Run a Form with a String Variable

[ahollaar]

Hi All,

I have multiple forms created and my question is if it is possible to show a from via a string variable, something like this.

Normal:
Dim frmtest As New frmRegistry
frmtest.ShowDialog()

Something like this:
dim runform as string = "frmRegistry"
Dim frmtest As New runform
frmtest.ShowDialog()

Or should I do this on another way.

Thanks,
AXH

[Edneeis]

Yes you can use the Activator.Createinstance method to create objects from strings, but the string has to be the full namespace.

'if you have option strict on then you may have to declare it as an object instead of form
Dim frm As Form=Activator.CreateInstance("MyNamespace.frmregistry")
frm.ShowDialog

Here is an example from MSDN: http://msdn.microsoft.com/library/de...et10082002.asp

[ahollaar]

This is the error message:

Value of type 'String' cannot be converted to 'System.Type'.

With the following code:

Dim frmname As String = "frmRegistry"
Dim frm As Form = Activator.CreateInstance(frmname)
frm.ShowDialog()

[Edneeis]

As I said the string must be the full name of the object including namespace. Try reading the MSDN article for more information.

Your project automatically has at least a root namespace so 'frmRegistry' is not the full name of the form.