Adding New member to TextBox..

3 Mar 2006 7:05 PM

Husam

Hi EveryBody:

How can I add Sub or Function or property to be a member of TextBox ?

For example TextBox1.Text , text is a property in Textbox1 How Can I add the
following sub to be a member of textbox1:

Public Sub SaveHtml(ByVal stream As Stream)
        If stream Is Nothing Then
            Throw New ArgumentNullException("SaveHtml : Must specify a
non-null stream to which to save")
        End If
        Dim content As String = SaveHtml()
        Dim writer As New StreamWriter(stream, Encoding.UTF8)
        writer.Write(content)
        writer.Flush()
    End Sub 'SaveHtml

Any Help or redirection will be appreciated

regard's

Husam

3 Mar 2006 8:08 PM

pvdg42

Show quote Hide quote

"Husam" <Hu***@discussions.microsoft.com> wrote in message
news:D2F57ED1-7509-4345-946D-7AC6EED979EA@microsoft.com...
> Hi EveryBody:
>
> How can I add Sub or Function or property to be a member of TextBox ?
>
> For example TextBox1.Text , text is a property in Textbox1 How Can I add
> the
> following sub to be a member of textbox1:
>
> Public Sub SaveHtml(ByVal stream As Stream)
>        If stream Is Nothing Then
>            Throw New ArgumentNullException("SaveHtml : Must specify a
> non-null stream to which to save")
>        End If
>        Dim content As String = SaveHtml()
>        Dim writer As New StreamWriter(stream, Encoding.UTF8)
>        writer.Write(content)
>        writer.Flush()
>    End Sub 'SaveHtml
>
> Any Help or redirection will be appreciated
>
> regard's
>
> Husam

What you're talking about is extending the .NET Framework TextBox class.
Something like this in a class module...

Public Class MyTextBox Inherits TextBoxthen add your new method.

Once you've got your new subclass defined, you should be able to call your
method for instances of your new class.

For details, search through your MSDN help for articles on "subclassing",
"extending classes", "inheritance", etc.

3 Mar 2006 9:51 PM

Armin Zingler

"Husam" <Hu***@discussions.microsoft.com> schrieb
> Hi EveryBody:
>
> How can I add Sub or Function or property to be a member of TextBox
> ?

http://msdn.microsoft.com/library/en-us/vbcn7/html/vaconInheritanceForBasicLanguage.asp

http://msdn.microsoft.com/library/en-us/vbcon/html/vbconControlCreation.asp

Armin