how to code a form that has 2 text and a tick box. When the user selects the options he needs it keeps the options they selected when the form loads next time round once the user has closed it. My first thought was hold the options in a text file but glad to hear any further ideas on that.
View 1 RepliesI want to want to enable/disable Timer1.Tick when Form1 loads, and i want to to depend to the checkstate of a CheckBox in another form. This is the code I'm using:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Customize.CheckBox4.CheckState = CheckState.Checked Then
[Code].....
Can you please help me with the checkboxes in the listview. I want to save the settings of the checkbox when I tick and untick them in the listview, e.g tick and untick the checkboxes and save the subitems text in the label text.So I can read the settings from the label and split it to read each text.Do you know how i can save the checkbox settings before I can read the subitems text when I click on the button?
View 19 RepliesI was trying to code a save option for my project, it's a spammer that I have created and I have made it to where people can have their own personal spam message and when they want to use it all they have to do is click a radio button and the text will appear in the text box. Now like I said I want it to save, like they make their own customizable spamming options and then save it so they want have to continue typing in the message because that would defeat the purpose of my project.
Here is the code:
TextBox2.Text = (TextBox2.Text)
RadioButton1.Text = (TextBox2.Text)
TextBox3.Text = (TextBox3.Text)
RadioButton2.Text = (TextBox3.Text)
TextBox4.Text = (TextBox4.Text)
[Code] .....
Though it wouldn't work unless I imputed this code
Private Sub SaveSetting(ByVal p1 As String)
Throw New NotImplementedException
But when I start the program it quits and says the " NotImplementedException" is unhandled:/
I am trying to use vb to open windows 7 visual effects in control panel and only select certain options then saving it. Either buy making vb do all the work or making vb find the registry keys.
View 9 RepliesI have a datagridview binded with a bindingsource with all the options of editing,saving,deleting enabled.But i am unable to understand the problem that is why the data from my datagridview is not getting saved.This is the code which I am using
Private Sub frmDvdMovieData_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'Library.category' table. You can move, or remove it, as needed.
Me.CategoryTableAdapter.Fill(Me.Library.category)
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i have my main child form open. then i show the new form:
[Code]...
but when the form opens it flickers a lot. so i want move the new form behind the main form while it loads so the user does not see the flicker. once it is done loading i will set the form to topmost. how do i move the new form behind the main form?
I have a background application that has a System.Timers.Timer running in it.When the elapsed event is raised I want to show a form.Now if I call form.showDialog everything is hunky dory. If I call form.show the form is not responding ... Now I suspect that this is happenening because the elapsed event is raised on a secondary thread but that said I dont know how to fix this.
View 10 RepliesI have an app that basically monitors states, then when a state has changed, a notify form is triggered to show for the user.Timers are used on the form to showing a fading in/out of the form (somewhat like MS Outlook new email notification windows).I'm using a delegate from the main form to show the form, but when the first timer in the form is set to start, the timer's tick event is never ran. Everything up to that point in code works perfectly though.Is there something I need to do in order for the tick event to fire, like it would without the use of a delegate to show the form?[code]
View 2 RepliesWithin the program, there is a button that opens a file inside of a second form ( DocViewFrm ) and it works fine the first time around. Within this new window, there is a button that uses Me.Close() to close the window and return to the main window. Upon the attempt to open this second form a second time, the program crashes on the Me.DocViewFrm.Show() line. The error message reads:
An unhandled exception of type 'System.ObjectDisposedException' occurred in System.Windows.Forms.dll
Additional information: Cannot access a disposed object.
[code].....
I have this code to add ToolStripMenuItems when my form loads.
Dim i As Integer = 0
Dim stanicastring As String
While i < ListBox1.Items.Count
[Code]....
Ive created an application that reads plugins but I can't figure out a way of making a form thats housed in the plugin into an MDI for my existing application.[code]...
View 3 RepliesI want to be able to make labels on the form change with user-entered variables (that they would do before this form appears) and so when this form appears, I want the variables to already be displayed in the labels without them having to press a button, or click on something.
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I am in need of a form that shows various options, exactly like the Options in Visual Studio. Since there are so many options I too want them categorized, with a TreeView to the left taking care of showing the right category.The usual 'easy' approach here would be to just place a TreeView control on the form, add some nodes, and give those nodes a tag or key that corresponds to a panel or UserControl with the options for that category.Since there will be a lot of options however, this is not really feasible design-wise; the form would be cluttered with possibly 50 panels, all of which I would need to select and bring to front from time to time to add controls to them that represent the options.
