Make The App Do Something When A Form Has Loaded Up, Or Clicked?
Nov 4, 2011
So just to get better at VB, I'm trying to make this application that takes pictures from your clipboard and uploads them. I'm adding a label, that will tell you if there's anything in your clipboard or not, but the problem with that is that I don't know how to make it check the clipboard all the time.I'm still a beginner, so I only know how to make the app do something when a Form has loaded up, or clicked etc., but how do I make it so it checks the clipboard when it has changed? If I can't do it, how do I make it so it checks the clipboard like maybe every second. Do I need to use threads (I'm not sure, because I don't quite fully understand threads).
I also need to know how to make the same button create a folder to save a txt file in. I havnt yet figured out how to save changes made into my program, that way next time i open it, i can continue where i left off.
how to do array of textboxes when a user input a number of textbox to be loaded and when the button clicked, the array of textbox that the user enters will appear?
I have a program I've been working on for some time now and I'd like to try to streamline it somewhat. I have a main menu form that has a split panel, in the left panel is a treeview that displays forms you can open and when one is selected, it opens in a child window in the right panel. Each time I open form I called DWNForm, it does a series of dataset loads which are the populating items for a series of listviews.
What I would like to do is have these datasets load once during the mainMenu load and then have the DWNForm be able to access the datasets once it is called from the treeview selection.
I am trying to use a progressbar to show on main form and then finish when next form is loaded, I have got this code.
1. When I click on button, it must open next form, but the next form must only open when the data in my list box has been loaded from Access Databse. When I run my program, it only shows the progressbar and don't open the next form.
Main form code:
Public Class Main
Dim PB As ProgressBar
Private Sub main_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load End Sub
I am literally BRAND new to VB, I have Vb 2010 express.I have been trying to use [code]The box literally spams, how do I make it only pop up once Also, how do I make a progress bar reset after it's been fully loaded?
I'm trying to make a list of flight plans loaded into my program, with each flight plan having a list of waypoints along the route, along with a few other properties associated with the flight plan. Each waypoint has its own associated properties, i.e. waypoint ID, waypoint type, location, etc.
Here's the declarations:
Code:
Public Class WPinfo Public WPType As String Public WPID As String
[Code]...
How do I implement the List methods to access the list elements, and add, remove, etc? The way I'm doing it now just gets me an 'Object reference not set to an instance of an object' error during runtime.
I'm working on a VB.Net windows application.In the top half of the form application, I have a vendor number with a "GO" button and in the bottom half I have a list of tab pages. We have built the application to only go to the database and display data when the tab page is selected by the user. If I'm in one of the tab pages, and I change the vendor number and click the GO button, the data on the current tab page goes blank (it does not refresh). I have been told that I have to find a way of programmatically clicking on the tab page's tab a second time. How do I do that? I've tried using _Selected event, _Selecting event, _Click event. I've even tried to do a .Focus() on the tab page itself. Nothing seems to work to reload the new data without clicking off of the tab and back onto it manually.
I wonder how to make the Radiobutton ON when webbrowser is fully loaded, and the Radiobutton OFF when the page is loading. It's like boolen. Im using Webbrowser1.If you do not understand im mean this:
1. Click on a link on a site.
2. The Radiobutton gone OFF.
3. When the page is 100% loaded, the Radiobutton gone ON.
I want to draw a histogram when Form2 is loaded, I load Form2 using button of Form1 It didnt work, Form2 is loaded, but no image...i dont know why here's the code
Private Sub Form2_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim img As Graphics = PictureBox1.CreateGraphics
Is there a way to check if a form has been loaded yet? I saw in C# they have a isLoaded property, but it doesn't seem to exist in the VB.Net Form class?
I am trying to create an inherited form- when I go to add it, I get the following message- "CustomerInformation --- The base class 'Object' could not be loaded. Ensure the assembly has been referenced and that all projects have been built"
basically I am trying to expand my skills in visual basic 2010 and i want to find out how to make a kind of drawing program.The idea is when you click somewhere on the form a bit of dirt will appear at the location of the mouse.This code that I wrote did not seem to work:
Public Class city Private Sub city_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click Dim dirt As New PictureBox
I've few Button on my form and when i press these button, Music has to play, and collect the word in label1 like what ever button i pressed those button's name has to catch on that label and make a string and there is one more button that button has to play that whole string music which one is in label1.I've done 1st part but i don't know how to make string and play it when button click.
I want to make a progressbar that runs when a button is clicked. However there is also a checkbox that affects the whole thing.If the checkbox is checked, the button works and starts the progress bar.If the checkbox isnt checked, an error message comes up when the button is pressed.
my webbrowser is getting better and better. Now, I have a minor proplem I tried to fix, but it will not work.
I am using this code to open a new window in my browser instead of the default, but when it opens the new window, it navigates to "about:blank" how can I get it to navigate to the site clicked?
Private Sub WebBrowser1_NewWindow(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs)
I am learning VB.NET and as a first task I am creating a login form. I've been trying to link it to another form once a correct username and password are entered. However, despite that I still cant be able to hide it or unload it once the next form is loaded.
Here is the Code Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click If UsernameTextBox.Text = "chris" And PasswordTextBox.Text = "chrispass" Then Me.Hide() Form2.Show() End If Me.Close() End Sub
The Form2 appears as coded above but the 'Me.Hide()' manages to hide the login form but then it appears again.
I have a form that contains two datagridview. I need to load the form first or anything that shows a "loading please wait.." form while the two grids load.Basing on your experience what are the ways to do this?
