I would like to be able to fire/trigger an event when the form is no longer the top most window (ie the window that is on top of all other windows), and then close the form with me.close()
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I have a main form that has a dynamically generated treeview and also a panel control. Depending on the selection made within the treeview the panel docks 1 of three diffrent usercontrols which are full sub forms(done for ease of modifing design of sub form rather than layering panels on top of panels).Upon button click withing usercontrol i wish to trigger event within main form.For example delete button wich then triggers to remove current selected node from treeview. code for 1 of three diffrent user controls
Dim ctrlQ As New QuoteUC(TrViewQuotation.SelectedNode)
PnlSubFormDock1.Controls.Add(ctrlQ)
Code for delete button for which i need to raise event.
If MsgBox("Are you sure you wish to delete this customer ?", vbYesNo, "Delete Record") = vbYes Then
Deletecustomer(n)
End If
If I want to trigger an event every hour, I would have to set the timer interval to 3600000. That seems a bit crazy. Is there a better way to trigger events in these "longer than X second" type intervals?
View 11 RepliesModule Module1
Sub Main()
Console.WriteLine(CInt("123.656"))
End Sub
End Module
In the above code as soon the the output appears in a window,the window disappears....How to solve this problem?Do i need to add some code to hold the output window for a longer time?
I'm trying to set form size longer, but after building the project form resizing.
View 1 RepliesI have an application with several forms. The form Main.vb has always been editable in the designer. However, this has changed. The icon in front of the name has changed to a module icon, and the designer and code are no longer found. When I run the application, it still functions as expected.
View 4 Repliesi have to develop a software for motorola mc9090 that reads barcodes and rfids simultaneously, so i need to catch two different triggers: the one on the keyboard for barcodes and the other in the backside for rfids.the problem is that i didn't find any sample that illustrates how to set the trigger to read only barcodes, i found something on emdk 2.5 samples that shows how to set the trigger to read rfids but nothing for barcodes. So when i press any trigger the barcode reader is always enabled with rfids reader.Does exist a way to manage them with separated triggers?
View 1 RepliesI have this code in my ViewProductsInventory (which is called from my MainForm by ShowDialog):
Private Sub ViewProductsInventory_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.Tb_inventory_datesTableAdapter.Fill(Me.InventorySysDataSet.tb_inventory_dates)
Dim inventory_date As Date
inventory_date = Me.cboInventoryDate.Text
[Code] .....
Upon clicking the editbutton will execute EditForm.ShowDialog()
And in my EditForm the record will be updated, after which will trigger ViewProductsInventory.btnSearch_Click( ViewProductsInventory.btnSearch, EventArgs.Empty)
And then the error "Conversion from string "" to type 'Date' is not valid" occurs.
I tried Msgbox(Me.cboInventoryDate.Text) and returns nothing. I'm assuming that my cboInventoryDate is not being populated at this time therefore when btnSearch_Click is triggered it receives nothing.
i have a little problem in calling the button1_click event of form1 from my form2.whenever i use call form1.button1_click() it gives me an error saying argument not specified for parameter 'e'. can anyone please assist me on fixing this?
View 2 Repliesi'm trying to trigger control events from outside the form that the control is placed. The idea is test of that control.
How this can be done.
For example I'm trying this
Private Sub SendGenData(ByVal ContName As String)
Dim testControl As Control
For Each testControl In Me.Owner.Controls
[Code]....
I've been playing with VB.NET for a couple days now, and I was looking into key input controls, now I've managed to have it react to keyboard buttons being pushed inside the main form (wasn't hard), where it counts total amount of keys pushed, not what keys are pushed etc.
What I'm having a harder time is finding a way to have this same functionality even if the form isn't active (for example when minimized to the system tray). I did find a similar question on these boards, but it was regarding hotkeys and that user was just referenced to the hotkey API, which is not what I am aiming for.
I am creating a form and I have a label that will display the user's name, but what I need to do it trigger a text box when the application opens that will allow the user to type in their name and then assign that value to the label in my form. How do I trigger the text box and assign the value to my label? My label is named lblStudent.
View 11 RepliesI'm trying to trigger when the mouse leaves the form, but I don't want to trigger the mouseleave when its over controls; as it is doing at the moment. Can you suggest ways to keep triggering the mousehover over form while on controls? but mouseleave works still when the mouse leaves the form (not when hovering controls) ?
View 1 RepliesI have one form (FormA) that fills a combobox with data when the on-load event is trigged.In that combobox, I can select "New value" which opens another form (FormB) on top of FormA.On FormB I add the new data and saves them to a Database.Everything OK till here.I then close FormB.... and return my attention back to FormA.Now I would like to reload data into the combobox, but everyway I have tried, it will not work.
View 5 RepliesCan Windows Form Trigger when a control has been modify or not ? I mean i have 3 panel and inside of those panel have a textbox, how am i able to find whether some of the textbox where modified in a specific panel? i.e panel 3 textbox2 has been modify i want that i have a notification that panel3 textbox were modified
View 1 RepliesFor a small project I need the possibility to "trigger" a function in a Window-form-application from a Service. So there are 2 program's. One is the visible Form application with textboxes and buttons and so on... The other is a sort of service program that runs on the Windows Service account.
Actually the second program is a command-line tool that gets fired by a PHP script from the Apache server. Because the command-line tool runs in another "environment" then the Windows-form-App, it is NOT possible to communicate (trigger) with both apps.
I know I have to use IPC (InterProcess Communication) and I have download the dozens of sample apps, but I still can't get it to work.
PLEASE can someone give me some sample code, or perhaps sample program(s) to help me out?
