How to convert String to Form name?

I have a table that contains a list of users and their access to certain forms.

Code:

---

User      Form
Tom        Form1
Jane      Form1
Jane      Form2
Peter      Form3

---

This table is read when the application first loads. How can I convert the form string (Form1, Form2, Form3...) to a form name where I can do something like:

Form1.show
Form2.show

Thanks a lot!

You need to use Reflection.

vb.net Code:

Imports System.Reflection
 
Public Class Form2
 
    Private Sub Button1_Click( _
        ByVal sender As System.Object, _
        ByVal e As System.EventArgs _
    ) Handles Button1.Click
 
        Dim frm As New Form
        Dim formName As String = "Form1"
 
        formName = [Assembly].GetEntryAssembly.GetName.Name & "." & formName
        frm = DirectCast([Assembly].GetEntryAssembly.CreateInstance(formName), Form)
        frm.Show()
    End Sub
 
End Class

Quote:

---

Originally Posted by Deepak Sakpal

You need to use Reflection.

vb.net Code:

Imports System.Reflection
 
Public Class Form2
 
    Private Sub Button1_Click( _
        ByVal sender As System.Object, _
        ByVal e As System.EventArgs _
    ) Handles Button1.Click
 
        Dim frm As New Form
        Dim formName As String = "Form1"
 
        formName = [Assembly].GetEntryAssembly.GetName.Name & "." & formName
        frm = DirectCast([Assembly].GetEntryAssembly.CreateInstance(formName), Form)
        frm.Show()
    End Sub
 
End Class

---

Hello,

I try your code,but not working,the error is can't create Instance.do you have solution for me?

Thanks

Quote:

---

Originally Posted by datajaya_ap

Hello,

I try your code,but not working,the error is can't create Instance.do you have solution for me?

Thanks

---

Please post your code.

Quote:

---

Originally Posted by Deepak Sakpal

Please post your code.

---

Sory,the problem can resolved.my assembly name is wrong.

Thanks

It is not working properly when it is calling a form from other project. Any solutions?

Quote:

---

Originally Posted by nicedeveloper

It is not working properly when it is calling a form from other project. Any solutions?

---

This thread is 5 years old. If you have a problem then you should make a new thread and explain your problem carefully so that we may help you.

I think he wants to do what the thread title is asking.

In which case, you have to get the right namespace and then create an instance of the name, then convert it to a form object.

This assumes the name of the form is in a textbox, but you could also use a listbox, or a combobox or anything else capable of storing a string.

vb.net Code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim FullTypeName As String = Application.ProductName & "." & TextBox1.Text
        Dim FormInstanceType As Type = Type.GetType(FullTypeName, True, True)
        Dim objForm As Form = CType(Activator.CreateInstance(FormInstanceType), Form)
        objForm.Show()
End Sub

Dear Hack,
You understood what I was trying to do.
However, this only works when you are openning a form within a same project (since you are using Application.ProductName).
So I tried to use actual project name instead (perhaps "nCDS")
My code looks like this

sFormFullName = "n" & sProdType & "." & sFormName
Dim FormInstanceType As Type = Type.GetType(sFormFullName, True, True)
FRM = CType(Activator.CreateInstance(FormInstanceType), Form)
FRM.MdiParent = Me
FRM.Show()

I don't think my code is actually getting "FormInstanceType ".
Would you help?