Can we make the Combo Box not drop down if we click on it even though it have item in the list, button not click-able even though it have the on_click event..textbox not allow to set focus but not in disable mode...everything like design time.. because I want to do drag and drop control like visual studio.. but I can drag now, just when I want to click the control to drag, the control still remain the default function...
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How can i do this ... by the propper way i mean so that the grippers don't even display - like they do with an auto-sized label, or a non-multiline textbox.
View 4 RepliesI recently made some changes to my VB 2008 application, and now there are crosshatched lines throughout parts of my tab-control at design time. When executing the application everything looks fine, and there are no errors generated. Why has this happened?
View 2 RepliesI've written my code to implement a new property and to set the content to this default text and grey the text whenever the textbox is empty, and to hide it when the user starts typing. This all works fine at runtime.[code]My question is this : If I place an instance of the control on a form, and set the DefaultText via the properties grid, why doesn't my Property Set code run?I'd expect the control on the form to show my new DefaultText in the control, but instead it remains blank. When I run the form it does display correctly, but just not at design time. I place a breakpoint in the DefaultText set property code and it simply doesn't run.
View 2 Repliesi have a splitter control on tab 2, a grid and a scheduler control on tab 3..looks fine...i save it....close the form...reopen the form, and the controls are all resized and moved around on me....and not for the better.
wierd thing is that when i run the app, the controls are placed properly, but design time is totally f&*ked up.I know this one isn't me. is it the tab control? should i just do toggle buttons at the top and show/hide my own panels? this is just too freaky to deal with. is there an easy work around for this?
I have a problem. I have created a control, Now whenever I am going to Drug that control on my form then a error popup will appear that says "Failed to create component 'XXXXXXXXX'." System.IO.FileLoadException: A strongly named assembly required. HRESULT: 0x80131044 Is there any facility available in .NET for design time debugging Means If I drug a control on form then I will allow me to debug the control.
View 1 RepliesI created a custom control (inherited from a panel). Then I created some other custom control (textboxes)
I add the panel control to the form, then I add some custom textboxes inside the panel.
Now, if I remove the panel, the custom textboxes don't move. I think, because the custom panel control isn't the parent control of the custom textboxes.
How can I modify my custom textbox class, if I add the textbox to a form, to a panel, to a container, it should have that container as parent.
I got multithreaded scraper and it laggs alot and sometimes it freezes totally.
It works like this. Start Scraping -> Url List -> Scrape -> Add info to datagridview -> Verify info.
Im using threadpool on it. Any tips to make it lag free? What causes it, what I should not do etc?
I have to make a lot of retangular boxes to make my program neat but i'm having a problem of adding boxes. I tried using the draw event in the tab page but everytime i scroll it will draw the lines again and messes up everything. Also when making a line greater that the tab page, autoscroll won't work.
Is there a way to make lines or boxes in design time?
setting the default value for an integer attribute of a custom control seems to have stopped working. The following code adds the Maximum attribute to the design-time properties table, but the default value pops up as 0, not 99:
<System.ComponentModel.Browsable(True)> _
<System.ComponentModel.Category("Behavior")> _
<System.ComponentModel.Description("highest value possible")> _
[Code].....
I am using Visual Basic 2010 for a project.My project requires to place a TRANSPARENT button on top of an image (placed inside a picturebox). for that to work, i need to set the button's parent to the picturebox. Is there a way to do that in design time? I cannot find anything on the property tab. The reason i want to set it on design time is because my project will have a motherload of buttons and it will a pain to code the parent change....
View 3 RepliesThis is a related to my last post, but not enough to make sense as a tag on question.I have a collection(of myClass) that is exposed as a public property in a user control.When I add an item to the collection in code I would make the call collection.add(new myClass) and of course the constructor for myClass is called.When I add items to the collection via the design time menu the constructor for myClass is not called.... of it it is called, I can't see any evidence of it.
View 3 RepliesI'm trying to make a simple User control that houses one collection of a class that I've made. After building the control All works as planned and then randomly when I try to go to the design time interface for the form I placed the control on I get an error page with the following:
To Prevent Possible data loss before loading the designer, the following errors must be resolved:(ignore and continue: which about half the time works and the control shows up and the other part of the time all of the controls on the page are missing)
The one error is the following:Object of type'System.Collections.Generic.List'1[StaticGraphPlot.clsStaticCurveData]' cannot be converted to type System.Collections.Generic.List'1[StaticGraphPlot.clsStaticCurveData]'.
