Why Does Form Crash When Change Custom Control
Jun 11, 2009
I have created a custom control that is included in a control library that is referenced by a VB Forms application.
When I modify the control, and have the application open in a VS window, VS usually asks me if I want to reload items that have changed.
However, a couple of times, it has not asked me this, and when I go to open the form that contains the modified control, I get an error window warning me that if I ignore the error message and continue, then I risk making VS unstable. I've learned to ignore this error message, continue, and immediately save the form to a new file.
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Apr 2, 2012
Custom control, based on ProgressBar, in design mode, resizing to larger casues VS to crash, resizing to smaller is fine. The error from the MsgBox is Parameter not valid. The line that is reported at fault is 'rRect(i) = New RectangleF(rPoints(i), rSize)'.The function below is called indirectly from 'Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)'
Private Function GetRoundPath(ByVal r As RectangleF) As GraphicsPath
Dim rPath As New GraphicsPath
Dim rPoints(4) As PointF[code]......
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Jan 21, 2012
I have a User Control which is a customer input form.I'm working on a sales system, when generating a sale, the customer data is populated by a Javascript Auto Complete, but when loading a saved sale, I need to paste a User ID into the control programatically.
<controls:customerDataForm ID='customerForm1' partExchangeMenu="true" showBankDetails="false" customerID="****" runat='server' />
Renders my control on the page within the markup of the parent document (in this case it's called newSale.aspx)In the code behind in newSale.aspx.vb I need to be able to programmtically change the value of the Controls customerID attribute. I can't seem to do it.This is what I have done, following various Googling attempts, but it is always leaving the customerID as zero
Protected Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Init
customerForm1.customerID = "0" '// default Customer ID if no invoice number
If Request.QueryString("invno") <> "" Then
[code]....
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Apr 15, 2009
this forum, I made a custom numeric TextBox that was designed to accept monetary input.
vb.net
Public Class moneyTextBox
[code].....
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Jan 23, 2009
This relates to WPF but is broad enough that a winform answer will do. I have made a few custom controls in the past by inheriting from whatever particular control I wish to inherent from.
I have noticed that I can add a form to a class/user control library from the add new dialog and have it run. When this application is compiled I get a DLL.
So my question is can I use a Form as a custom control. The reason I ask is I am creating a more advanced MsgBox for a new application I require and a form as its container makes the most sense.
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Dec 6, 2011
I have a form named VBProject It has two TextBoxes and one custom control named MyControl which is created in another project.MyControl's project has a form inside, named Form3. When My control is loaded it needs to find all controls in my VBProject and add them into a listbox which is in Form3. Then Show the Form3. In the end ListView need to shows name and text of textboxes but it shows nothing. Here are my codes:
MyControl's Load_Event:
Dim i As Integer = 0
MessageBox.Show("Control Count:" + Me.Controls.Count.ToString)
For Each MyObject In Me.Controls
If TypeOf MyObject Is TextBox Then
[code]...
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May 17, 2010
I created a custom user control named "XYZ" and It is avaialble at the toolbox menu in the design mode and I can drag and drop it to a vb.net Windows form. What I really want is to dynamically to add this user control to the Windows form during the Windows form load event. Actually I want to add this user control to a "split container" named "sc_1" on the tab page named "tp_1" on a tab control named "tc_1" on a Windows form. What is teh vb code to add a user control to a Windows form. I am using vs 2005 and dotnetwork v2.0.
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Aug 11, 2009
I have gradient on a form set as follows in Example 1 below. I also have a custom panel which has its colour set as in Example 2. I want to get the same colour from Example 2 into Example 1. However I am not sure how to do this within example 1.
[Code]...
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Aug 18, 2011
If I drag another Form/Program or maybe lets say a context menu happens to open over my custom Control, this happens.It does correct itself after causing a redraw, however it's quite annoying. Is there anyway to avoid this?
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May 16, 2011
I'm trying to create my own control to build a custom planning on it.After trying it with loose controls I got an error but after advice on my previous post, I redraw everything.I have now the header of the control finished, the header shows the days of the month for as many months that fit in the window.Now I want to put the list of data below it, but it will be more than the windows height, so I need to have a scroll bar that will scroll the data but not the header.I would not like to design my own scrollbar and rather use the scrollbar control for it, but when I put it in, I cannot use the NEW keyword.example:
Dim sb
As
ScrollBar
with this I get the error message: 'New' cannot be used on a class that is declared 'MustInherit'.How can I get a scrollbar on my form to scroll the list only (so not the header)?
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Mar 19, 2009
I'm coming over from VB6 in which you could use 'user controls' to create reusuable custom controls. They were simple and contained and you can easily create several instances of a user control within the same or other apps. In vb2008 there are user controls but I can not figure out how to add them to forms or or other apps. Can someone please give me the the basic steps to add a custom user control to a form or project.
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Dec 7, 2011
Having some issues with creating a simple control in vb.net.
I create a control with a single label in, I don't change anything except the colour of the control and the label and also making the label anchor to the edges ( with a small border around the edge)
When i then build it and add this control to a form. Some of the edges are cut off and it isn't anchored the way it was in the control.[url]...
as you can see in the second image the control has lost its white border at the right and bottom.
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Feb 14, 2010
I created a custom control and add it to a form programatically.
The user can add and move them all over the form.
The problem is when I want to clear the form of my user control I don't know how.
I created an array of my control called ctlCorkNotes
Say I create ctlCorkNotes(1) and now I want to delete it.
How do I do this so it is gone and would have to recreate it to show up again?
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Jan 31, 2011
I have created a custom Combobox and added it to my toolbox, and it works well. Now I have added a custom ListBox to the same file as the combo box, but it does not show on my designer when I place it. I can however add it at runtime.