So I decided to create a custom control that does exactly that. The control is very similar to my Wizard usercontrol, users can add OptionsPanels at design time, which inherit Panel and simply represent one panel of options. When they do, the panel is added to a container panel, and at the same time a TreeNode is added to a TreeView. The control uses a custom ControlDesigner to handle design-time clicks in the Treeview, selecting a different node would select and bring to front the corresponding panel, allowing the user to add the controls he wants.
Due to the design time support the problem of having 50 panels is no longer present, only one panel will be visible at a time and selecting the right panel is as simple as selecting the corresponding TreeNode, just as during run-time. Anyway, I got all this working, but only for a single 'level' of categories. As you can see in the Visual Studio options, there can be multiple levels of categories. For example, the Environment node has a bunch of children, where each child represents one 'options panel'. There can even be deeper nesting, see the Text Editor node for example.Let me begin by drawing out the basics of how my control works so far.
The main control is an OptionsView control, which contains a SplitContainer with a TreeView to the left and a OptionsPanelContainer to the right. The OptionsPanelContainer is merely a Panel to which only OptionsPanel controls can be added, and which raises events when this happens, as well as when OptionsPanels are removed from it. An OptionsPanel also inherits Panel, and these are the actual panels the users will see in the control, one for each option category.For now, each OptionsPanel has exactly one corresponding TreeNode (and vice versa). In the Visual Studio options, each 'parent' category usually has a 'General' node as the first child, and the parent and this General node show the same option panel, but I am ignoring that for the moment.
The OptionsView control has a property Panels that returns the ControlCollection (Controls property) of the OptionsPanelContainer (in other words: it returns a collection of OptionsPanels that are in this container panel).
vb.net
<Editor(GetType(Designers.OptionsPanelCollectionEditor), GetType(UITypeEditor))> _ <DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _ Public ReadOnly Property Panels As Control.ControlCollection Get Return Me.PanelContainer.Controls End Get End Property
A custom CollectionEditor for this property takes care of the designer: even though the property type is ControlCollection, the CollectionEditor knows it should create instances of the OptionsPanel control instead of just Controls.When it does this, a corresponding TreeNode is also created and its Tag property is set to the OptionsPanel. Vice versa, the Node property of the OptionsPanel is set to the node. Hence the node and panel both know their corresponding object.
vb.net
Public Class OptionsPanelCollectionEditor Inherits System.ComponentModel.Design.CollectionEditor Public Sub New(type As Type) MyBase.New(type) End Sub Protected Overrides Function CreateCollectionItemType() As System.Type
[code]....
So far so good, this all works fine. I can add Panels via the designer and when I do a new TreeNode appears in the TreeView. I can select this node and the panel becomes visible (comes to the front).Now, I am a little stuck. How do I implement child option panels? And more importantly: how do I let the user add child panels?The most logical choice I think is to let each OptionsPanel have a property (ChildPanels or something) that returns the child OptionsPanels for that panel. Once the user selects an OptionsPanel then, he can look in the property grid to find its ChildPanels property and add child panels to that.
There is a problem though: what would this property return? It must return a ControlCollection of some container (this is, I think, a requirement for the designer features to work, otherwise panels are not added to the Form.Designer.vb file). But there is no container. I cannot add them to the OptionsPanel itself, that would make no sense because the parent OptionsPanel has its own set of controls (the options itself...), there cannot be another (fully docked) Panel on top of those obviously.The container of the main OptionsView then? That is not an option either, its Controls collection holds ALL OptionsPanels, not just the children of the selected panel. I cannot 'select' only the right panels either, that would require me to return a new instance of ControlCollection, it would be impossible to return the actual ControlsCollection that holds merely a small selection of its controls.
[code] how do i apply that to all 30 textboxes when the form loads.
View 3 Repliesi have a datagridview and a textbox when the form loads i want to enter text in the textbox then in column 1 in the grid whenever it is focused i want the text from the textbox1 to appear no matter how many records i enter until the user changes the text for the next lot of records,
View 3 RepliesI have a table Called inventory, one of the columns is a checkbox based column called saved where it stores the checked state as the value 1 on the database. On a related form when i load it i want the datagridview to filter to only show the rows where saved has the value of 1.
View 5 RepliesHow do i go about creating an exception handler when i want to login to my form to access the rest of my forms. The username and password are linked to server.What if it doesnt connect to server? here is coding for me to login:
Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
If (txtUName.Text = "-") Or (txtUName.Text = "0") Or (txtUName.Text = "") Or
[Code]....
I wrote this application in VB2008 and it ran for three years without problems(It had one first chance error during that time but ran correctly). I started having problems at the first of this year with a textbox not showing the update for the date code correctly. So I thought that maybe some update to the system had changed and I might need to do some code changes to take into account for these updates.I first tried to convert it to 2010 but the conversion would not operate correctly even though the code showed to be correct.It would jump from one form to another in the middle of a if statement using debug to step through the code. the if statement would just test for a variable to be less than 2 and then be changing the text in a textbox. So I decided that It would take longer to correct the converted application then to just use VB2008.
