I have a project where the dropdowns for the Form and controls (left side) and the events (right side) aren't available. I can re-boot, open and close the project or solution and still they do not show. They do show for other projects.how to make them come back?
View 3 RepliesI have a project in which the comboboxes above the code window, below the tabs have disappeared. If I open and close the project, they do not appear. If I open another project, they do appear. As soon as a open the project where they do not appear, they disappear.
View 5 RepliesMe.Show()
Me.WindowState = FormWindowState.Normal
nfi.Visible = False
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When one of my students opened his project yesterday, the Form he designed for it was no longer available. He could run the program but he couldn't edit the form as it had disappeared. Later he couldn't run the program at all as the error said that the form name wasn't part of the WindowsApplication. What's going on?
View 4 RepliesI am using Visual Studio 2008.
I have my project set to "Copy if New"
I created a form with variuos fields from a table.
I hit F5 to run the application and enter in test data and save.
I exit the project and then go back in and the new data is there.
I exit the visual studio 2008 completely and then go back in and the new data is there.
I did the above last night several time and the new data was always there.
This morning all of the new data I entered is gone... I have NOT changed the data base schema at all.
this is a subset of a previously posted problem, I have narrowed down my issue and am reposting a question from this thread: [URL] I have apparently confused the compiler by renaming some comboboxes in Visual Basic .net express? (See relevant code below) I think the confusion is in who should handle what, with two routines named with variations of ComboBox1 and one handling the other ( it confuses me just trying to interpret it mentally):
[Code]...
In my project, I was first using two ListViews with a few buttons on the side to control actions (add files, remove files, etc). Now, I thought it looked neater if I incorporated those buttons into a ToolStrip, and put the ListViews into a SplitContainer.So I did... One SplitContainer, on the left side a ListView (docked Full) + ToolStrip (docked Top), on the right side exactly the same.
All of a sudden, (it seems to be pretty random), the right ListView (never the left one) seems to jump 'on top of' the ToolStrip. It looks as if the Z-Order changes so that the docking screws up, but after looking at the Document Outline, it is all still fine. The ToolStrip just seems to disappear from view completely. I have no idea where it went.Then, when I select the ToolStrip in the Component bar (what is that called? where you can see the control icons only for controls such as Dialogs etc), it suddenly pops up again, in the right place! And the ListView scales down a bit so everything is correct once again...
As soon as I select another control, the Listview jumps back up and the Toolstrip disappears again...At first I thought well, not really a problem since I can just select the ToolStrip from the component bar... Nope... It seems that the ToolStrip is also hidden during
I thought it was just a one-off bug and deleted the whole SplitContainer to build it up again. Five minutes later, it happened again.I decided to throw away to complete project and go back to a slightly older version (with the Buttons instead of the ToolStrip) and try it again.Nope, same problem! I have tried to reproduce the bug in a clean project, but no luck...
I have a form with 4 comboboxes and a button. The first combobox is enabled, but the rest of the controls are disabled. When the form is opened I fill the first combobox (cbxMethod) with a datatable. When the user selects something in cbxMethod the next combobox (cbxStudy) will be filled and so on. When the last combobox (cbxAnalyte) has a selected value I want to enable the button and give it focus so the user can move forward with the program. I basically want to force the user to move from one combobox to the other, until all are filled.I am currently using the SelectionValueChange event, but this event only fires when the user changes the value with their mouse or hits the Enter key, not when the user hits the Tab key.
Public Class frmCalculatedAnalyte
Private cv_dt As New DataTable
Public Sub New()
[code]....
vb
Imports System.Net.WebClientImports System.IO Public Class Form1 Dim link As String Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As
[code].....
I have problem with a datagridview with combo boxes firing unwanted events handlers.I have a datagridview with 4 columns all data bound. All of these columns have comboboxes. Column 2,3,4 has a custom generated combobox with code with on the 'DataGridView_EditingControlShowing event' and have event handlers (Dropdown,selected Etc). (Data in the custom generated comboboxes needs to be filtered and worked on)
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I need to build a SQL statement.
I have 3 ComboBoxes that i need to use for my SELECT statement. This means that if the user selects ONE of them the SQL statement will be different than when he chooses TWO or THREE.
If none is select, then ALL data is displayed.
