Add Controls To A Form Fails Because They Disappear
Jun 10, 2010
I have an add-in that creates a form, adds controls to it, then tries to add some more. But on the second attempt to add controls, they disappear. If I have an error in my code that gets displayed in a message box I can see the new controls behind it. When I click OK they disappear. If I have no error and step through the code, they are there according to properties, although I can't see them because the form will not display while in debug mode. When the program finishes, th controls that were created are gone. Perhaps I am selecting the form to edit wrong.Too bad there isn't any documentation (or any than can be found) that describes how to do this.[code]...
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Aug 22, 2010
I experience very strange behaviour of a windows form written in VB.NET 2005.
The form contais DataGridView with data.
I minimize the form to Windows task bar, then I restore it. The form appears, but the DataGridView and other controls are not displayed. In order recover from this situation, I need to resize the form or maximize it.
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Sep 27, 2007
Every once in awhile when I double click on a form in design mode (Windows Forms Application) that contains a tab control, all of the controls on the tab control disappear. I have to reopen the form to get them all back. In addition to this, the column order of my columns on any datagrid inside a tab control get rearranged when this happens. Is this a known bug and if so is there a hot fix or patch?
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Mar 23, 2011
How is it made, controls created in a running application appear again when I reopen it? The images loaded into picturex must be saved in a database?
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Nov 19, 2011
I have made a drawing program. It draws a line when you click in the form, but if the form is minimized or another window is on top of it, the lines disappear partially.
Here is the
Dim FormMiddleX As Integer
Dim FormMiddleY As Integer
[Code]....
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Mar 20, 2011
i have this custom i want to use as message form.. it should just display and disappear after 1 second.i add timer and enable it with interval of 1000, timer started on form load.... there and stuck. form displays but wont disappear.. how do i make is disappear.
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Nov 22, 2009
I have a webbrowser I'm making, and my listbox items for form2 disappear once I close form2 and reopen form 2. However, once I restart the program (Close everything) and re-enter, the data is saved. But once I reopen the selected form, the listbox items are lost. Here is my code (It's long)
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Aug 16, 2011
I have a MainForm which contain SecondaryForm as a control of the MainForm.SecondaryForm contains DataGridView which loads data from sql server and I add a collumn named SUM that SUMs all the values of the same row. This is provided within the LOAD event of the SecondaryForm.When SecondaryForm.Load events finishes, the program goes back to MainForm right after the line "SecondaryForm.Show" and here the values of the column SUM disappear.When i write those values runtime, they never disappear.
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Feb 7, 2010
I have a simple login field, which works fine with the exception of one quirk. The form is set up with the tab order to go to the UserID first and the Password text box second. This works fine when the form is used the first time, but when the form is used the second time the focus in placed in the Password field. If the form is used a third time, focus is moved the OK button, that is each time moves to the next tab order. I even tried to set the focus in the Load event as in Me.txtUserID.Focus(), but this doesn't change the behavior. Again, I should note that I close the form and not hide the form.
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Aug 12, 2009
My application's binary serialization was working well up to today (this is not a released app yet - still in development). I have a "Project" class that is the top-level class of a hierarchy of other classes related to its function. And before you think it, yes, all of those classes are marked as serializable. Infact, they all were being serialized before today.
I have one event on the Project class that assists in informing when the project's save status has changed (i.e. new, modified, saved). This event was added today along with some events on the other classes that filter up to the Project class (the project needs to be told when its objects have been modified). I unfortunately added all of this at the same time so I can't provide any incremental details as to when it stopped working, but when I try to save the project through my binary formatter it tells me that my main form is not marked as serializable. Well, yeah... of course it isn't! it shouldn't need to be because there is no member of my classes that even mentions the form. But for some reason handling the Project's event on the form triggers this error.
Serializing the form is not a solution. Neither is not being able to handle my Project events. If I comment out the handler it works fine -- and I don't even have to remove the WithEvents keyword on my form's Project variable. Now that I write that I'm speculating that it may have to do with the event being raised as a result of the serialization (occurs when the save button is clicked).
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May 24, 2009
How can I add controls to a form in code and set the properties of the controls using the With statement?Also I would like to know how to add a container control and then add a control to that container.
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Apr 15, 2010
I have a slight problem With an enumaration of child controls on a form. The following code will not get but about have the controls that are on the form. The controls show that the count is correct but when it goes through the loop it skips over some of the controls. If you run it through the enumeration two or three times it will get all the controls a few at a time. The solution uses two forms, one that has the controls and the other that labels are made and displayed on. The Tx is just a index to add a number to the label.name and rename the label. So each label is identified seperately. This works for all the the controls that are seen in the for each loop.
