how can i selectively disable propertygrid items, or even categories based on the value of another property? i read somewhere about a typedescriptor but i couldn't find a good example.
View 6 Repliesi have this function to enable disable the controls on a form....
Private Sub EnableDisableAll(ByVal xType As Boolean)
Dim ctl As Control
For Each ctl In Me.Controls
If TypeOf ctl Is TextBox Then
ctl.Enabled = xType
[Code]...
everything fine ...but when the controls r disabled it shows in the dull color. can i change the color ? as u can see i have given the command to change the forcolor to red to textbox but it still shows in dull greay... i dont want it to be enabled as i am using this to just give a view of records....the back color is changing to white but not the forecolor.....is there any thing more to be done...or any better way so as the items remain enabled but i dont allow the changes to be done.
MessageBox.Show("Disabled")
Button1.Enabled = False
Button2.Enabled = True
[code].....
I'm trying to make a program where when textbox1 doesn't have a value, textbox2 is disabled but when a value is entered to textbox1, textbox2 will be enabled.
View 13 RepliesI am creating a USB "cookie dispenser" (long story) and I plan on programming it by, when cookie.exe starts, it disables the port, you plug the USB in and press a button and it enables the port (thus powering the device). What I need to know is, is this at all possible? And if so, can you help me get it to work? I know I should put in an effort but it's late for me (UK) and I want to post this overnight so that you guys (in the USA may
View 8 RepliesI am enrolled in a class in Visual Basic 2008. I wanted to drop the class, but it is too late. Now, I am stuck with this project that the professor assigned and it's due this Thursday. Anyway, how do I do this: The credit card number TextBox control is dynamically enabled/disabled depending on the choice of payment type? And did I do the newOrderButton correctly (see code below)? This is also the clear button. And is there a way to do a reset Form? Sorry for that many questions. I am really lost right now because there is a lot to do in this project and I don't even have a clue of how I am going to finish this project.
Private Sub newOrderButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles newOrderButton.Click
' clears all the information that is displayed and start over
[code]......
I have a program and I need the Submit time button to be disabled after I enter 5 numbers and then the Get Payment button needs to be enabled. I have been playing around for several hours but cannot figure out how to do it.[code]
View 4 Replieswhen I got home to try out the method in the above post in my real application things did not work out.The big difference is that my main form is a MDI. When I open my edit form, it's mdiparent is set to the main form. When I click 'edit' and then disable "me" the entire application goes modal.I was expecting only the MDI child to go disabled, not the whole application..Basically, I want only the MDI child window that opens it's "edit" dialog to go disabled..
View 1 RepliesHere lies my form: Attachment 72542 I have to perform save and show operations with the access database. If i select the Bank Account radiobutton(Radiobutton1) then Bank Account No. combobox is enabled,Credit Card No. combobox is disabled and user can input the value only in the Bank Account No. field. When the form loads then both the combobox1 and combobox2 are disabled and as the user selects the radiobutton the combobox are enabled accordingly. So i did the following code in the form load event:
[Code]...
I'm trying to enable/disable controls inside a repeater:
<asp:Repeater ID="Repeater1" OnItemCommand="RepeaterItemCommand" runat="server">
<HeaderTemplate>
<table>
<th>
[code]....
I'm working on a winform which contains several controls like textboxes, radio buttons, datagridviews... All of these controls have been added to a main group box called gbDataEntry. My problem is when the user is seeing the form, I set gbDataEntry.Enabled = False but I want to enable some controls like DataGridviews so the user can scroll them. After disabling gbDataGridview I set DataGridView1.Enabled = True but it seems that the datagridview does not respond to this line. Why?
View 1 RepliesI am developing an application with a DataGridView (dgvData) that requires a ToolStipMenuItem (tsmiSelectNetwork) of a ContextMenuStrip (cmsNetwork) to be enabled and disabled programmatically based on if the column is sorted or not.
I have set:
'tsmiSelectNetwork.Enabled = False' at runtime
'tsmiSelectNetwork.Text = Select All' at runtime
'dgvData.Columns(5).ContextMenuStrip = cmsNetwork' programmatically
When dgvData is sorted by column 5, tsmiSelectNetwork.Enabled should be set to True; when it is sorted by any other column, it should be set to False (see code below)
Private Sub dgvData_Sorted(ByVal sender As Object, ByVal e As System.EventArgs) Handles dgvData.Sorted
If Not dgvData.SortedColumn Is Nothing Then
[Code]....
The debug output indicates it is functioning properly, but what you seen on the screen is not.
I am using Visual Studios 2008, version 9.0.30729.1 SP; and .NET Framework 3.5 SP1; ContextMenuStrip version 2.0.0.0
I have successfully ported a VB6 application to VB.NET (VS2008, .NET 2.0). Much optimization and rewriting has been done, but there is one possible BUG i cannot overcome. I have a standard HSCROLLBAR control used for accepting a numeric input. The control needs to be disabled during complex computational routines to prevent additional user input. I am setting the enabled property to false and reenabling the control at the end of the calculation cycle. The control is enabled and disabled a few times, because some code has been placed in the onpaint event of a drawing area, and separating the calculation part from the drawing part will be a huge task.
Large changes are handled correctly. Small changes aren't. The problem is that the control freezes in a unknown state after clicking on the arrows. A second click makes the control (and its parent control box) jump up and over everything else in their container.The scrollbar remains functional only via the contextual menu. This happens both in debug and release builds. There are no overrides. Coding/Test platform XP SP3 (more than 1 machine).
