowCollection
Public ReadOnly Property Frames As HtmlWindowCollection

Property Value

HtmlWindowCollection

An HtmlWindowCollection of a document's FRAME and IFRAME objects.

Examples

The following code example inspects each document within a page containing frames and creates a table of all of the outgoing hyperlinks from each page for future inspection.

private void GetLinksFromFrames()
{
    Hashtable linksTable = new Hashtable();
    string frameUrl;

    if (!(webBrowser1.Document == null))
    {
        HtmlWindow currentWindow = webBrowser1.Document.Window;
        if (currentWindow.Frames.Count > 0)
        {
            foreach (HtmlWindow frame in currentWindow.Frames)
            {
                frameUrl = frame.Url.ToString();
                Hashtable frameLinksHash = new Hashtable();

                linksTable.Add(frameUrl, frameLinksHash);
                foreach (HtmlElement hrefElement in frame.Document.Links)
                {
                    frameLinksHash.Add(hrefElement.GetAttribute("HREF"), "Url");
                }
            }
        }
        else
        {
            Hashtable docLinksHash = new Hashtable();
            linksTable.Add(webBrowser1.Document.Url.ToString(), docLinksHash);

            foreach (HtmlElement hrefElement in webBrowser1.Document.Links)
            {
                docLinksHash.Add(hrefElement.GetAttribute("HREF"), "Url");
            }
        }
    }
}

Dim LinksTable As Hashtable

Private Sub GetLinksFromFrames()
    LinksTable = New Hashtable()
    Dim FrameUrl As String

    If (WebBrowser1.Document IsNot Nothing) Then
        With WebBrowser1.Document
            Dim CurrentWindow As HtmlWindow = .Window
            If (CurrentWindow.Frames.Count > 0) Then
                For Each Frame As HtmlWindow In CurrentWindow.Frames
                    FrameUrl = Frame.Url.ToString()
                    Dim FrameLinksHash As New Hashtable()
                    LinksTable.Add(FrameUrl, FrameLinksHash)

                    For Each HrefElement As HtmlElement In Frame.Document.Links
                        FrameLinksHash.Add(HrefElement.GetAttribute("HREF"), "Url")
                    Next
                Next
            Else
                Dim DocLinksHash As New Hashtable()
                LinksTable.Add(.Url.ToString(), DocLinksHash)

                For Each HrefElement As HtmlElement In .Links
                    DocLinksHash.Add(HrefElement.GetAttribute("HREF"), "Url")
                Next
            End If
        End With
    End If
End Sub

Remarks

A FRAME is a set of windows defined within a FRAMESET. FRAMEs enable hosting multiple documents within a single document. Each FRAME is defined as possessing a certain row and column width, and is position on the page in relation to the other FRAMEs defined within the FRAMESET; the position of a FRAME is fixed, although a user may sometimes use the mouse cursor to grow or shrink the FRAME. An IFRAME is similar to a frame, but it need not be anchored in a fixed position.

Frames will contain one instance of HtmlWindow for each FRAME or IFRAME defined within a Web page.

Applies to

See also