VB 2008

I'm trying to highlight some text in a web browser and copy and paste it into a textbox. When I run the first two commands below and manually click on the textbox and paste, the text is copied correctly.

WebBrowser1.Focus()
SendKeys.Send("^{INSERT}")

I tried the following possible commands to program that function but none of it works.

'TextBox3.Text = Clipboard.GetText()

'TextBox3.Text = Clipboard.GetDataObject.

'Dim iData As IDataObject = Clipboard.GetDataObject()
'TextBox3.Text = CType(iData, String)

'Dim iData As IDataObject = Clipboard.GetDataObject()
'TextBox3.Text = CType(iData.GetData(DataFormats.Text), String)

Your help would be appreciated. Thanks, Sam