Bringing a Form to the front of a Tab - vb.net

When I use Me.BringToFront() to Form4 it doesn't bring the form to the front as you can see in the picture:
And when I use Form1.Tab.SendToBack() to the Tab, the Tab disappear.
How can I bring Form4 to the front and prevent the Tab from disappearing?

Im able to solve it. I turn the propeties of Form1 IsMdiContainer to False then use this code
Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
Dim F As Form4
F = New Form4
F.Show()
F.Owner = Me
End Sub

Related

How do I add items to a listbox inside a user control?

I have a user control (XListBox) with a listbox (ListBox1) and a button on it. The user control is on a form (Form1) which also has a button on it. The code is shown below. If click the button inside the user control the text 'Add Item from inside XListBox' appears in the Listbox no problem. If I click the button on the form however, the string 'Add item to XListBox from form' does not get added to the listbox although the Debug.Print does show it in the output window. It appears that I am missing something but I have no idea what. Any help would be appreciated. Thanks in advance.
Public Class Form1
Dim lstActions As New XListBox
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
'
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
lstActions.AddItem("Add item to XListBox from form")
End Sub
End Class
Public Class XListBox ' user control
Private Sub XListBox_Load(sender As Object, e As EventArgs) Handles MyBase.Load
'
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
ListBox1.Items.Add("Add Item from inside XListBox")
End Sub
Public Sub AddItem(sString As String)
ListBox1.Items.Add(sString)
Debug.Print(sString)
End Sub
End Class
Why do you have this in your code there?
Dim lstActions As New XListBox
Surely you added the user control to your form in the designer, like you would any other control. How do you usually access a control that you added to the form in the designer? Basically, you are ignoring the one you added in the designer, i.e. the one you can see, and you have created another one that you never add to the form, so you can't see it, and that's the one you're adding the items to. Don't. Get rid of that field and use the one you added in the designer.

Passing strings between forms while both forms are are being shown on screen

Hello to stackoveflow community members.!
I am reading threads from stackoverflow from past 6 months and which was really helpful for me. I never get stuck to anything where i need to write my own question here.
Currently i am working on visual studio 2015 with window based .net application.
I am having multiple forms in my application. I am loading a form into another form through panel control.
Say i have a form1 which is main form and form2 which i have opened main form using panel control.
When i am opening my form1 as startup form the data transfer is taking place. But when i am using another form say form3 for login page as startup the data transfer is not working between form1 and form2.
Could some please help.!!
Please find example code as below.
enter image description here
Number of Forms - 3,
Form3 as Login Form,
Form1 as Main Form,
Form2 as Entry Form,
Code for Form3-==========
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim form1 As New Form1
form1.Show()
Me.Hide()
End Sub
Code for Form1-===========
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
RichTextBox1.Text = "Hello"
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim f As Form
f = Form2
f.TopLevel = False
f.WindowState = FormWindowState.Normal
f.FormBorderStyle = FormBorderStyle.None
Me.Panel1.Controls.Add(f)
f.Dock = DockStyle.Fill
f.Show()
End Sub
Code for Form2-=========
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Form1.RichTextBox1.Text = Me.TextBox1.Text
End Sub
As suggested by 'Preciousbetine', i have removed new instance for form1. Application is working as desired.
Thank you so Much!!!
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Form1.Show()
Me.Hide()
End Sub

calling one form from another when button is click

I am having two forms in vb where main form contains button and on button click event form2 will load.
I wrote this code:
Private Sub Button_Click_1(sender As Object, e As RoutedEventArgs) Handles newCustomer.Click
Dim d As BlankPage1 = New BlankPage1
d.show()
End Sub
where Blankpage1 is the name of second form. The problem is after clicking button, Blankpage1 doesn't appear.
Try BlankPage1.show() only, don't initialize first.
Private Sub Button_Click_1(sender As Object, e As RoutedEventArgs) Handles newCustomer.Click
form2.show() //name of the form
End Sub
Try like this :
Dim d As New BlankPage1
d.MdiParent = Me 'or the main form's name(MDI Parent Form)
d.StartPosition = FormStartPosition.CenterScreen
d.Show()
d.Focus()

Bring MDIChild form to front if already open

I've been struggling to get this to work...I have a button on a MDIchild form that opens another MDIchild form, but if the form is already open, it does not recognize it and opens a new one instead of bringing it to front. This is the code i've got:
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim MDIForm4 As New Form4
MDIForm4.MdiParent = Me
MDIForm4.Show()
End Sub
This works for the button to open the new form, and then I tried adding this:
If Not Form4 Is Nothing Then
Form4.BringToFront()
End If
But with no positive outcome. Does someone have any ideas?
Regards,
Jorge Brito
Here is how I typically do that:
For Each f As Form In Application.OpenForms
If TypeOf f Is frmTest Then
f.Activate()
Exit Sub
End If
Next
Dim myChild As New frmTest
myChild.MdiParent = Me
myChild.Show()
Notice this uses Application.OpenForms, you can use your Me.MdiChildren (assuming Me = this MDI form) if you want just the children of your main form.
Fixed now!
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
For Each f As Form In Application.OpenForms
If TypeOf f Is Form4 Then
f.Activate()
Exit Sub
End If
Next
Dim MDIForm As New Form4
MDIForm.MdiParent = Form2
MDIForm.Show()
End Sub
I was defining the MDI parent on the wrong form!

Code linking a form back to previous form in Windows Forms

Having a problem linking my form3 back to form2 in windows forms. I want the "back" button to take me back to form 2 but it doesnt do so. I am trying form2.show() but it doesnt work.
My current form3 code:
Public Class Form3
Private Sub CheckedListBox1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles CheckedListBox1.SelectedIndexChanged
MessageBox.Show("Developer Succsessfully Added to Sprint", "Developer Added")
End Sub
Private Sub Form3_Load(sender As Object, e As EventArgs) Handles MyBase.Load
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
**Form2.Show()**
End Sub
End Class
What happening is most likely you already closed your form and can't open it again.
Assuming, you have both instances well and alive
In Form2 you should have
me.Hide()
Form3.Show()
And In Form3 you should have
me.Hide()
Form2.Show()
It can be something like this
shared sub Main
dim f2 as new Form2()
dim f3 as new Form3()
f2.Next = f3
f3.previous = f2
end sub
To link forms you creating properties, Next and Previous
And then use that as way to operate the form that should open
In form code do
private sub BtnNext_Click(....).....
Me.Hide()
Me.Next.Show()
End Sub
and the same way for the previous. If you have wizard, you could chain all your forms this way.
and of course, to accomplish this, minimum, you need an interface that contracts your forms to implement Properties Next and Previous or you can have a base class with implementation of the buttons and properties and then it will all work.
simple code redirect one form1 to form2 Using C#
Form2 f2=new Form2();
f2.show() OR f2.ShowDialog();