[Code]...
I have created a user control that mimics what a label does. I realize I could have inherited the label control, but I am working on understanding the process. I wish to add items to the control. normally (in the code of my project) would do:
Form1.Label1.Controls.Add(mylabel)
After creating mylabel in the code of course.
[code]....
I have a UserControl class in a Windows Application project. One of the properties of it is a collection of another class that I have defined. I can't seem to find a good example of how to get the standard collection editor working for it at design time.I got it working using some example code I found to a degree, but the data in my collection doesn't get saved. When I exit the form and open it back up in design time the data isn't there any more.Here is my class:
Public Class Gauge
Inherits Control
Private WithEvents _Captions As New CaptionCollection
[code].....
I am creating a user control that contains a panel as well as 4 string and integer properties. I would like to display the text of the properties in the user control during design time.
View 3 RepliesI am having a problem with the Visual Basic property collection editor .
I have created a Custom Type
Public Class Field
Private Item As Integer
Private Name As String = "FieldName"
[ode]....
In my never ending search for more knowledge, I have come across Partial Classes. I was wondering if some of the kind people who actually understand the uses could explain some of them to me. Now I know that when we create a form that we actually create a partial class which the generator rewrites when we add a control or change a property at design-time, and this allows us not to have to worry about setting up the controls ourselves.
[Code]...
I am creating a custom Label control (by simply Inheriting the standard Label control and re-painting the background and text) because I need a very specific background and border. In the constructor of the control, I set the AutoSize property to false so I can have a standard default size for the new label.
Public Sub New()
/*Set the default size of the control to 75x24*/
Me.Height = 24
[code]....
In my application that uses this control, if I create the new custom label at run time (in code), the AutoSize property stays False, and it works properly.If I try to add the new custom label to my form at design time, it comes in with the AutoSize property set to True, and I have to manually set it to False in the properties window. It's not a huge problem, but I don't understand why the behavior is different.
I am creating a User Control where I have a property called Items. Items is of type LibraryPanelBarItem Collection (custom class) which contains a collection of LibraryPanelBarItem objects. I would like to be able to add these at design time by using the Collection editor that VS uses for adding things such as treenodes/listviewitems. Ideally I would also be able to declaratively add them to the html syntax. I can get the Items property to show up but I get no intellisense to add the items between the opening and closing tags. [Code]
View 1 RepliesApparently, an unbound datagridview control cannot be filled at design time, so I have to create rows + fill cells through code. Currently, I use the following type of code to refer to cells:
[Code]...
I have a usercontrol which overrides the property Text. But this property is not shown at design time.If I rename it to caption or value it is shown in properties at design time but Text is not shown.
public Class SomeControl
Inherits System.Windows.Forms.UserControl
Public Overrides Property Text() As String
[code].....
Ive been working recently on a chat. Ive been using FTP to comunicate through both forms but it need to constantly download the new data and make the application freeze. Even with a Backgroundworker. So my question is : is there a way to keep a constant connection between the form and the host? And not LAN ,I mean that doesnt need to be on the same router.
View 1 RepliesI'm using loop to read data from sql and then make some calculations then save it again to another table but when application loop for 3 or 4 times it's freeze but the job is done but if loop = 10 or more then it is freeze and hangup for long time .i need to learn how to make my application working better and never freeze and make application working with any count for loop without freeze .
View 7 RepliesI've got a VB.Net form application that dynamically loads user controls based on which navigation link the user clicks on. I'd like to make it easier to use at Design time by putting a link of some sort to open the User Control at design time. The link would go onto the form in the space where the User Control will be going. This just saves a little time from having to browse through the files to open the correct file.
View 2 RepliesI'm currently working on a treeview but want to add custom nodes at design time, is this possible?Also the treeview is part of a control, so i have created a control designer and added a custom design time form to add my custom nodes, but can't seem to get the nodes into the treeview in design time, and serialize into the form automatically?All my custom tree node is is an extra integer at the minute, but more properties will be added later if I can get this working.
View 6 RepliesOK maybe this is completely silly question that everyone knows the answer to but me! Is it possible to hide a component while in design view? e.g. I'm working with multiple components that overlap and would just like to be able to view/work on one at a time. Have I completely missed something or is this not possible?
