calling forms from a MDI form with a menu

[fcoreyesv]

I am new in VB.NET. I wanted to create an application using the same techniques in VB 6.0. For my surprise the forms objects are controled differently.

 

this is my code:

--------------------------------------

 

Imports System.Data

Imports System.Data.SqlClient

Imports System

Imports Microsoft

 

 

 

Public Class Cypher

Inherits System.Windows.Forms.Form

 

Private Sub Cypher_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

 

 

End Sub

 

 

Private Sub mnu_newDoc_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles mnu_newDoc.Click

 

frmNewDoc.Show()

End Sub

End Class

-------------------------

 

I have this error on the "show" method line ..... "reference to a non-shared member requires an object reference"

 

I am maybe missing a reference but I did not find any example that shows something about this reference. I am waiting for some books of VB.NET but in the mean time I will apreciate your comments.

 

Thanks

[aewarnick]

You must create a new variable of the type you are trying to use. C# example:

Form - the type which is a class.

Form f=new Form(); - f, a new instance of type Form.

f.Show(); - I show and use f not Form.

[mutant]

In .NET forms are objects, so you need to create an instance of the Form object to show it:

Dim frmNDoc As New frmNewDoc
frmNDoc.Show()

[aewarnick]

We posted at the same time mutant. I gave the C# example, you gave VB. Good work.

[fcoreyesv]

thanks

 

Thanks guys,

 

I am working on a project with databases in VB.NET, which book do you recomend ? I found one from Evangelous Petroutsos. Let me know if you know a better one.

 

Thanks again

 

Jose Reyes

[aewarnick]

Post a new thread about that.