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HtmlDocument.GetElementsByTagName(String) Method

  • Reference

Definition

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

Retrieve a collection of elements with the specified HTML tag.

public:
 System::Windows::Forms::HtmlElementCollection ^ GetElementsByTagName(System::String ^ tagName);
public System.Windows.Forms.HtmlElementCollection GetElementsByTagName (string tagName);
member this.GetElementsByTagName : string -> System.Windows.Forms.HtmlElementCollection
Public Function GetElementsByTagName (tagName As String) As HtmlElementCollection

Parameters

tagName
String

The name of the HTML tag for the HtmlElement objects you want to retrieve.

Returns

HtmlElementCollection

The collection of elements who tag name is equal to the tagName argument.

Examples

HTML pages often use the META tag to embed arbitrary information about the document. The following HTML code example retrieves all of the META tags within an HTML document, finds the META tag with the name Description, and displays it to the user. The code example requires that your application has a WebBrowser control named WebBrowser1.

private void DisplayMetaDescription()
{
    if (webBrowser1.Document != null)
    {
        HtmlElementCollection elems = webBrowser1.Document.GetElementsByTagName("META");
        foreach (HtmlElement elem in elems)
        {
            String nameStr = elem.GetAttribute("name");
            if (nameStr != null && nameStr.Length != 0)
            {
                String contentStr = elem.GetAttribute("content");
                MessageBox.Show("Document: " + webBrowser1.Url.ToString() + "\nDescription: " + contentStr);
            }
        }
    }
}

Private Sub DisplayMetaDescription()
    If (WebBrowser1.Document IsNot Nothing) Then
        Dim Elems As HtmlElementCollection 
        Dim WebOC as WebBrowser = WebBrowser1

    Elems = WebOC.Document.GetElementsByTagName("META")

        For Each elem As HtmlElement In Elems
            Dim NameStr As String = elem.GetAttribute("name")

            If ((NameStr IsNot Nothing) And (NameStr.Length <> 0)) Then
                If NameStr.ToLower().Equals("description") Then
                    Dim ContentStr As String = elem.GetAttribute("content")
                    MessageBox.Show("Document: " & WebOC.Url.ToString() & vbCrLf & "Description: " & ContentStr)
                End If
            End If
        Next
    End If
End Sub

Applies to

See also