View 4 RepliesI've created an SQL Query using the query builder. In the query builder, you can test the query by clicking the button "Execute Query", and entering the desired values in the parameter fields.
My query returns the correct results when I do this, but when I seemingly pass the same values at runtime, I get 0 records returned.The query is designed such that you can pass nulls if you don't wish to filter data by that particular parameter.
SQL Query:
SELECT ID, UPC, Quantity, Manufacturer, Style, Color, Size, Category, DateReceived, Cost, OriginalRetail, Retail, LocationID
FROM Inventory
WHERE (UPC = @UPC OR
[code]....
In the query builder "Execute Query" dialog, I enter a value I know that the db contains in the "Size" field, "1/1/1900" & "1/1/2199" in Dates A & B, respectively, and nulls for all other fields. This returns 1 record, which is just as I expected. It works correctly.But when I pass the same values into the method created by the designer, I get 0 records returned. I can't figure out where the problem lies. Even if I enter nulls for all fields other than the dates, it returns 0. This tells me that the dates are causing the problem, but I can't figure out why, because I'm passing strings equivalent to what I entered in the query builder.
I have a UserControl with a Panel (Panel1). The UserControl has a property Items (type ControlCollection) that returns the Controls collection of Panel1.Via a custom CollectionEditor, I tell the designer that it should add my custom controls called Item (inheriting Control). For the sake of example, the Item control is just a control with a random background color:[code]The custom CollectionEditor creates new Item controls using the DesignerHost service (and its CreateComponent method), so that they appear as actual components in Panel1, selectable during design-time just like any other control.It might be a little hard to see (because the colored Items are docked to the top), but I have selected the red item, which can also be seen from the Properties list.
As you can see in the code, I attach a Click event handler to each item as it is added to Panel1. When clicked, a MessageBox shows the color of the item. Obviously this is just for the sake of this example, but the point is that I need to be able to click an item and something then needs to happen.This works fine during run-time. I can click each item, and the MessageBox shows.The problem is that it does not work (quite obviously) during design-time. When I click it during design-time, it is simply selected (as any other control) and of course does not register any Click (nor MouseClick) events.But, I need the Click event to fire even when in design-time! Clicking an item corresponds to selecting it, and when selected (even in design-time), some other panel (not shown in this example) should be brought to the front so it gets visible. Now, I have created lots of things very similar to this (clicking an item during design-time), but there has always been one major difference: those items were not actual controls on the form. Instead, they were drawn manually on to their parent (and they only looked like separate controls). Obviously there was no design-time support for those 'items' (as they weren't controls), but I could handle clicking them quite easily: by handling the MouseClick event of the parent, I can check the location and see if it falls within an item. If so, that item was 'clicked' (artificially).This time, the items are actual controls, and this method does not work (the parent does not receive a MouseClick event either).So, does anyone know of any way to do this? The only way I can think of right now (although I have no idea how to implement it) is to somehow 'listen' to changes in the designer selection.
I have a TabControl on a UserControl. I want the UserControl to behave like a TabControl as usual (it contains only the TabControl and a Contextmenu), including Design-time behavior.I have spent the last two weeks finding out how to add the Design-time behavior and I think I have come a far way.The problem is with adding TabPages during Design-time (while the UserControl is a custom tabcontrol, it is using regular windows forms TabPages).In the Designer class, I have the following code to add a TabPage:
vb.net
Dim dh As IDesignerHost = DirectCast(GetService(GetType(IDesignerHost)), IDesignerHost) If dh IsNot Nothing Then Dim i As Integer = tc.SelectedIndex Dim name As String = GetNewTabName() Dim tab As TabPage = TryCast(dh.CreateComponent(GetType(TabPage), name), TabPage) tab.Text = name tc.Controls.Add(tab)
[code]....
So it would add the control to the TabPages collection if it was a TabPage, and use the regular routine otherwise.
(I'm now using 'tc.Controls.Add(tab)' again instead of 'tc.tabCtrl.TabPages.Add')
But, I don't think the designer even gets that far because it is telling me I cannot add TabPages to my usercontrol, because only TabControls can accept TabPages... How can I make my usercontrol understand that it is a TabControl (without Inheriting from a TabControl?)
