HtmlElement.TagName Property (System.Windows.Forms)

TagName Property

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This page is specific to

Microsoft Visual Studio 2010/.NET Framework 4

Other versions are also available for the following:

.NET Framework Class Library

HtmlElement..::.TagName Property

Gets the name of the HTML tag.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)

Syntax

Visual Basic

Public ReadOnly Property TagName As String

public string TagName { get; }

Visual C++

public:
property String^ TagName {
    String^ get ();
}

member TagName : string

Property Value

Type: System..::.String
The name used to create this element using HTML markup.

Remarks

Many elements in the HTML Document Object Model have attributes, properties, and methods that are unique to those elements; such as the HREF attribute on the A element, or the Submit method on FORM. Use TagName when you have an element of a potentially arbitrary type, and need to perform a type-specific operation.

Examples

The following code example finds all of the IMG tags in a document, and uses the TagName property to test whether the IMG is hyperlinked to another page; if it is, the code assigns the URL to the ALT attribute of the IMG tag, so that users can mouse over the image to see where it will take them.

Visual Basic

Private Sub AddUrlToTooltip()
    If (WebBrowser1.Document IsNot Nothing) Then
        With WebBrowser1.Document
            For Each Elem As HtmlElement In .GetElementsByTagName("IMG")
                If (Elem.Parent.TagName.Equals("A")) Then
                    Dim AltStr As String = Elem.GetAttribute("ALT")
                    If (Not (AltStr Is Nothing) And (AltStr.Length <> 0)) Then
                        Elem.SetAttribute("ALT", AltStr & " - points to " & Elem.Parent.GetAttribute("HREF"))
                    Else
                        Elem.SetAttribute("ALT", "Points to " & Elem.Parent.GetAttribute("HREF"))
                    End If
                End If
            Next
        End With
    End If
End Sub

        private void AddUrlToTooltip()
        {
            if (webBrowser1.Document != null)
            {
                foreach (HtmlElement elem in webBrowser1.Document.GetElementsByTagName("IMG"))
                {
                    if (elem.Parent.TagName.Equals("A"))
                    {
                        String altStr = elem.GetAttribute("ALT");
                        if (!(altStr == null) && (altStr.Length != 0))
                        {
                            elem.SetAttribute("ALT", altStr + " - points to " + elem.Parent.GetAttribute("HREF"));
                        }
                        else
                        {
                            elem.SetAttribute("ALT", "Points to " + elem.Parent.GetAttribute("HREF"));
                        }
                    }
                }
            }
        }

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

HtmlElement Class

System.Windows.Forms Namespace

GetElementsByTagName

Other Resources

tagName Property