Forms :: Setting Form TOP MOST To "true" Error
Apr 8, 2009
I have written a program that if all if statements are true then it closes out with me.close() without displaying the form. If a if statement is false, then the form shows with some text as to why it failed.The program works perfectly....until I change the form setting "top most" to true, if the if statements are true, instead of the form closing as it should, I receive ObjectDisposedException was unhandled Cannot access a disposed object. Object name: 'Form1'.
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Oct 27, 2009
I've asked this question before, and so have many before me, i have done extensive research on the topic and stil no help. Maybe this is some kind of secret info. shared only amongst top programmers. Bt how do you really, trully double buffer a form, aside from setting "Double Bufferd" to true, which doesn't work in most cases, I want to know how do companies lyk Microsoft and Symantec, prevent flashes on big applications such Word and Norton.
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Oct 16, 2010
I have an app that on older monitors the form exceeds the screen size. I have the autoscroll set to True. However, the left part of my form is not visible...only the right side is completely visible ... via the scroll.
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Jul 4, 2011
My form has four panels, each contains radio buttons. At design time, all buttons have checked = false, which is what I want when form loads.When the form loads a radio button in one panel has checked = true
For the other three panels, all radio buttons have checked = false.I have tested this with no code in the Form_load subrroutine.How is checked = true being set for that that one radio button ?
Does The IDE somehow force at least one radio button on the form to have checked = true?
Can I force checked = false for all radio buttons when the form loads? If so, how?
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Oct 5, 2009
I did this once before but I can't find the code where I did it. I have 4 checkboxes and I want to assign them each a value like:
[Code]....
I've searched the net and even scanned 3 different computers that may contain that source code and have not had any luck finding it.
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May 5, 2010
I'm doing an application for a school to help them keep track of student attendance and because I'm rather new to VB 2008 .NET I'm sure I'm missing something simple.see the screen shot and attached sample application showing the problem I am having.
The screen shot shows 3 open forms. I'm not able to get the value from the 3rd open form into the Student ID textbox of the 2nd form even though my messagebox shows a value is really in there.The attached application has 3 forms similar to the production application I'm writing which also includes 3 forms. Could you look at the application and tell me what we are missing to get the textbox data in the 2nd form to show up?
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Jun 15, 2010
I want to have a text file perhaps a ini file where I want to set a value to either True or False so a boolean. How can I do something like this. I want it to be a in text file so I can change. If it's in settings I'll need to change each users settings I want each user's application to read this text file.
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Mar 25, 2011
I am currently adding keyboard shortcuts to our web application, so from JavaScript.So far, it has consisted mostly in triggering the click events of buttons already exposed in the user-interface.Now, I would like to add another one which redirects to another page.The new page URL needs to be generated based on elements from the source page query string.Basically, I have a date in the query string and I want to generate a new URL for the next day.
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Nov 23, 2009
System.InvalidOperationException was unhandled.
An Error occurred creating the Form. The error is: The Parameter is incorrect
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Oct 2, 2010
i am using VS 2008 and just started to work with XAML and WPF. while opening in page(.xaml) in design mode i'm getting the error like this "Only TrueType fonts are supported and this is not a TrueType font".
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Nov 26, 2010
I'm upgrading a project from VB6 to VB2008.I have a routine that clears a combo box, named 'cmbDataTable' which could be on any form. I pass the form and the combo box is cleared.
[code]...
I assumed it would be the same in VB2008 but I get the error.'cmbDataTable' is not a menber of 'System.Windows.Forms.Form'I am working my way through the project, first updating the global procedures - this is one - I haven't written the calls so cmbDataTable doesn't yet exist.
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Apr 8, 2010
I'm reading in a RTF file that I want to search by either using WholeWord or MatchCase search options.
atm I have this:
If (chkWhole.Checked = False) And (chkMatch.Checked = False) Then
'ERROR - MUST SELECT A SEARCH OPTION
[code].....
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Aug 18, 2010
I am trying to up a private sub routing based on the Text Changed Event for a listbox, inside of the event, I want to set a boolean variable to true. I have it set up, but for some reason it is not getting called.
Basically what I am doing is the user is being prompted to enter data in an input box. I am taking the data that is entered on the input box and populating it in a list box. I want to know if the text in the listbox has been changed, hence changing the blnIsChanged = True
Can I use text changed with a listbox???
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Oct 23, 2010
I use a lot of picture box, label, and custom controls, all of which are oddly-shaped, and must overlap. In almost all cases, the backgrounds are not solid colored.I am using transparent .png images for the background images of many of these controls (except labels), and using transparent as the backcolor, creating a custom shaped control. However, when these controls overlap, the one towards the front will not show any controls behind it through the "transparent" background. This is getting annoying, because I cannot use any alternate object arrangements.How do I create true custom-shaped forms?
P.S. Some of my controls have extremely irregular shapes, so using simple line and curve drawing functions is probably not an option.
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Jun 4, 2010
I am trying to build an error handler for my desktop application. The code Is in the class ZipCM.ErrorManager listed below.What I am finding is that the outputted file is not giving me the correct info for the StackTrace.Here is how I am trying to use it:
Try
'... Some stuff here!