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May 11, 2009
I created a class that can take either usercontrol.controls or form.controls as a parameter,how can i pass either to that class? as a property or how?
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May 26, 2012
I have a module level sub that I use to clear text fields etc on my forms:
CODE:
The problem I have is in the last few lines of code as I'm not really sure how to access the text boxes contained within the tab controls (of which there are many tabs and many text boxes).
This is the closest I've got but I am getting an "option strict on disallows late binding" error on the tabCtl in the following line.
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Jan 16, 2012
I have a form. And some controls(such as TextBox,ComboBox,etc.) on the form.Now,I want to store the controls' Text into a .txt file(or any other formarts).Then I want to read the text in the .txt file to my controls.
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Sep 27, 2010
Inside a form, I would like to display a pdf file which is already available in my resources (template file "untitled"). In this pdf file, I have some fields which get their values from some texboxes in another form. My aim is, when the user triggers the button to call this form, it should insert the values inside the pdf file and display the output pdf inside the form.I have written the code to an extend but could not finish it myself after my many trials... Now here are the two things I cannot manage:I can use a directory to read the template pdf "untitled1.pdf". But my aim is to use the file inside my resources. can save the output file in a directory but this is not I want to do. I want to display the output pdf.
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Nov 21, 2009
How 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.
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Jun 6, 2010
I am using visual basic and when I try to hide Navigation bar, I am not able to, it is disabled. Ok I tried to turned it off going to "all languages", althought I unchecked the setting. It didn't disappear. I restarted visual studio, closed all open classes. It is just visual basic, when I try with c# I can hide and show it.
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Feb 14, 2011
I am storing labels in a collection array called mylabels.now I want to not only remove a label from the array but also from the picturebox it is drawn on.I am trying the following
mylabels.RemoveAt(x)
but although the labels are removed from the array, even on picturebox refresh they donot disappear from picturebox.
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Aug 30, 2011
I have seen this problem before but I haven't seen an answer to the question that applied to my particular case. I have a BackgroundWorker running in my VB form, as well as a progress bar and some labels. I also (if it's important) have a WebBrowser on my form, but it isn't affected by the thread.
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Apr 15, 2010
I took picture box and some container controls on my MDI form but when I am opening my child forms it going to backside of my MDI forms controls.
How can I resolve this issue because I cannot remove my controls from my MDI form but at the same time I want to use my child form worked properly.
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Nov 30, 2010
I have a visual basic 2010 form with various group boxes, buttons, and labels. i want to be able to have the form maximized but when i do that the controls stay where they are at and they do not resize with the form. i want them to resize proportionately with the form.
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Jun 4, 2009
When I open "My Project" in VB WPF Project, then make changes and save, then character "*" doesn't disappear from tab.
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Sep 3, 2009
I use VB 2008 Professional. Initially, when I'm in debug mode all the windows are visible: The Solution explorer, Server explorer, Auto window, the tool box, etc. Suddenly, whenever I'm in debug mode only the code editor is visible. I have tried opening them from the View and Window Menu but they don't show up until I exit the debug mode.
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Mar 27, 2010
I have 4 different panels, which I want to appear in the SAME spot on the form at different times. Currently, I've just got all four stacked on top of each other in the designer, and I'm toggling their visible properties to show each. This is becoming extremely difficult though, as now I have different buttons in each panel, and the panels keep getting accidentally put inside each other when I move them.
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Apr 6, 2012
I am making a calendar, if I click on a day I want to make a screen disappear a bit like this:
________________________________
|12:00 |
| Mister One, Footmassage |
[Code].....
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Jan 25, 2010
I have splash screen with three buttons.When i run My application after sometime splash screen disappear. Actually what i wanna do when user click button then splash screen will close otherwise not.I don't wanna use timer.
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May 11, 2012
I have an asp.net page with a button that adds an additional row to a gridview for input to the database. The gridview consists of 3 textboxes(template fields), when I add a row the information already entered somehow disappears on the postback. I want the button to add additional rows without disspelling the data in the other rows, until I hit the submit button. Here's my code
Private Sub AddNewRowToGrid()
Dim rowIndex As Integer = 0
If ViewState("CurrentTable") IsNot Nothing Then
[Code].....
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Feb 16, 2010
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
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Aug 11, 2010
I have an application that uses the editable dropdown combobox (comboboxstyle.dropdown)
But when I run the application, whenever I entered a new value that is not in the list, it disapears when i focus to other cells.
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