I'm trying to figure out how to make a dynamically scaling/resizing 2d chart on a form as my 1st trip into graphics. Most 3rd party addons/DLLs are of no use to me as the bank I work for is unlikely to allow any of those to be used in my projects.
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I have a timer program. Initially, the font for the time is the correct size, and when I click "start", the time is the right size too(I had set the initial size to 26 in the properties menu). When I click "break", once the time is up, it displays "Break Over!!" to fit the label(because I changed the font size). Then when I click "start" again, the font has shrunken, even though I set it back to the original size of 26. Why is the font size for the timer not back to it's original size when I click "start" after I have clicked "break"?[code]...
View 2 RepliesI am using a timer with 1 second interval, that calls a function (for example) to download a file. So every one second the following happens in the timer.
label1.text = "File " & fname & " downloaded"
label1.refresh
call processfile(fname)
' only if i use application.doevents label refreshes properly.
Now inspite of using refresh, the label does not refresh properly. For example: for the new text you may see the entire text but if the older one has few extra char then you see that also. in other words you see new text and part of the old text. I am so surprised as to why is this happening.In vb6 when we used to use refresh the label used to refresh properly.
Lets say i label "label1" , and 2 buttons named "button1" and "btnRefresh " [code]So , when user press the button 1 , the text will change. But what should i put inside btnRefresh to reload the forms ? and display the default label.text = "Form Load" ???
View 9 RepliesWhat is the best way to resize & move a form using just VB commands? I have a form that I need to set the Height and Top props, problem is that takes two calls and there is a noticable flicker. I tried using SuspendLayout/ResumeLayout, DoubleBuffered, swaping the top and height calls around, etc, but nothing seems to help. The test forms only have one small listview and one or two buttons. [Code]
View 2 RepliesI have a parent form that has a combobox. Whn the form loads I get the data from the db and bind to the combobox. that works fine and here is the code I use in form load to cause this to happen: [code] Now if there is not an Account Type, I have a button that will pull up a small form to allow the addition of an account type. The popup form adds the data back to the database just fine, but I am now trying to get the combobox to refresh its data. So I call a public Sub that is located in the parent form to from the popup form to accomplish this task and I have walked the code and the sub is called and appears to work correctly, but the new data never appears in the combobox. Here is my public sub that i call to try and refresh the combobox on the parent form. [code] But when I go back to the parent form, the combobox is not updated with the new account. How can i get the combobox to refresh from the database with the new data?
View 4 RepliesHow would i make so when the user resizes the form the controls on the form resizes to what ever(ex: form become full screen textbox is full screen.
View 2 Replieswhen i try to minimize a form and restore to normal the form is being resize.It's resize getting extending a form when time to minimizing a form and restore it.my form is set to formborderstyle is fixedsingle and i'm using namespace. why is hapening like that...i don't know why
View 10 RepliesI am working on VB.Net. I have a sub form with a datagridview, that is being loaded with the criteria taken from another form. Hence this form is called with parameters.
Here is the code that calls the sub form.
Code:
where ds is the dataset to fill the datagridview and rb is the string from a radio button on this form.
Here is the code in the sub form.
Code:
Now, I need to refresh this sub form every -- minutes, depending on how the user wants it to be. For this I have given a NumericUpDown control to select the mins. All this works fine. But how do I refresh the dataset and the datagridview?
How can I Make the contents of a form resize with the form?
View 2 RepliesI am looking for a code snippet which opens a image, creates a clone of this bitmap in memory disposes this opened image so that all handles are closed.
Usually we can open a bitmap using this[code...]
the following code however keeps the Image File locked until the application is running, any suggestions how to dispose it properly. (So that no handle is left open )
Things i already tried: use dispose method of bitmap <= doesnt work (need to write implementation)
Using Block also doesnt work.
Using VB.Net[code]...
When textbox1.focus() at that time i clicked Control + Enter key, the formid=55 is showing instead of formid=54.
I have a windows form with listboxes, buttons and a checkbox. It works fine at home but when I take it to school it doesn't display properly. I have been given full privileges and the .NET framework V3.5 is installed. I have all my buttons/checkboxes on the right hand side but they don't display like they aren't even there (there is no extra blank form space either). The form sized wasn't locked
View 3 RepliesI am trying some Uiculture change functionality.In that I need the name and text of controls in a form to change the culture.I got some Demo project and it is in C#. I tried to make the same functionality with the C#.net and Also using VB.net. But the below mentioned code returns control name with an underscore as prefix. But I don`t want underscore .Code is actually written in Class library.
code is written below
Dim fields As FieldInfo() = form.[GetType]().GetFields(BindingFlags.Instance Or BindingFlags.DeclaredOnly Or BindingFlags.NonPublic)
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Using VB.Net (Windows Application)
In the Form, textbox, combobox etc....
-> When i open the windows form, if i press ctrl + Enter, then pop windows is opening
-> if i enter any data's in the text box, then i press ctrl + Enter, then pop windows is not opening
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Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.KeyPreview = True
End Sub
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When the form load, ctrl + Enter shortcut key is working, once i enter or select any data's in the form, then ctrl + Enter shortcut key is not working (not showing the popup windows)
I login webservice then upload files then i download files i do this inside the looping in the processing i have to change the picture box picture the Timer Event fires but the picture does not changes it seems form doestn't refresh
View 9 RepliesI have created a simple VB.NET application with one form and a few modules. When a user clicks on a run button of the form the application starts and goes through differet cycle, while updating the user on status bar, runs for less than four hours.