I have 3 Combo boxes that have number 1-9 in each, i would like to make it so that if the first one is set to 9 then the and the second it set to 8 then the first 1 is set to 1, i need them to only equal 9 through all the boxes?
View 6 RepliesI have a program issue I am trying to work on. I have multiple comboboxes(12 total) on a form.I am attempting to update some settings from what ever the user selects from the combo boxes. I am trying to keep the code as small as possible, so I thought about having all the comboboxes have similar names only different by a number being changed at the end. (ex: cbo_1, cbo_2, cbo_3, etc...)And using a For next loop to advance through each combobox and update the settings as the for next loop advances.(This might be a stupid way of doing it, but its the first idea that came to mind.)
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I need to select all the comboboxes on a form with a for each loop. I have about 19 comboboxes and I need to select each one. I tried to do
for each box as combobox in me.controls
But that gave me an error and i now tried this:
for each box as control in me.controls
if box.name.contains("ComboBox") then
...
end if
next
That selected only the comboboxes but the problem is i need to access some data that is specific to comboboxes (aka the selected item(s), if its blank) but those properties are not present since "box" is a control, not a combo box.
1) Does this code make text the selected items text? If it doesnt then how would I do that?Dim text As String text = ListBox1.SelectedItem.ToString()
2)How would I make it so that if in combobox.items there is an item with the same text as the listbox selecteditem it is removed? This is what I have and it doesnt work.
If ComboBox3.Items.Item(text) Then
ComboBox3.Items.Remove(text)
End If
I have a ComboBox with several names within it. The names are sourced from a database. Once the user has selected a name from the ComboBox, he must input the no. of hours from another ComboBox and then he is able save it to a .txt file through a streamwriter.
Here is a little image I just put together:I want the file name of the .txt file to be whatever is selected from the first combobox. So, by using the example shown above, the file would be called bob.txt. Is this possible?There shouldn't be any save file dialog or anything, I want it to be automated and the name of the .txt file to be selected from the ComboBox.
I have a combobox on my main form and it lists geographical locations that the user creates. How do I make the combo-boxes on the sub forms match the one on the main form?
View 1 RepliesIs there a simple way to make all comboboxes on a form to be readonly upon form load?
Rather than doing:
ComboBox1.ReadOnly = True
Combobox2.ReadOnly = True
And so on...
This post is a continuation of my other post concerning 'List(of) with multiple comboboxes refill problem.'. I threw the list overboard and began anew with a Dataview.
So far I (finally) managed to get 2 comboboxes (will be more, but if it works for 2...) loaded with the same data using different dataviews (DataView1 & DataView2) so I can select a value from each combobox without the other following the selection.
But now I want to filter out the selected value from the other combobox.
This also works.
The only thing is this: If I select in combobox1 the value 3, and select in combobox2 the value 4, combobox1 will change to the value 2.
If I select in combobox1 the value 2, and select in combobox2 the value 1, combobox1 will change to the value 3.
It works also the other way arround. I can't seem to get my hands around the problem..
Does somehow the index of the items in the combobox play's part? I don't use the selectedIndex, so from my point of view it can't be..
The code I use:
(with the item 0 as 'neutral' option)
Public Class Form1
Dim dTable As New DataTable
[Code].....
I'm trying to make a program in which I can import an excel file, read the whole thing and save it in another format. So far so good: can import the file, read it, skip first line or not etc.But.. Now I've been thinking about a sort option.What if the column order of the excel file is in another order than the export file must be in. In stead of opening the excel file and rearrange the columns manually, I would like to sort it in the program. Just for the sake of trying to make it work and gain experience
So, i read the first line which contains the column names and put them in several comboboxes where I can make a selection. No problem here.Now, the selection of combobox1 has to be removed from the other comboboxes and so on, to avoid double selections on one column. That's where my listOld comes in. Everytime a selection is made in a combobox, a sub is called to create the listOld and create the listNew (which contains items you can still choose from).As I make more selections the listOld gains more items and the ListNew grows shorter.But here comes the part where I'm puzzled.In the part "refill the comboboxes" (bottom part) when I disable "cmb2.Items.Clear()" the listOld (previous selected items) contains all selected items correctly.
