I'm having a bit of trouble with creating one of my custom controls. What I've got is a listbox within a usercontrol, and I need to be able to click on the lists items while still in the designer. This would make it act much like the tabcontrol.
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Using Visual Studio 2008.I have been coding for some weeks with a problem whereby if I try to open a certain UserControl in the Designer, I get many errors, all saying the Class of one of the Controls on the Form does not exist.If I rebuild the project, the IDE realises that the class DOES exist and will then render the form for Designing. This has never been ay problem at Runtime.Now, however, if I try to open that same UserControl in the Designer, Visual Studio crashes, sends an error report and restarts.Visual Studio gives me no error report or advice.What can I do now? I need to get to the Designer.
View 1 RepliesWhen attempting to create a UserControl type that must be inherited, when I try to edit one of its child classes in the Form Designer, I am not allowed to edit the child UserControl with the message:
To prevent possible data loss before loading the designer, the following errors must be resolved:
1 Error
The designer must create an instance of type "XX_ExpandContentsPanel2.IOCardMaster", but it cannot because the type is declared as abstract.
This error goes away if I remove the "MustInherit" restriction.Is there some way around this or do I just have to accept the (bonkers-mad) restriction, and not declare my class as as MustInherit, even though it's not a useful control in its own right?
I have been working on a small text editor where you can have more than one file open in the same form. When you click new, it adds a ToolStripSplitButton to a MenuStrip and makes a new form2 as a child.
My question is, when I click the ToolStripSplitButton, I want the MDI child that "owns" that button to come to the top. This is the code for adding the buttons:
Private Sub NewToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NewToolStripMenuItem.Click
Dim f As New Form2()
[Code].....
All I have to show to front is Me.BringToFront() (in form2) but that doesn't do it. I have been looking for a long time now to find the answer. How can I bring it to the front?
I have a application with a toolstrip. I placed a toolstripdropdownbutton on it that is called 'Favorites'.
I add buttons to it programatically during runtime. But how do I add a click event to them? Or does the toolstripdropdownbutton has a click event for his children?
I am attempting to update an existing winforms application, that was created with a dataset control on all the winforms pages. I have ported it from VS 2008 to VS 2010 and I need to update the database section and connect it to the SQL backend using traditional code method.In the Solution explorer, when I click on the Dataset files, and click "Exclude From project" I am unable to build the project.Is it advisable to comment out the code lines that refer to the dataset in the .designer.vb files?
View 1 Replieshow to retrieve child windows so I can click a button.The APIs I am using to get child windows are these:
ParentWindow:
VB.NET
Private Declare Function FindWindow _ Lib "user32" _ Alias "FindWindowA" ( _ ByVal lpClassName As String, _ ByVal lpWindowName As String) _ As Integer
[code]....
Which seems even more loosely defined. I have no idea how to actually use that function with EnumChildWindows or how its parameters are supposed to be used.The description says it's used to enumerate ChildWindows, but isn't that the whole point of the EnumChildWindows API?
Im working with MDI parent/child objects. when closing the child objects i need the child to check to see if it is the last child object before closing. i couldn't find anything on google, maybe im searching for the wrong thing.
View 2 RepliesHow can you add a click event to dynamically created menu item?I thought I could do something like
Loop through all the items in the Menu1.DropDownItems then create a mousedown even on the item and execute an action based off that.I'm new to VB and was wondering what logic to use. Will that even work? How will the events be saved through the life of the application?
I have TreeView Populating from Database And I am Trying to detect the user action on treeview to make some decision that whether user has clicked on Parent node or Child node or child of a child node.Please any one help me to do this that how can i detect the user action on treeview
View 1 Replieswhat account for this error message in ls beta 2?'' The last change wasn't successfully persisted.Please shot down the running application.
View 1 RepliesI'm not sure if this is a bad way of building an application but let's say I have 30 WPF Windows for different screens in my application. I want to build them into a DLL so I was wondering if it is bad design to instead of creating each window as a window, if i can have 1 window that hosts whichever screen is open. So the windows will actually be a usercontrol, or at least act like one. So when you want to go to a different screen, you would just change the content of the 1 window to the content of the "usercontrol" that you want displayed.
View 3 RepliesI am trying to troubleshoot a VB.NET project that contains UserControls (actually, several of them that are displaying the same issues). I am trying to get them to build under x64, but it is impossible. In x86 or AnyCPU, the UserControl builds and shows up in the Toolbox, so I can add or modify it in the forms that require it. In x64, the controls disappear from the Toolbox, I get warnings during build (the current project builds though), I can't see any of the forms - I get errors (please see below) - and projects that require the project with the form as an import will not build.
When I was studying what these UserControls are so that I can maybe rebuild them from scratch, I downloaded code from a book - great learning tool, but I get the same errors[code]...
I'm using Visual Basic in Visual Studio 10 Beta 2.
I did make a library with UserControls In VS2010 and I did a build. After that I want to use my UserControls from the library in a new project in VS2010.
How do I get the UserControls in the ToolBox when I'm desiging? I tried some import statements, but without result.
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I also set a reference to the dll file of the library, but still I don't the UserControl in the TooBox.
