Reload or Refresh Form

Hi,

I would like to know how I can reload a form or repopulate a textbox after button click event.

Here is the code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim SelectedItem As String = ComboBox1.Text '("Whats your f color")

Select Case LCase(ComboBox1.Text)
Case "blue"
MsgBox("we have blue")
Case "yellow"
MsgBox("we have yellow")
TextBox1.Text = (SelectedItem)
Me.Refresh()

End Select
End Sub

So after user selects yellow, a msg box appears display we have yellow, I all so want texbox1.text to be updated with the selectedItem, which will be yellow.

Thanks,

Mike

InitializeComponents() is the method resposible of putting all items in your form

Hi,

In your case code should look for example like this:

VB Code:

Dim text As String = ""
 
Select Case Me.ComboBox1.Text
       Case "yellow"
                text = "yellow"
        Case "blue"
                text = "blue"
End Select
 
Me.TextBox1.Text = text

but if you want to populate textbox with value from combobox you don't need Select Case. You can do it simply like that:

VB Code:

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim text As String
        text = Me.ComboBox1.Text
        Me.TextBox1.Text = text
    End Sub

or simply by placing code into Combobox SelectedIndexChanged event handler:

VB Code:

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
        Me.TextBox1.Text = Me.ComboBox1.Text
    End Sub

Hope this helps.

Regards,
sweet_dreams

You are already populating the text box!

VB Code:

TextBox1.Text = (SelectedItem)

HI, Sweet_dreams

But if I do it that way, how can I tell which SelectItem the user has selected, my code is more involved then this, but I did not what to fill up post with code.

Dim text As String = ""

because if I have predined items, I can see your point, but I also would like to capture other user inputed items too.

So with that how can I get it to get predfined items and user added items to populate the textbox1

Thanks for your help, great explaination

Mike :wave:

Hi, Sweet_dreams

This does show blue in textbox1.text, but if a user inputs something else, how can I capture that.

Dim SelectedItem As String = ComboBox1.Text '("Whats your f color")
Dim Text As String = ""

Select Case LCase(ComboBox1.Text)
Case "blue"
Text = "Blue"
MsgBox("we have blue")
Me.TextBox1.Text = Text
Case "yellow"
MsgBox("we have yellow")

TextBox1.Text = (SelectedItem)

End Select


Thanks,

Mike

Sorry forgot to explain

TextBox1.Text = (SelectedItem)

why will this not work?

Also why do you refer to Me.TextBox1

I was trying Me.Refresh

any Ideas

Mike

Try this

VB Code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
 
        Select Case CStr(Me.ComboBox1.SelectedItem)
            Case "blue"
                Me.TextBox1.Text = "blue"
                MsgBox("we have blue")
            Case "yellow"
                Me.TextBox1.Text = "yellow"
                MsgBox("we have yellow")
        End Select
 
    End Sub

Quote:

---

Also why do you refer to Me.TextBox1

---

your form is a class object, to refer any property in a class you use "Me.PropertyName"

What is the purpose to refresh the form?
You don’t need to refresh the form!

HI, VBDT

This works good, but still will not let you, get selected user input,

say a user types red, but red it not in my items list, it will not populate the textbox1.text field??

Thanks all everyone help in this matter.

Mike

Then this is what you want

VB Code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim myColor As String = CStr(Me.ComboBox1.SelectedItem)
        Select Case myColor
            Case "blue"
                MsgBox("we have blue")
            Case "yellow"
                MsgBox("we have yellow")
        End Select
        Me.TextBox1.Text = myColor
    End Sub

I found the fix:

I had to move the textbox1.text out of the select case statement, to below the end select?

in my program code I have many other line of code that write and read the registry, so why does this textbox1.text command not work inside the select case statements?

Thanks,

Mike

Select Case CStr(Me.ComboBox1.SelectedItem)
Case "blue"
TextBox1.Text = ComboBox1.Text ' I fix it by moving this statement out of the Select Case to below the End Select?
MsgBox("we have blue")
Case "yellow"
Me.TextBox1.Text = "yellow"
MsgBox("we have yellow")
End Select
TextBox1.Text = ComboBox1.Text

It does work in select case statement! Thus if you select ‘blue’ or ‘yellow’ colors the textbox will show the color names in it but if you select different colors from those the textbox will be empty because the textbox assigns value if the select case condition is true!