#Vb net menustrip how to
#Vb net menustrip upgrade
#Vb net menustrip code

OpenFileDialog1.InitialDirectory = 'C:TEMP' Private Sub OpenToolStripMenuItem_Click( ByVal sender _ Listing 1: Click Open, select a file, and create a dynamic sub-menu off of the Recent Files menu. When you Open the file, it is read into a TextBox and a dynamic menu is created.ДЇigure 1: A simple text browser containing a multi-line TextBox and a MenuStrip.

#Vb net menustrip code

The code in Listing 1 is plain old vanilla VB.NET code behind a simple form with a File menu, an Open sub-menu, and a Recent Files sub-menu (see Figure 1). The basic behavior is to open a file and create a dynamic sub-menu with the name of the file and add that menu to the MenuStrip. Even Visual Studio tracks open files and projects in вЂњrecentsвЂќ menus. ~wink~ Creating a Recent Submenu with the MenuStrip

#Vb net menustrip how to

If you already know how to do all of these things, I wonвЂ™t mind if you wait for the next article. ItвЂ™s also cooler and better housekeeping. After the half-it is football season after all-the dynamic menu is added to a Command class, making the use of this technique a matter of importing the command class in any future application. If you know how to do that, I encourage you to read the article anyway.

In this article, I will show you how to dynamically add ToolStripMenuItems to a MenuStrip. The MenuStrip is like a menu, but if you want to add a sub-menu itвЂ™s not as easy as invoking Add with an instance of a menu item. For example, if I have a Menu and it has a collection of element-like sub-menus, I am going to look automatically for a collection property and an add method. Re-inventing the wheel makes sense if you go from a rock wheel to a rubber one, but like things are easier to adopt when they are new if they are used like similar things that exist. I am not just talking about patterns like the Gang of Four GoF patterns I mean simple ways that things work too. Patterns are something we can get familiar with, consequently making like-things anticipatable and easier to use. VB Migration Partner automatically accounts for all these minor differences, so that the generated VB.NET is guaranteed to work like the original VB6 code.Patterns exist for a reason. Second, the Visible property of ToolStripMenuItem and ToolStripSeparator objects return False both if you set it to False or if you set the parent menuвЂ™s Visible property to False. First, when a top-level menu becomes visible all the controls on the form are shifted down to make room for the menu likewise, when a top-level menu becomes invisible, all controls on the form are shifted up.

However, there are two important differences. NET MenuStrip, ToolStripMenuItem, and ToolStripSeparator objects all support the Visible property. The VB6 Shortcut property maps to the ShortcutKeys property under VB.NET. However, this property doesnвЂ™t affect the menuвЂ™s appearance or behavior. VB Migration Partner supports this property, so that the VB.NET code always compiles correctly. The NegotiatePosition property isnвЂ™t supported by. VB Migration Partner is aware of this difference and fires the Click event at the right time even for dropdown menus. If you need to handle the Click event of dropdown menus you should use the DropDownOpened event instead.

#Vb net menustrip upgrade

For this reason, event handlers generated by the Upgrade Wizard might be executed at the wrong time and cause runtime errors or bogus results. NET fires the Click event before the dropdown menus becomes visible. VB.NET menus support the Click event however, in VB6 the Click event of dropdown menu fires immediately after the menu becomes visible, whereas. VB Migration Partner can correctly handle these assignments and correctly transforms a menu element into a separator (or vice versa), depending on the value being assigned to the Caption property. If you assign a вЂњ-вЂњ (dash) character to the Caption property, you actually transform the menu element into a menu separator under VB6, even at runtime. NET, but there is an important difference. The Caption property maps to the Text property under. VB Migration Partner handles this important difference internally and generates VB.NET code that behaves like the original VB6 code in virtually all cases. (A VB6 separator is a plain menu object whose Caption property is set to the вЂњ-вЂњ character.)

Separator bars are translated as ToolStripSeparator objects.

Drop-down menus are translated as ToolStripMenuItem objects.

Top-level menus are translated as MenuStrip objects there is only one MenuStrip object in each form, whose child controls are drop-down menus.

VB.NET uses three different objects to render the VB6 Menu object. Top-level menus, drop-down menus, and separators