Opening forms using strings
- Thread starter wdw
- Start date
Hope this helps
we wnated form 1 to hide and then form 2 to show so this is the code we used:
I don't know if it's exactly what you're looking for
Me.Hide()
Dim F As New Form2()
'we inserted variables that will pass to form2 here.
F.Show()
sorry if this isn't what you need.
thanks! Mindi
we wnated form 1 to hide and then form 2 to show so this is the code we used:
I don't know if it's exactly what you're looking for
Me.Hide()
Dim F As New Form2()
'we inserted variables that will pass to form2 here.
F.Show()
sorry if this isn't what you need.
thanks! Mindi
Ok, I'll explain what I am trying to do:
I've have a menu where a user can select a menuitem.
if he selects an item, he must go to a specific page.
The pagename where he must go to comes from the database.
But I cannot get the right code.
Hope you've got a good way to do this.
greetz
I've have a menu where a user can select a menuitem.
if he selects an item, he must go to a specific page.
The pagename where he must go to comes from the database.
But I cannot get the right code.
Hope you've got a good way to do this.
greetz
Nerseus
Danner
The name of the form (class) is stored as a string in the database? So if you have a class named frmMain and you have a string with the value "frmMain" you want to instantiate frmMain (the class) from the string value?
-ner
-ner
That really does seem an awfully odd way of doing things. However, if you really need it it should be possibly through the Assembly class:
Where "WindowsApplication1.myForm" is the full-qualified (i.e. including namespace) name of your form in your project.
Visual Basic:
Dim f As Form
f = DirectCast(System.Reflection.Assembly.GetExecutingAssembly().CreateInstance("WindowsApplication1.myForm"), Form)
f.Show()Where "WindowsApplication1.myForm" is the full-qualified (i.e. including namespace) name of your form in your project.
i've tried your code, but this is my result:
An unhandled exception of type 'System.NullReferenceException' occurred in application.exe
Additional information: Object reference not set to an instance of an object.
Additional information from me: The form does exist, I use the correct namespace, I have the destination form in a folder in my solution.
I don't get it anymore!!
An unhandled exception of type 'System.NullReferenceException' occurred in application.exe
Additional information: Object reference not set to an instance of an object.
Additional information from me: The form does exist, I use the correct namespace, I have the destination form in a folder in my solution.
I don't get it anymore!!
I'm sorry, but that is the correct and only way of doing what you need. If you're getting that exception, it means you got the namespace wrong.
Right-click on your project and select properties. In the box that says Root Namespace will be the namespace you want. Providing you haven't specified a sub-namespace in your form class (I'm guessing you haven't) then you can just use this with your form name in the code I gave you.
If your root namespace is WindowsApplication1, the string you'd pass to CreateInstance is WindowsApplication1.Form1, or whatever the name of your form is.
Right-click on your project and select properties. In the box that says Root Namespace will be the namespace you want. Providing you haven't specified a sub-namespace in your form class (I'm guessing you haven't) then you can just use this with your form name in the code I gave you.
If your root namespace is WindowsApplication1, the string you'd pass to CreateInstance is WindowsApplication1.Form1, or whatever the name of your form is.