Create The Children Form Within A Same MDI Form Every Time?
Feb 20, 2009
i MDI form there, i was create the children form within a same MDI form every time i click on the button to show the form, which means i create a new form, how i do for ensure that each time i click on the button there will not create a new form is the form is really exist? how to avoid duplicate of the form will not exist twice?another 1 more question is also about the MDI form, everytime i create i new form, the new form is covered by old form, how i do that the new form i created will always show infront, other 1 will show at behide
I have two mdi children forms open. I would think that clicking on the non active form would change the focus from the active form to the form I just clicked on. It only does this if I click on the title bar. Then the focus changes. But if I click on a control on the non-active form, focus does not transfer.
I am trying to create an application. I am using MDI forms method to navigate throughout the application. However, when a user clicks a button to create a new child or when the application execute this code
I'm trying to create a MDI DockManager component. Basically what it should do is take each MDI child form and turn it into a TabPage. Instead of showing the MDI forms, the main form then hosts a TabControl with each 'form' as a TabPage.I expect this to be quite a big challenge, and I know I will probably not manage to do it... But it would be a great control if I could!Well, for this to work I need my component to know when an MDI child form is added / removed. As far as I know, there are no events the form throws when this happens... The forms are not added to the Controls collection (are they?!) but the user merely sets the MdiParent property of the child forms.
The only useful event I could find was the MdiChildActivate event, which should fire when an MDI child is activated. I am pretty sure that is not enough for my idea. It might be enough to detect new MDI child forms being added, but if one is closed (eg, removed) there is no way I can detect that.So, I'm basically looking for a way to detect when an MDI child is added or removed from a form. Is that possible at all?
I am trying to create a list that will add information each time someone submits the form. I keep getting the error:Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index..I know I am getting the values passed from the Class since I can output it to a message box. But when I try to create the index it crashes every time.[code]
I'm experimenting with a plugin architecture for my company's internal business system. I have managed to read all .DLLs in a Plugin folder which implement a specific interface. What I am trying to figure out is the best method of communication between the "host" MDI parent application and forms that will be in the .DLLs which I intend to make MDI children.
Currently, I am returning just ToolStripMenuItem objects from the .DLLs to add to the MDI Parent. I've also tested that events wired in the .DLLs to the ToolStripMenuItems do propagate to the code in the .DLLs. I've also managed to return a Form object via the interface and open that form, as the Plugin folder is being "scanned".
However, I am not clear how I would make these forms MDI children. Also, any other forms living in the .DLLs will also have to be MDI children. I created a VS 2008 Addin project just to see what's going on, and it seems that the Addin accepts an Application object on which it adds to the ToolStripMenuItems and does other operations. The code to build the menu inside the .DLL. This is opposite of what I have done so far, where the MDI requests a ToolStripMenuItem from each .DLL and adds the returned object to its own menu.
Would designing my plugin architecture to accept an application object in the same manner the only way I could get forms to open as an MDI child? Am I asking for other, currently unknown to me, headaches by NOT passing in the application object to the .DLL?
I've got a VB.Net form application that dynamically loads user controls based on which navigation link the user clicks on. I'd like to make it easier to use at Design time by putting a link of some sort to open the User Control at design time. The link would go onto the form in the space where the User Control will be going. This just saves a little time from having to browse through the files to open the correct file.
I have multiple forms and have multiple declarations that I need for all the forms, is there a better way than declaring them each time on each form? Can a .dll do this, if so does it require the .dll to be a seperate file than the final .exe file. Or is there someway to reference the variables on other forms?
Below is the exception code info. when I try to make form visible for the first time from another form then I get an exception code. something like 'a required variable not set'
I tried using the web browser control for the first time.The problem I had was that the size of the web browser defaulted to the size of the form. Even when I tried to downsize the webbrowser ( via properties ) it still filled the entire form. I also tried to drastically increase the size of the form( again via the form's properties ), the web browser still filled the entire form. how to create a form where the web browser only takes up half the space of the form.
