Setting the PAGE SIZE from the available forms in ASP.Net in vb

See more:

VB

ASP.NET

printing

Hello,

In my web application, in one page I am displaying HTML data by using Literal.Text and i am having a button for printing this page. When I click the button Printer Dialog is coming and I can give print,Every thing is working fine till that.

But I need to change the page size and margins in Page Setup of IE and also for the default printer from code before going for print.

I tried PrintDialog Class, PrintDocument like this:

Dim pp As New System.Drawing.Printing.PrintDocument 
For i = 0 To pp.DefaultPageSettings.PrinterSettings.PaperSizes.Count - 1 
If pp.DefaultPageSettings.PrinterSettings.PaperSizes.Item(i).Kind=System.Drawing.Printing.PaperKind.A4 Then 
pp.DefaultPageSettings.PaperSize = pp.DefaultPageSettings.PrinterSettings.PaperSizes.Item(i) 
Exit For 
End If 
Next

but it is giving Object Null reference error in the first line.
Can any one help with this..sample code or reference for doing this..

Thanks.