htmltextwriter - error

[Guest]

I am fairly new to asp and web development. I'm having a tough time with the htmltextwriter. I keep receiving an error that basically says 'object reference not set to instance of object. It sure looks like it is to me so I am kind of stuck! Thanks in advance for any help

Here's my code

Dim writer As TextWrite


Dim output As New HtmlTextWriter(writer

output.WriteBeginTag("iframe") <--BLOWS HER

output.AddAttribute("Name", "encounterutil"
output.AddAttribute("src", "http://ingnosis/ingnosisserver/medi...Render&amp;rc:Toolbar=false&amp;rc:Zoom=False"
output.AddStyleAttribute("height", "310"
output.AddStyleAttribute("width", "375"
output.WriteEndTag("iframe"

 

[Guest]

Seems to be working now... thanks.