There is no code whatsoever that handles neither the parent control nor the scrollbar repositioning and resizing. The only code takes the value of the scrollbar and passes to the calculation section. If I omit disabling and reenabling the control, everything works fine.i tried rebuilding the control from scratch. forcing enabling the control after it has gone haywire does not make changes, disabling the groupbox instead of the single control doesn't make any difference, debugging step by step confirms that things go wrong when drawing the controls within the private system form classes.
We are using the .NET PropertGrid to edit the Usersettings of our application. If we use Strings or integers than it works perfectly. Now we need a propery, we call them "Vendor", that store a GUID of the Vendor from a database. But the user didn?t see the GUID in the PG. he can choose beetwen the venders Names in a combobox. This combobox must be loaded from the database I have start to try to solve that with following
[Code]....
I am using VB.NET 2008. I am using propertygrid and have added a few elements. I have 3-4 categories and wanted to know how can I expand/collapse a particular category thru code. I did find a code on net but it didn't work.
View 10 RepliesI have a custom control and have created some properties for it.When I click on that control, its properties are then shown in the PropertyGrid.The problem, is that I only want to show some of the predefined properties as well as my custom properties.Does anyone know how I can filter out the properties I want shown?
View 9 RepliesI'm trying to add a custom DropDown to the PropertyGrid for a control. I am adding the TrackBar control. It works fine, except, I would like to have the values updated in the PropertyGrid as I move the TrackBar. As it is now, it only updates the PropertyGrid when I finish and click off the TrackBar... I know the problem lies in the Type Editor. How can I get it to allow interim values to be processed. Is there some callback function I can use?
Here is the Type Converter code:
Imports System.Windows.Forms.Design
Public Class Slider
Private editorService As IWindowsFormsEditorService
[code]....
1 - Need to create a kind of composite property, like the font property, that it's showed with a plus sign to expand. For example i need to define a new pen, i need to define the color and the width... 2 - I need to define the color for one brush, but if i create a property of the type brush in the PropertyGrid it appears like "System.Drawing.SolidBrush"
View 2 RepliesI have a class that inherits from control with some custom properties added, and I am using a propertygrid to change the properties at run time. I don't want any of the inherited properties of the control available in the PG so to each of my class properties I amassigning a CategoryAttribute and I am adding the same categories to the PG.BrowsableAttributes collection. When I add a single category to the BrowsableAttributes collection it works fine, but when I add more than one, none of the categories show up in the PG. I am wonding if there is a simple setting in the PG, or if I have missed something setting it all up.
[Code]...
Just wondering how i can enable visual styles with the application framework option disabled - it would be nice to have the ability to use the xp+ theming while having a bit more flexibility
View 6 RepliesDoes anyone know of a way have the PropertyGrid control display a NumericUpDown instead of a DropDown box or text box? One of the properties that I need to capture is an integer and I'd like the user to be able to spin up or down to choose a value instead of typing it in.
View 1 RepliesHow do I disable CTR+C in a richtextbox?
View 1 Repliesi did a program on VB 2008 Express Edition but id like to add a feature.Id like that my program could be only accessed if you had an internet conection and if i allowed it. Id like to disable my program whenever I like for the ones who have it cant use it if i dont enable it
View 20 RepliesIn my code i check listview1 values, whether they contain a "Yes" or a "No" if they contain a"No" i was trying to disable the checkbox on listview2 that corresponds to that value so far i have:
If formMain.ListView1.Items(Index).SubItems(2).Text = "No" Then
'// We need to disable all the checkboxes on listview2 that contain "No"
'// And also color code the background
[Code]....
Is it possible to disable ctrl+alt+delete in code? Can anyone post an example?
View 15 RepliesHow do I stop the user from typing into a combo box and only allow them choose from the options available?
View 2 RepliesI have this form with a bunch of input controls. I have code working that will disable them all like I want, but need to work with the if/then statement portion. Basically, it's a "History" form for patients. There's a date field for each entry, and if that date doesn't match the date you're accessing the form I want it to disable all controls so you can't edit the form. So it would have to check the current date with the date that is on the form. Then I also want to have an override button that will ask you if you want to enable all controls anyway, which I can probably figure out. There is some older VB6 code (I think) but I know nothing about VB6 or how it translates.
I think this is the portion that does what I want in VB6:
Private Sub DATE_DblClick(Cancel As Integer)
Call Setdate
Exit Sub
Dim sysDate As Date, Response
sysDate = VBA.Date
[Code] .....
How to have the program check the current date with the date in this form. From there it's probably just a simple if/then statement to fire off either sub. This date control on the form is a DateTimePicker. Maybe I just have to compare that to the system date but I still don't know what to call for that.
how can i disable the Home, End, and the arrow keys Next and Previous?All i need is having all those four keyboard keys disable while my application is running so the app do nothing if one of those is pressed.
View 4 RepliesIs it possible to prevent my program from being ran in Safe Mode and System Restored?
View 5 RepliesSo I need to disable to start menu and have found a code on a website but it doesn't seem to work. Heres the
Dim TFlag As Boolean
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (byval hWnd1 as Long, byval hWnd2 as Long, byval lpsz1 asstring, byval lpsz2 asstring as Long
Private Declare Function EnableWindow Lib "user32" (ByVal hwnd As Long, ByVal fEnable As Long) As Long
[code]....
Edit: I'm creating a program for places like schools or library where the password for all users are the same. I already made the program go to full screen and always on top and have disabled the user from using taskbar but I can't stop the start menu from appearing.