I think it's really easy to build what I want, but for me it's a no-go :-(
So for example it has to work like this:
PHP script (running at Apache server) runs a "console/service" app (already working) which "triggers" (via IPC) a already running Windows-Form-app (also already working app) that for example shows a MsgBox with the text in it that is sended by the "console/service" app.
how to trigger a refresh on a form when an update occurs in my business logic.
This isn't an issue for 95% of my forms because they call the update from the form that needs to be updated. However, In some cases an inner form does and update that requires an outer form to reflect this. I've read about Handles, Delegates, AddressOf etc etc and I'm drowning in options.
In simple terms, I need three things to happen
1. Form2 (inner form) has updated info, so the user clicks Save
2. Save calls my Data Access Layer and updates the database
3. Form1 (outer form) has a DataGrid that needs to be notified so it can update via a Sub LoadGrid
It's stage 3 I can't do. How do I trigger a Sub in Form2 (LoadGrid) to do the refresh from an external class.
I have create a project with one main form window and also i have to use a number of other forms as well. now i want to open these other forms inside the main window and not outside. I'm using Visual Studio .NET 2010 as developing environment.
View 1 RepliesThe code is listed below which hopefully illustrates what I'm trying to do:[code]....
View 12 RepliesHow to catch the event of the window close button(red X button on window right top corner) in wpf form ? We have got the closing event, window unloaded event also, but we want to show a pop up if he clicks the close button of the wpf form.
View 1 RepliesAs Autodesk is going to discontinue VBA for their Inventor product in the near future I have been looking at other ways to run VB.NET in Inventor. To date it doesn't look like VSTA will be the replacement. Automation from an External VB.NET app is certainly possible, but leaves something to be desired for speed and integration. Compiled Add Ins are the Cadillac of choice but can be a royal pain to debug and develop. Autodesk now provides a lightweight VB.NET script interface called iLogic. It's main purpose is to allow extreme customization of Solid Modeling parts. The code actually resides inside the Part Model file.
[Code]...
Iam creating an application. i have a main form it has 5 buttons i have created 5 more forms. my aim is to show a particular form for every button the form is opened in a new window i dont want to open in a new window it should be embed in the main form when i click anthor button it will show the related form in place of previous form
View 2 RepliesIam creating an application.i have a main form it has 5 buttons i have created 5 more forms.my aim is to show a particular form for every button the form is opened in a new window i dont want to open in a new window it should be embed in the main form when i click anthor button it will show the related form in place of previous form?
View 1 Replieshow can I use main form like MDI parent form in window application?
View 1 RepliesI haven't touched a project in about 8 months. It's ongoing for work, but hasn't really been published fully so it gets worked on in my spare time. I went to recompile and the build failed. It had previously worked. I can't figure out why. Part seems to be due to AxOWC11 being recognized, but it shows up in the namespaces. I'm looking for the .dll that shows up as AxOWC11.dll, but I'm not seeing any. I do have one that shows up as AxInterop.OWC11.dll and I do have just a OWC11.dll in my list. I've posted some of the errors below.
Warning 1 There are updated custom wrappers available for the following referenced components: Graph ,MSComctlLib.
Warning 2 Interface 'IOleCommandTargetArgument' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 3 Interface 'IAddinClient' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 4 Interface 'TextFormat' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 5 Interface 'ViewSurface' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 6 Interface 'IPivotCopy' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface. PE Files
Warning 7 Namespace or type specified in the project-level Imports 'AxOWC11' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases. PE Files
I'm on a machine with Windows XP using Visual Basic 2008 Express Edition
I am trying to add records from an Access Database into another Access Database using DAO recordset.The VB.NET program would add the records until it hits random stop and error says "Object invalid or no longer set". what would cause this? The recordset contains 7 million records, but it only added approx 6000. Next time i run the program, it would add different number of records again.
View 3 RepliesI think I have accidentally changed something in the properties of a form, but I am receiving this error now, and none of the 4 forms will load.
System.InvalidOperationException was unhandled
Message="An error occurred creating the form. See Exception.InnerException for details. The error is: InvalidArgument=Value of '52' is not valid for 'index'.\r\nParameter name: index"
Source="WindowsApplication1"
I have run into a small little annoyance while writing a program. I have a bunch of controls on the form and while trying to figure something else out they all got parented to another control, using undo I unparented them from that control however now when the control is clicked the code that is in the sub for them does not run at all. If I double click the control it generated an entirely new sub with a number i.e. what was "Private Sub NumericUpDown1_Value Changed" becomes "Private Sub NumericUpDown1_ValueChanged_1".Near as I can figure the subs with the code are no longer associated with the controls.Is there a quick way of fixing this or am I stuck copy and pasting the code from each sub into a newly generated one?
View 3 RepliesI know .NET no longer supports DDE however unfortunately most "Finance" related programs (ie, charting and data vendors) use DDE to tie into their data. (Ie, esignal, Marktfeed etc). I've been toying around with NDDE however I'm having a hard time implementing it...unless I'm just making 1 request then it's fine. My question is would it be possible to take VB6 Label Control since it has the "Linkmode, LinkTopic, LinkItem, Label_Change" Properties/Methods and events in it....and create something like DDELabel.dll via Activex control project then use that as part of VB.net?
I tried doing it via the Control Wizard then using it in .NET however I know for a fact I'm not doing it right. Perhaps if someone much more competent could attempt it see if it does give the DDE functionality when used in .NET they can point me in the right direction...
I wrote a DLL a year or two ago on my old computer that worked well for a long time. I moved on to other things, then came back to it recently and discovered that the code doesn't run on my new computer. The problem seems to be with this line: [code]
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