''ComboBox
<DefaultEvent("SelectedIndexChanged"), _
ToolboxBitmap(GetType(System.Windows.Forms.ComboBox))> _
Public Class ProjectsComboBox
Inherits ComboBox
''My Customization
[Code] .....
I have tried removing the "DefaultEvent..." and still no dice.
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Feb 22, 2011
I have a form with a tab control on it. I would like to be able to rotate backgrounds, from the code.I'd especially like to be able to change just one tab on the tab control. I know how to do this in the IDE, of course.)
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Nov 20, 2010
I have created a user control with some properties but when I change them in a form and build the return to the default value, Here is the code I did:
Public Property ButtonFind As Boolean
Get
Return CmdFind.Visible
End Get
Set(ByVal value As Boolean)
CmdFind.Visible = value
End Set
End Property
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Dec 29, 2011
how to specify a custom icon for display in the toolbox window when you create your own custom control? Something other than the dreaded "gearbox" icon.
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Sep 10, 2009
I have a appliction developed on Visual studio 2003, .Net Frame work 1.1.After I migarted that application to Visual studio 2008, .Net Frame work 3.5, Visual Studio is crashed as opening some Visual basic designer files by Visual Basic Form Editor.The below is detail error message of Visual studio:
Problem signature:
Problem Event Name: CLR20r3
Problem Signature 01: devenv.exe[code]......
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May 23, 2012
im using visual basic.net and this is my problem i have 2 form which have a two datagridview . when i update the datagridview in the form 2 its working fine and when i exit it in the form 1 its also update , but when im trying to to click again the edit button(from form 1) the program is automatically exit or crash.
the code from my form2 exit button
form1.showdialog
me.close
form1 edit button
[Code].....
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Dec 29, 2009
how can i change the control from one form to another form in vb.net like for example in asp.net "response.redirect"
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Feb 8, 2012
i just got visual studio pro 2 days ago and every time i create a project, close VS 2010 and when i come back to work on my project and i click on my Form.vb i got every time : Visual Studio has stopped working.Then i tried run as administrator it doesn't work. What i don't understand it's when i click on show code the form load but the moment i click on it ,it just crashing and it's make me wanna drop laptop cascade...I've look on forum and post here but i haven't saw what i was searching.Here the error that VS show me :(Those files doesn't exist i search)
Files that help describe the problem:
C:UsersUsagerAppDataLocalTempWER152.tmp.WERInternalMetadata.xml
C:UsersUsagerAppDataLocalTempWER18C9.tmp.appcompat.txt
C:UsersUsagerAppDataLocalTempWER3520.tmp.hdmp
[code]....
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Jun 5, 2011
I am here with the same Query but with a different look I want to apply the culture change to my program. I created a class library for culture change. and applied it . It is only working with the form name, i did it with two different languages and got the result. But the controls inside the form remains as it is.
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Sep 14, 2010
I've got a richtextbox control on a form and a menustripitem that allows me to change the font style. What I want to be able to do is to allow the user to type text into the richtextbox control; then if they change the font style using the menu only for newly entered text to change font, and any previously typed text to stay in the previously selected font. The problem I'm getting is that all of the entered text's font style is changed.
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Mar 16, 2011
I need to be able to change my form's opacity without changing the opacity of the components.
I really only need to do this on one form in my entire app, so this is getting a little frustrating
I've been researching for about half an hour now, trying to figure out if it's possible, but I'm coming up short.
I've seen some WPF examples and if it really comes to that, I'm more than willing to change the app from a WinForms app to a WPF app. I've made a WPF app before, so I'm familiar with it. But, I don't want to have to remake my entire project for this one form.
On that note, does anyone know if I can make a WPF form how I need it and just import it into a WinForm app? It doesn't seem possible, but it's better to ask than not. I'll look into this more.
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Dec 16, 2009
I want to change my form Cursors to custom Cursors I add a Cursor file in my project but i don't know how can i change the Cursor.I'm using VS 2005 .net Professional.
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Jun 10, 2011
I want to resize font of all windows form control when i change screen resolution..I am able to resize all the controls but font resize driving me nuts..
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Jun 12, 2011
I am trying some Uiculture change functionality. In that I need the name and text of controls in a form to change the culture. I got some Demo project and it is in C#. I tried to make the same functionality with the C#.net and Also using VB.net. But the below mentioned code returns control name with an underscore as prefix. But I don't want underscore. Code is actually written in Class library. It works perfectly in C#.
Code is written below
Dim fields As FieldInfo() = form.[GetType]().GetFields(BindingFlags.Instance Or BindingFlags.DeclaredOnly Or BindingFlags.NonPublic)
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Jul 11, 2011
I have an ASPX Custom Control which is supposed to load it's properties into an internal collection (defined with PersistenceMode.InnerProperty). Here's the ASPX
<cc:CustomControl runat="server">
<Queries>
<cc:QueryTypeOne ... />
[code]...
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Jan 11, 2010
I am using custom textboxes and I need to be able to set the Text on txb1 based on the Text of txb2. I have simplied my code to the following:
Public Class customtextbox
Inherits TextBox
Public Event ControlReset()
[Code]....
So, when txb1 looses focus, if its Text is "fried", then it sets off txb2's ProcessAlert function. I had tried to change the value of txb2 Text in ProcessAlert function, but didnt work, so I tried to get it to raise an event instead, which then tries to set the Text property. However I still cant set txb2's Text property. The Text property seems to be set for the duration of the "life" of the Event handler. When I step through the forms controls within the Event handler, the changed Text value is there, but not outside of the Event handler.
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Jul 29, 2009
I've created my own ascx control with button inside it. Now I'm using this control inside other control. (In my case it is a webpart). What I would like to do is program button.click logic from my custom control inside webpart
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