Changes in Controls from VB6 to VB.net
By: Steven Holzner in VB.net Tutorials on 2010-11-17
In fact, the Caption property no longer exists; it's been replaced by the Text property. There are other changes in controls from VB6 as well-and plenty of them. I'll take a look at a number of general points here to start us off.
There are no more control arrays. In VB6 and before, you could assemble controls into arrays, and handle events from all those controls in one place. But in an effort to standardize the way event-handling procedures work, VB .NET has removed support for control arrays.
Also, in Visual Basic 6.0, coordinates for forms and controls were expressed in twips (1/1440ths of an inch); in Visual Basic .NET, coordinates are expressed in pixels-and only pixels, you can't change to other scales.
Default properties for controls are no longer supported for objects, which includes controls, in VB .NET (unless those properties take arguments). For example, in VB6, you could write:
Text1 = "Hello from Visual Basic"
This would assign the text "Hello from Visual Basic" to the Text property of the text box Text1, because Text was this control's default property. In VB .NET, however, the default name for this control would be TextBox1, and if you want to assign a value to its Text property, you must do so explicitly:
TextBox1.Text = "Hello from Visual Basic"
There are also changes to help internationalize Visual Basic; for example, you'll now find that controls have an ImeMode property, which stands for Input Method Editor, allowing controls to accept input in various international modes, such as Katakana.
The default names for controls have changed-for example, in VB6, the default name for a text box was Text1, in VB .NET, it's TextBox1; List1 has become ListBox1, Command1 has become Button1, Option1 has become RadioButton1, and so on.
You'll also find changes in the names of many events (DblClick is now DoubleClick, for example), properties (selText is now SelectedText, for example), and in the arguments passed to event handlers. You also can now anchor and dock controls. We'll see other changes on a control-by-control basis, but these are some to keep in mind.
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
- Your name, rating, website address, town, country, state and comment will be publicly displayed if entered.
- Aside from the data entered into these form fields, other stored data about your comment will include:
- Your IP address (not displayed)
- The time/date of your submission (displayed)
- Your email address will not be shared. It is collected for only two reasons:
- Administrative purposes, should a need to contact you arise.
- To inform you of new comments, should you subscribe to receive notifications.
- A cookie may be set on your computer. This is used to remember your inputs. It will expire by itself.
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
- Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.
- You acknowledge that all comments express the views and opinions of the original author and not those of the administrator.
- You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy.
- The administrator has the right to edit, move or remove any comment for any reason and without notice.
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
- Data Science
- React Native
- Cloud Computing
- Java Beans
- Mac OS X
- Office 365
- Tech Reviews
Changes in Controls from VB6 to VB.net
Throwing a Custom Exception in VB.net
Throwing an Exception in VB.net
Using Multiple Catch Statements in VB.net
Exception Filtering in the Catch Block in VB.net
Raising an Exception Intentionally in VB.net
Getting an Exception's Number and Description in VB.net
Using On Error GoTo 0 in VB.net
Using Resume Next and Resume Line in VB.net
Preserving a Variable's Values between Procedure Calls in VB.net
Specifying Optional Arguments with default values in Procedures in VB.net