Im trying to create a stopwatch in one form and another form show my progress bar using a combo box for mins and seconds to show the progress bar on form1 1
I want to create an IMAGELIST in a main form and add to it then have it accessible within a child form. I found several MS examples on database shared access but this is NOT the concept I am after. Straight forward:
I have been making a webbrowser for a while now, everything works well, except i am unable to make the 'open in a new window' button work right. So far i have managed to get a new instance of my form to open with the right url, but i am unable to keep that new form open when the orginal parent form closes.
Code:
Private Sub WebBrowser1_NewWindow(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles WebBrowser1.NewWindow e.Cancel = True Dim Href As String
Is there a way once you create a child form within the parent form, and then you click on the title bar of the child to change its position, is there a way that when dragging it if it goes over the bounds of the parent form, it will stop and not move any further. I just worry with my code that if you drag too far you wont see the title bar to drag it back. I hope that explains my problem,
I have create a Data base in Microsoft Office Access 2007, and I want to make the same databse in Visual Basic 2005 Express, but the problem now is the Invoice form, it must have a form with subform to represent two deffernt tables or query?
How can i programmatically create a treeview consisting of several nodes and each node has several children.I want to read the nodes and children from a table and fill them accordingly, so how can i do this?
How do I dynamically create a form from within an existing form.i.e. when a user clicks on a button on an existing form that I have, another form is dynamically created and shown modally for the user to enter specific data or as a dialog box to advise the user of a specific result.
Hello I want to create a windows form application program that can create games something like Gamemaker or Klik & Play (butt less advanced) with D&D "Drag and Drop" events and actions.
I have produced an application which works with datasets but I now wish to provide the user the ability to add and admend records within the database.But i wish to do this in a seperate form.My current dataset instanciates classes onLoad.Should i try passing the Dataset to the new form class? although I have the problem where by when i pass the dataset to the form class using code below i get this problem:[code]Should i just create a create a new connection to the database and produce a new dataset for this form? or is there a better way to do this?
I have used VB (versions 2 - 6) through many years; however, I am crash-course training myself into the VB2008 / VB2010 world kicking a screaming. I would like suggestions as to what SQL database access method should I focus more on in my learning process without making me feel that I'm a million years behind. I know I have WinForms where I can create a datasourse and drag / drop fields or tables on a form to create a grid (not really what I'm looking for).
My trouble isn't so much designing the form but in how I access the database. Theres XML, LINQ to SQL, ADO.NET, and many other methods. Not only do I need to grasp these methods quickly but I also need to know what type of projects I should create. What I mean is...I was thinking that I would design a WinForm app; however, I see that there are WPF apps and others to chose from. This is getting deep. I know it depends on the project that I'm working on. My plans are to write an app based off of either an SQL Express 2008 or SQL Server 2008 database. This first app will be standalone for now but may later become multi-user. I know I'm far behind on my learning curve coming from VB6. I have read a bit on VB2005 / 2008 / 2010. I own both VB2008 and VB2010. I use VB2008 at work. I know ADO.NET is still alive but by what I read online, it's a dying method and is only kept for backward compatibility. XML and LINQ to SQL and other methods are all pretty new to me.
Im Using VB 2008. I have MsgBox() statements in all Mouse & Form Click events to TEST & NOTHING FIRES during Form Load when I click on Form or Button Controls !!! The Form Load event contains code for Displaying the Label.Text control many times with changes in the Text to simmulate annimation.
In my project i have 4 Forms including main form. Form2 is open through main form then Form2 remain active until user close Form2.Mean to say Form2 not allow any other form active until user closer form2.
I have finished constructing my form and have completed my code. I have built the project with no errors, warnings or messages. None of my code is flagged up as erroneous. Yet when I try and run my app to test it, the form does not display at all!! It did, but it doesn't anymore. The only thing I have added to my form since it did display correctly is a couple of Month Calender controls and a couple of buttons, with a piece of code behind each control.
I have not altered any properties for the actual form itself..
I would like to display a PropertyGrid on a form at runtime to simplify some testing that I am doing. I have it working except that the PropertyGrid does not pickup any extender provider properties (eg ToolTip). How do I make it aware of any extender providers also?