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I'm trying to make a program that'll play the card game "War". I've started to code the dealing process, but it doesn't seem to be working. I currently have 3 comboboxes on the form each with numbers representing different cards, 1 that contains all the cards to be dealt, 1 that contains the user's cards, and 1 that contains the computer's cards. I plan to just draw random numbers from these comboboxes for the dealing. However, nothing happens when I click the tool-strip button that's supposed to deal the cards. [Code]
View 5 RepliesI want to disallow changes to two comboboxes unless the user first clicks a LOCK symbol on the screen. I pop a Y or N into the tag of the picture box when they click it...I've got this - combobox is called LanguageTo
Private Sub LanguageTo_Enter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LanguageTo.Enter
If Me.languageLock.Tag.ToString = "Y" Then
MessageBox.Show("Click LOCK symbol to allow changes to the Language Pair!", "Language is Locked!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
[code]....
How do I "cancel" the attempt to change that combobox?I don't want to ENABLE=FALSE the combobox - as I don't want it's image to visually change. I want to allow them to attempt the change and then abort it if they didn't unlock first.
When my full-screen sized Form is reduced in size by clicking on the "restore down" [i.e.] not to the minimized size but to in-between max and min, the scroll bar disappears. Is there a way to keep it automatically from disappearing [i.e.] to keep the scroll bar in view and available for use without having to make an adjustment to bring it back into view?
View 12 RepliesI create a cookie and it has the proper expiry set, but when I go to update the cookie and check it with the debugger the expiry is gone.
' Cookie Helper: Updates cookie with the selected source ids
Protected Sub UpdateCookieFor(ByVal cookieName As String, ByVal sourceIds As String)
' Update cookie if it exists
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I can't understand what I am doing wrong ... I have a form on which there is a label . This label is actually part of a control array of labels (it was created by the migration wizard trough the upgrading process) . Each time I run the program and call my form , a message appears saying :Control array element 12 doesn't existAnd this is what I don't understand .I can see it during design time , how come it disappears during run time ? I have even checked its Index property , it's 12
View 3 RepliesI have a vb.net 2005 windows form with a menu strip that keeps disappearing both in design mode and when the program runs. I noticed that on other forms there are more properties listed for the menu than this one has. Anybody familiar with this problem?
I am using a split container with docking set to full below the menu but several other programs are set that way without any problems.
I have a panel on my GUI with radio buttons. When I run the code to determine which is the checked radio button from that panel, the code runs fine, but the panel disappears from the GUI after that. Here is the code I have to determine the checked radio button:
Dim rbName = (From r As RadioButton In Panel1.Controls.OfType(Of RadioButton)() Where r.Checked Select r.Name)
System.Console.WriteLine(rbName.First)
I have tried using:
Panel1.Visible = True
and also
Panel1.Show()
Panel1.Refresh()
but it doesn't show the panel again. I tried the same thing for individual radio buttons such as RadioButton1.Visible = True and it doesn't work.
I have a bound datagridview and a dataset with tables.
I have two sets of comboboxes bound to the same field "Restaurant" in the tables (mirroring each other).
In the "NewEmployeeRestaurant" combobox I change the value and it reflects in the datagridview. I can shoot around clicking all over the datagridview on other employees, but when I return to the employee I changed, the value remains what I changed it to. All is good in the world.
However, when I go to the "EmployeeRestaurant" combobox with the same settings, I change the value and it is reflected in the datagridview. So far so good. But when I go to another employee then click back on that employee I changed, the datagridview still shows the new value but the combobox is empty! NOT COOL!
Ok, getting a little frustrated. I'm a new VB programmer (just a few months). Let me show you the start of my code so you can see what I'm trying to do:
Public Class Form1
Dim crude1 As Double = 0
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code]....
I am using VS2008 on Windows XP SP3. I have a form with two pairs of dependant comboboxes which are bound to a SQL database table. In each pair, the second combobox's choices are dependant upon the selection of the first combobox.
Both pairs of comboboxes behave as expected. However, when I use the binding navigator to look through other existing records, the text in the second pair of comboboxes disappears on records that already have selections.
The database table still holds the information, but it just doesn't display in the combobox. Again, this only happens on the second pair of comboboxes, not the first pair and both sets of comboboxes are set up exactly the same (albeit on different tables).