When trying to fill a Listview with a BO i get the following error:







I setup everything correctly, i think, not sure why I'm getting this error.



Any ideas?

Does the method you selected require parameters?  If so you need to set those parameters in the ListPopulating event of the list.  There will be an event argument like this:

e.Parameters(0).Value = 1
e.Parameters(1).Value = "Second Parm"

I did that. I fixed it. Not sure why this works. I'm sure you can explain it to me.



This is what I had when it wasnt working...

e.Parameters(0).Value = Me.txtPOID.Text

I changed it to this and it worked.

e.Parameters(0).Value = Cint(Me.txtPOID.Text)

Can you enlighten me as to why that conversion made a difference?

It has to do with strong-typing.  Your method has a parameter defined as a System.Int32.  Any controls "Text" property is defined as a System.String.  By passing just the Control.Text, you are passing a string typed value and the method expects integer.  When you added the CInt(), it converted the text to Integer as the method was expecting.  .NET is a strong-typed development environment.  You cannot rely on automatic data conversions like other languages such as Visual FoxPro.  This is actually a VERY good thing.  You learn about type conversions either a compile time or very quickly when an app is run.  So most of the "Data Type Mistmatch" error from the old days are gone.

Just FYI, I would not use CInt().  It is very slow and is an obselete method.  You should do most of your type conversions like this:

CType(Control.Text, System.Integer)

Thaks for the tip! I can ALWAYS use those!

That's what we're here for!