So I went back to VB2008 and my XP to find out why the date code had quit working. This code had been working correctly for three years.I was thinking some of the code used had become outdated in some way, because a copy of the original source would not run in debug mode correctly. It showed the same problem of not updating the textbox. I stepped through debug and found that it was doing the same thing as the VB2010 version and jumping in the middle of the if statment. So I rewrote the code and used the format string command to build the date code in stead of the seerating out the date into 3 variables using a split statment.This works for the textbox problem and stoped the jumping to a different form. But since I have went back to the original code I have the first chance errors comming up.
I have several first chance exceptions being thrown from debug. This happens when I fisrt start the debug and I have put break points all through the applicatins to try and find the problem I have also enabled debug exceptions Common runtime thrown and it still gives the exceptions but no break point.I have option Strict on. There is no errors or warnings showing after a build. I have cleaned the solution and exausted all my methods of troubleshoooting this problem.The following is what I am recieving while in debug mode in the immediate window.
A first chance exception of type 'System.IndexOutOfRangeException' occurred in LABEL MAKER 2 Forms.exe
A first chance exception of type 'System.IndexOutOfRangeException' occurred in LABEL MAKER 2 Forms.exe
A first chance exception of type 'System.IndexOutOfRangeException' occurred in LABEL MAKER 2 Forms.exe
A first chance exception of type 'System.IndexOutOfRangeException' occurred in LABEL MAKER 2 Forms.exe
A first chance exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll
A first chance exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll
Now if I run this as a published application I get the same error as the first one on the above list and it gives a error window with continue, exit,and details, if continue is pressed it will allow me to continue and the application runs correctly.The details just say basicly the same as the error with no error number and that the error was in my application.exe. Nethier of these errors will give a break point so that I can find the problem. The problem does not appear to be in my code because this happens before the first form appears.
I have a vb.net project in vs2008. When the project loads, one form is always immediately marked as changed before anything has been done to it. This didn't happen in earlier versions of the form. Nor does it happen with any other forms, classes, modules, etc. I have no idea why it is occurring but I am curious.
View 4 Repliesis what I have so far. I have a form that needs to load a file externally and populate the combobox. I can get that part if I use a button, but I don't want to use a button. I want it to populate when the form loads for the first time. The below code does not accomplish this, it doesn't even try to load it. I put break points in this code but it never breaks
Private Sub mortCalMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'sets listview values
[code]......
I am using following code to raise UAC window. It works fine but my form that contains button to raise this window is shown twice. I mean if I put it in CopyFiile Button, when I click this button, it raises UAC windows, copies file, gives success message and then opens another instance of the same form that contains copyfile button.
Dim proc As New ProcessStartInfo
proc.UseShellExecute = True
proc.WorkingDirectory = Environment.CurrentDirectory
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Public Sub ReadSample()
Me.Focus()
Do
Application.DoEvents()
[code]....
When i put:
Private Sub ThinkSec_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ReadSample()
End Sub
The application wont start.But when I put the sub to run when clicking button, it works.Why?I've tried all do until, while, for etc variations to get it correct but i have no success.
Invoice Number = Now.Year & Now.Month & ?????
how can i add 5 digits that auto increment when the form loads?
Expected OUTPUT
20120100001
20120100002
[Code]....
I have a problem.I want to set the focus on TextBox1 when the form loads. TextBox1 has a tab index > 1. I put this line in the form load subroutine:TextBox1.Focus()It does not work! However if I make a button and put the above line of code to its click event procedure, then TextBox1 get the focus.
View 9 RepliesI was wondering if there was a way to trim the working set when the main form loads in vb. I know in C# you can use
SetProcessWorkingSetSize(GetCurrentProcess, -1, -1) API call
But I am not quite sure how to implement this in vb. Basically I got an application that is showing 11,000K+ mem usage in the task manager when in actuality it is really only utilizing about 1,000K if that and I want to try and trim the working set to show the actual usage in the task manager rather than what the framework is reserving.
i want to be able to load form2 by pressing the right mouse button.
here's what i have so far:
Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
If vbKeyRButton = True Then
[Code].....
e.KeyCode is giving me an error.
Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
If vbKeyRButton = True Then
[code].....
On a form load I want the time now + 10 minuets to show in My TimeMaskedTextBox.IE, If the time now is 18:30 I want the TimeMaskedTextBox to show 18:40 the code below does not work can you please help?
TimeMaskedTextBox.Text = DateTime.Now.ToString("HH:mm" + "00:10")
if i want to make a change to a cell in a datagridview when the form loads, how would i go about doing this?
View 19 Replies