How do i clear the screen?

[abcdefg]

I am making a windows app i have 1 form i want to clear it. I searched the forums, i googled around, and i still have no idea. Oh ya visual studio.net has the best help ive ever seen in any software package. Those microsoft guys are clever bunch. The help is so worthless why even have it?

[MrPolite]

what do you mean by clearing the screen? are you trying to clear up the stuff you've drawn on a windows form? you can just set it's image property to nothing and I guess that would clear it

[taxes]

Hi,

"The help is so worthless why even have it?"

MSDN Help is brilliant - provided you know how to use it!!! You HAVE to know precisely what question you are asking. If you ask the wrong question, that is your fault, not Microsoft's.

Your question is a good example. As MrPolite implies, what you probably DON'T want to do is "Clear the Screen". (If you do actually want to clear the screen without closing the application then simply use the minimise button.)

[::: XD :::]

If I do understand you correctly, you want to make all textboxes empty? If so, let me know, I may send you an example code, or explain it. It's not that hard. You just need create a "For each" statement and go through Controls collection of a form. Than determine type of a currently selected control and by using "Select Case" or "If End If" you will need create variable of the type of current control, assign that control to a variable and do what ever you want with that control.

[taxes]

Hi,

"If I do understand you correctly, you want to make all textboxes empty?"


If that is what is wanted the most recent thread to cover it is;

http://www.vbforums.com/showthread.p...hreadid=288891

[::: XD :::]

Sorry,

haven't noticed that post while writting this one.

[taxes]

Hi XD

"Sorry,

haven't noticed that post while writting this one."


Don't be sorry. You may have hit upon what the guy wants to do

[Andy]

Originally posted by abcdefg
Oh ya visual studio.net has the best help ive ever seen in any software package. Those microsoft guys are clever bunch. The help is so worthless why even have it?

so...do you think it's good or do you not like it? you've contadicted yourself.

Basically, to get the form back to defaults(I assume that's what you mean), you have to write code that will go through each control (text boxes, listboxes, combo-boxes, etc) and either set the text to "" or in some cases you can call the emtpy() method or clear() method.

[Andy]

here are some really good routines I wrote (the guys in this forum helped me get these started way back when, what a great forum!!)

Public Sub ClearListBox(ByVal box As ListBox)
        'Purpose    :   Clear a list box of all items
        'Accepts    :   listbox control 
 
        box.Items.Clear()
 
    End Sub
 
    Public Sub ClearTabControl(ByVal tc As TabControl)
        'Purpose    :   clears all tabpages on a tabpage control
        'Accepts    :   control as tabcontrol
 
        For Each Ctrl As Control In tc.Controls
            Try
 
                If TypeOf Ctrl Is TabPage Then
                    ClearTab(Ctrl)
                End If
 
            Catch ex As Exception
                'Catch all errors
                ErrorMessage(ex.Message)
            End Try
        Next
 
    End Sub
 
    Public Sub ClearTab(ByVal Tab As Control)
        'Purpose    :   Clears an entire tab control of data
        'Accepts    :   tabpage control
        'Notes      :   this sub calls on other subs to do the work
 
        For Each Ctrl As Control In Tab.Controls
 
            Try
 
                'Scan any tabConrols first
                If TypeOf Ctrl Is TabControl Then
                    ClearTab(Ctrl)
                End If
 
                'Next, other Tabs
                If TypeOf Ctrl Is TabPage Then
                    ClearTab(Ctrl)
                End If
 
                'Clear all textboxes
                If TypeOf Ctrl Is TextBox Then
                    ClearTextBox(Ctrl)
                End If
 
                'Next, ComboBoxes
                If TypeOf Ctrl Is ComboBox Then
                    ClearComboBox(Ctrl)
                End If
 
                'Next, Groupboxes
                If TypeOf Ctrl Is GroupBox Then
                    ClearGroupBox(Ctrl)
                End If
 
                'Next, Listboxes
                If TypeOf Ctrl Is ListBox Then
                    ClearListBox(Ctrl)
                End If
 
            Catch ex As Exception
                'Catch all errors
                ErrorMessage(ex.Message & Ctrl.Name)
            End Try
 
        Next
 
    End Sub
 
    Public Sub ClearComboBox(ByVal Box As ComboBox)
        'Purpose    :   Resets a combobox to the first item in the collection list
        'Accepts    :   combox as argument
        'Notes      :   This doesn't delete any info, it just resets the box
 
        Try
            Box.Text = Box.Items.Item(0)
 
        Catch ex As Exception
            'Catch all errors
            ErrorMessage(ex.Message & Box.Name)
        End Try
 
    End Sub
 
    Public Sub ClearGroupBox(ByVal groupbox As GroupBox)
        'Purpose    :   Clear all textboxes within a groupbox control
        'Accepts    :   groupbox as argument
 
        For Each ctrl As Control In groupbox.Controls
 
            Try
                If TypeOf ctrl Is TextBox Then
 
                    ClearTextBox(ctrl)
 
                End If
 
                If TypeOf ctrl Is ComboBox Then
 
                    ClearComboBox(ctrl)
 
                End If
 
                'If TypeOf ctrl Is ListBox Then
 
                '    ClearListBox(ctrl)
 
                'End If
 
            Catch ex As Exception
                'Catch all errors
                ErrorMessage(ex.Message)
            End Try
 
        Next
 
 
    End Sub
 
    Public Sub ClearTextBox(ByVal Box As TextBox)
        Box.Text = String.Empty
    End Sub