The application works fine, it gives desired result. However, it is not able to refresh the user form, meaning status bar remains same after some time (it suppose to increment). Even when I take mouse on the form it shows timer symbole instead of default one.
My application commands another device using GPIB. Basically, PC running my application commands the device. If I look the display of device it gives correct information.
I have a form, with a datagridview. I can see the data and the related records in the DGV.I have another form that this one calls to add a new record. I need that because there are some specific parameters i need to control. But when the focus returns to the original form, I can't see the new record, even though it is there (I see it in the database).If I close the form and enter again I can see it, that is not what i want.How can I refresh the tables after the other process adds data to them?
View 2 RepliesI'm using Mysql database and Visual Studio 2005. I've got a form with datagridview, After making the changes in the data, it is saved in the database. The data gets saved in the database, but the modified data does not get displayed in the datagridview. Only if I close the form and open it again, the changes are displayed. I want to provide a button (refresh-button), which on clicking will refresh the datagridview, so that the modified data is displayed without closing the form.
View 8 RepliesI have spent a long time trying to find a solution for the problem I am having with comboboxes within a child form. I'm sure this must be a Microsoft error and not something I'm doing wrong..The best way to explain the problem would be to tell you what I have done so far:
If you open a new Project in VB and add two Windows Forms. Form1 will be the parent. Form2 will be the child.On Form1 add 1 x panel(Form2 will open up within the panel so make sure the panel is big enough to fit Form2) and 1 x button. The only code needed for this form is:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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Now run the program and click button1 to open form2 (form2 should now open within panel1).
The comboboxes and textboxes lose some of there functions for example:
1. You cant set focus on combobox without hitting drop-down
2. You cant highlight text properly in either the combobox or textbox.
3. You cant set the cursor index position using your mouse in the combobox or text box.
Does anyone know a way around this?? Mainly for the combobox as I've got some functions working for the textbox.
I thought Me.Close() works, but hey I'm a noob at this. Right now I'm using:
Form2.Show()
Me.Dispose()
Me.Close()
but now that I've published it, I have to pull up my task manager and do end process to actually close the app. This wasn't a problem until my office started using a public drive and everybody was using the program at once. An error popped up saying that the connection string wasn't initialized, but it worked on the computer that opened the app first. Maybe the real issue isn't properly closing the form, but that is annoying that I have to use my task manager to close my app.
i am running into some difficulty with the .NET garbage collector. i have a custom control that i need to dispose and reallocate depending on user interactions. calling ctrl.dispose() and then instantiating a new control accomplishes what i want, with the nasty exception that the garbage collector (at least, i am presuming this is the GC, since this exception will happen on it's own after the application has been idle in the background for several minutes) will then periodically throw an exception: "cannot access disposed object
View 4 RepliesThis problem seams to be in other forms without any concrete solutions. I figured id post it here since i am running into the same problem and i am sure you have at well at some point (if not then you will soon...lol). The problem is this error is appearing when i open a form in designer mode.
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Buttons to resize form?
View 15 Repliesi would like to resize a form, programatically.. i know how to do it manually with a bunch of code depending on the resizing.. here's a sample:
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Alright, I need some way to generate a printable report from a text file. I'm thinking that the easiest way to do this is to create a form which will layout the information and then reading from the text file into the controls of the form. Then taking a screen shot of the form itself, and storing it into a bitmap and printing it.[code]...
View 15 RepliesI have been trying to discover how to make the contents of a form expand or retract in response to moving it�s borders by grabbing them with the mouse, or by use of the 'Maximise' or 'Restore Down' controls.
View 1 RepliesI have a program that has a TabControl on it. There is code to resize all the controls on the form when the window is resized, regardless of what tab is selected in the TabControl. My issue is that the form will only resize the controls on the selected tab. So if the window is maximized, for example, it will resize the controls on the selected tab, but if the user changes tabs, the new tab will still have the original, non-maximized sizes on it. This works the same with un-maximizing the form, the controls on other tabs will remain the size they are supposed to be when the form is maximized. Here's some example pseudo-code to give you an idea. Assume button1 is on tab1 and button2 is on tab 2.
sub form_resize()
button1.width = x
button2.width = x2
button1.height = y
button2.height = y2
end sub
So the code is supposed to resize all controls regardless of the tab. But if tab 1 is selected it will visually resize button1 but it wont resize button2. To counter this, I simply made the form resize by 1 pixel and then move back to the original size when the user changes tabs. BUT this wont work for maximizing/un-maximizing the form. I tried telling it to detect window state on tab select so if the form is maximized, it will un-maximize it, perform the resize, and re-maximize the form but this doesnt seem to work.
automate this somehow so that regardless of selected tab or window state, all controls will be resized to the proper, current form size?
I am able to resize the from using the code below but it resizes towards right side , from bottom right corner i want to modify the code so that user can re size the form from bottom left corner. also most of the solution given on this site are based on WndProc / WM_NCLBUTTONDOWN and i am not using it because my form have lots of controls so it flicker's very badly.
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find a way of resizing my form + controls. I did manage to resize the form and all controls (only standard controls in visual studio) i could get the dotNetBar material to resize?
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