I am working on a project and there are about 30 controls that I need to call and update at runtime. I have named the controls day0 - day35 (it is a calendar). Basically, at runtime, I need to call each control's setDate function to display the day number. When I run it, the array just has null/empty.This is the array I am trying to use in the code behind. The controls are names day0-day35.
Private dateArr() As ucMonthDay = {day0, day1, day2, day3, day4, day5, _
day6, day7, day8, day9, _
day10, day11, day12, day13, day14, day15, day16, day17, day18, day19, _[code]....
When this gets called, I get a null pointer exception.I do not understand why the controls are not in the array?
i am having some trouble in my Windows form application. i have 2 forms1st Main / Parent Form2nd Sub / Child Form (Menu)
View 7 RepliesI created an item user_control that has a textbox, button, etc. which will intentionally collect the total quantity of items the user wants.
I dynamically create a few intances of user_control on page_load. If you click the add button for the item quantity it will add to a session variable. however when the user enters a different quantity in the textbox and clicks the add button the total is of the original value of the textbox.
How to get the value the the user has typed in to the textbox to add to total???
I've create a stripped down example below: [UserControl] [Page] [CodeBehind]
UserControl...
<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="BomItem.ascx.vb" Inherits="DynamicUserControl.BomItem" %>
<style type="text/css">
[Code].....
When we create an inherited control then is the Designer still needed or not? Should usercontrols be disposable?What is the difference of using Base and Me when we are setting default properties of our usercontrols?[code]
View 4 Repliesi have no time for design a database and all these things ,i have only one table and i have to fill the answers , i have to finish it within two days.the problem is I have more than 50 questions and i divided them into 3 groups , i putted each question group in User Control, and i am trying to save the values from each user control.
View 4 Repliesi have never used a UserControl in the following manner:In need to make a UserControll that can be put in a list of them depending on how many the user chooses and then if there are more than 4 to have a Vscrollbar to scroll through them.
View 7 RepliesHow to use create and use usercontrols in vb.netadil
View 3 Repliesi've been trying to use customcontrols made in vb.net 2008 but when i try to add them to a vba form using
Dim x as new MyCustomControl.Usercontrol
Me.Controls.Add(x)
it returns "activex can't create object" The control itself has nothing special, it's just random textboxes and a few buttons. why i can't use the control?
Edit: TLB has been addeded on references.
I am having difficulties initiating the 2 usercontrol. The first one works perfect but am not quite sure how to get the second one to initiate.
Code for Custom Tabpage Class
Public Class TabPageEx
Inherits System.Windows.Forms.TabPage
Private WithEvents uc As New UserControl1
[Code].....
Now, I am struggle on how to inititiate the second usercontrol still using the TabPageEx Class. Do I need to make another seperate Class Such as TabpageEx2 too handle usercontrol2? The usercontrol2 needs to happen on form load so that the tab is always present.
Where can I get more information on how to work with usercontrols in vs2010 (VB.NET) I have been programming using mainly form level applications. I have a project I want to convert from windows forms to usercontrols.
View 8 RepliesI am having some trouble in my Windows form application. I have 2 forms:
1st Main / Parent Form
2nd Sub / Child Form (Menu)
Problem:
I want to close my 2nd form (which opens on top of 1st form) when I click on the 1st form.
Here is my Code snippet
'decleare variables
Dim vmcount As Integer
Dim tabcount As Integer[code].....
The trouble I'm having is working out a way to be able to call the objects in the dynamically created usercontrols. I thought a list maybe an option but I am struggling to get the syntax/get it working. Wondering if anyone has some ideas or different approaches..
I have an application which has a tabcontrol that contains two tabpages. I have a custom made usercontrol docked to fill up each of those tabs. When I resize my main form to the minimum size allowed one tab resizes accordingly while the other seems to overflow the area and a couple ui items slip out of access/view.
One usercontrol was quite literally copied from the other and renamed and fields adjusted. The usercontrol size is the same between the two. Within the usercontrols there is a datagridview and a large panel full of textboxes and they have identical sizes and identical anchoring properties and even the same location coordinates.
I'm struggling to find a difference between the two but I really would like the resize behavior to match between the two usercontrols. I was wondering if anyone would have ideas of other things to check I did not mention here?
Is it possible to loop throw all usercontrols in a winform.
I wanna run this treatment within a for each and it loop all usercontrols
Usercontrol11 is one of 20 usercontrols existing in a form (usercontrol11,usercontrol12, etc )[code]...
Can we make a test if a user control, classs, or procedure is working properly without running the whole program?Im testing a user control behaivor but its parent window located deep in the program, is there any way running a control for testing purposes only? im starting to get annoyed by running my whole program to test a user control just to find out that its not
View 1 RepliesThis is probably embarrassingly easy, but I've having problems getting this to work.
On ResidentAddress.aspx, I have 2 user controls (AppName.ascx and NavButtons.ascx). When a textbox in AppName.ascx has focus, I want to update a hidden input field on NavButtons.ascx with the value of "TRUE". In the codebehind page for NavButtons, I want to see what the value of this hidden input filed is. [code]...