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| Forms
Microsoft have made subtle changes to the way you handle forms between VB6 and VB.NET. Some of them have been made easier but others as you will guess are more difficult to remember. Its not the
complete list, there are others but I'll document them later. For many
of the descriptions below, imagine I have an application with one form called Form1
Instatiate Form
Whereas in the previous version, you could simply have a form in the project and activate it. You need to instatiate the form using the NEW keyword then show it.
VB6
form1.show
VB.NET
dim frmOne as form1 ' Or merge the top two lines as simply dim frmOne as new form1
frmOne = new form1
formOne.show
Form + Label Caption
In VB6, to change the caption at the top of the form, all you needed to do was say
VB6
form1.Caption = "New Title"
or
label1.Caption = "New Label Caption"
The Caption property has now been deleted from the VB vocabulary, you now use Text. Its Microsofts attempt at standardisation and making things clearer.
VB.NET
form1.text = "New Title"
or
label1.text = "Nre Label Caption
Changing Backcolor
In previous versions of VB, all you needed to do to set the background colour of a form was to set the backcolor property of a form with a number. Now its slightly more difficult. You get to choose
from a list of constants. Setting a form to a colour of your choosing is possible and below is how you would do it.
VB6
form1.backcolor = &hFF00FF
VB.NET
form1.backcolor = System.Drawing.Color. < You'll get a list of available colours that can be used.>
form1.backcolor = System.Drawing.Color.Translator.FromOle(&FF00FF)
form1.backcolor = System.Drawing.Color.Translator.FromOle(RGB(255,0,255)
Changing Mousepointer
Changing the mousepointer was just a matter of setting the forms mousepointer value, this time its slightly different.
VB6
me.Mousepointer = vbHourglass
VB.NET
Cursor.Current = Cursors. < You'll get a list of different mouse pointers available >
Form Events
Microsoft have renamed a few events and below is their old and new names. The parameters have changed slightly. It should also be added, the setfocus property of a control, or a form is now
simply FOCUS no need to include the set part of it.
| VB6 | VB.NET |
| Form_QueryUnload | Form_Closing |
| Form_Unload | Form_Closed |
| Form_GotFocus | Form_Focus |
| Form_LostFocus | Form_Leave |
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