Catch ex As Exception
Dim objErr As New ZipCM.ErrorManager
[code]....
What is happenning is the .GetFileLineNumber() is getting the line number from 'objErr.Stack = New System.Diagnostics.StackTrace(True)' inside my Try..Catch block. In fact, it's the exact line number that is on. how I can catch the real line number the error is occuring on?
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Nov 17, 2009
I'm trying to make an MDI parent form to call other forms. I have put this code which I found in a post here into the main form which I added to my project as an MDI parent form:
[Code]...
I get an error message which say FrmEmbed is not defined. How can I correct this?
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Apr 26, 2011
I try to use a special font in my programm xxxxxx.ttf (true type font)and i got this error "only tryetype fonts are supported .this is not a true type font "i used it before with same programm but since i installed a very old version of xp i got the error.
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Jun 1, 2009
I am using the following
Dim cmC As New MySqlCommand()
Dim daC As New MySqlDataAdapter()
Private Sub btnClientSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClientSave.Click
[code].....
When I add 1 client it works fine, but when I try adding another I get the following error:
When MySqlCommandBuilder.ReturnGeneratedIdentifiers is true, MySqlCommand.UpdatedRowSource must be set to None.
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Apr 7, 2011
What I have is a user control that has two RichTextBoxes. In the user control, there is RichTextBox1's TextChanged event, I want it to set RichTextBox2's Text to the same as RichTextBox1's Text, I'm currently using: RichTextBox2.Text = RichTextBox1.Text. The user control is on the main form, when I run the application and type I get this error: StackOverflowExecption was unhandled. [Code]
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Aug 19, 2009
I don't see why this code is not running. I want the form to be hided if the statement is true, but what it does is only open the other form but not hide this one.
Dim fileExists As Boolean
fileExists = My.Computer.FileSystem.FileExists("C: est est.tx")
If fileExists = True Then[code].....
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Mar 12, 2009
6/0
6/1E-10
6/2E-10
[Code].....
I need those in there true form not scientific notation, how do i do this in vb.net?
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Aug 21, 2010
I brought up a new project in Visual Studio 2010 and found that there are no gridlines on the form. I went to Tools, Options, Windows Form Designer, General and found the Show Gridlines option set to True. I tried turning it to false and back to true with no change.
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Apr 4, 2012
Just opened the VS2010 pack I've been meaning to get round to for ages. Where is the setting to use un-docked forms in the de?I know I can un-dock each for manually but thats pants.
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Aug 18, 2009
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'
Quote:
CODE:
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Feb 9, 2009
Did vs2008 or vb.net got some of the solution to solve properties setting of the components are same with each other?
Example: like I want to standard the datagridviews' property, each of the datagridviews' property is same with each other. but each time I create the new datagridview. I have to manually set the datagridview 1 by 1.
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Nov 18, 2009
I've set the Icon for my forms and project, and saved. But my project's icon is still the default app icon.
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Mar 3, 2012
i am working on a college project in visual basic 2010. in my program, i noticed at the last minute that i needed to add a "main" window. in this main window, i want to have all my other forms opened by buttons (i know how to do that part of it).
the problem i keep having is the window with the options to save the information pops up, not the main window. is there a way to easily fix this? maybe a snippet of code, because the only way i can think of is to scrap the project, start over from scratch adding my main window first, then the others.
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Jul 22, 2010
I am trying to build a form that will present one question at a time with true false buttons. It will tell the user how many questions they got right at the end of the quiz. how to i present one question at a time ?? since one button handles only one event.
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Mar 2, 2010
Do you know why this happens? If (strCampaignFolder <> "") Then 'Next line works fine when strCampaignFolder already has a value set by FolderBrowserDialog1.SelectedPath further below.
FolderBrowserDialog1.SelectedPath = strCampaignFolder Else 'PROBLEM: Next line causes the external .NET code 'UnsafeNativeMethods' to put the app to sleep when strCampaignFolder has no existing value!
[Code]...
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Dec 4, 2011
I have a list box on my form with 2 value - "2010" & "2011". When I change the value in the listbox it should set the minimum and maximum value of 2 datetimepickers. Each time I try to change the value I get an error - for example if I change the listbox from 2011 to 2010 I get the error:
"Value of '31/03/2011 00:00:00' is not valid for 'MaxDate'. 'MaxDate' must be greater than or equal to MinDate. Parameter name: MaxDate"
If ListBox1.SelectedIndex = "0" Then
DateTimePicker1.MaxDate = #3/31/2011#
DateTimePicker1.MinDate = #4/1/2010#
DateTimePicker2.MaxDate = #3/31/2011#
DateTimePicker2.MinDate = #4/1/2010#
End If
If ListBox1.SelectedIndex = "1" Then
DateTimePicker1.MaxDate = #3/31/2012#
DateTimePicker1.MinDate = #4/1/2011#
DateTimePicker2.MaxDate = #3/31/2012#
DateTimePicker2.MinDate = #4/1/2011#
End If
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