IDE :: Adding Buttons To A Toolstrip In A Custom User Control
Oct 23, 2009
There is a response to this question using C# - I am looking for a VB answer and the C# code is too deep for me. I have a custom user control and I have a toolstrip on it. I have certain default buttons on the toolstrip, but I want the user to be able to add additional buttons at design time. I exposed the Toolstrip.Items collection in a public property. I can open the collections editor in design time, but I cannot edit the collection.
I have created a Custom control, containing 4 masked text boxes.and most times when i build it, i get a error: "InvalidArgument=Value of '-2147483648' is not valid for row position.' What is it? i searched MSDN, it looks like one of the SQL errors. How can this happen, i didn't use SQL.Edit: i fixed this tool strip problem. seems that i put visible to false unknowingly. I also have a problem with my Tool strip. The tool strip on the top works well, but the one i placed in a table layout panel, is missing from view, it only appears in Design view when i select it from the bottom strip.
I really want to make use of the toolstrip and databinding but these two technologies keep conflicting with each other. I think the root cause is something to with the fact that the toolstrip buttons don't recieve focus in the normal way.
I invite you to try the following:-
1. Create a form and put some text boxes a tool strip with a save button on it.
2. Write a query or sproc to get a datatable back and bind your text boxes to the field in the datatable.
3. In the code behind your Save ToolStripButton put some code that makes an arbitrary change to a field on the dataset (it doesn't matter whther this field is bound to a text box or not). eg:- m_DataTable.Rows(0).Item("CommissionRatePerc") = "0.0000"
4. Put a breakpoint in the save and run the form.
5. Make some changes in the text boxes. Do not leave the last text box but rather click save while a text box whose contents you have edited still has focus.
6. When your code hits the breakpoint, query the value of the data table field that is bound to the text box you were editing when you clicked save - it will still contain the unedited value. Unless you do something about it that unedited value is going to get saved back to your DB.
We did get around this problem by explicetely setting the focus to another control on the form before saving. That worked most of the time because it prompts the text box to flush it's value back to the datatable (nb EndEdit does not work, although you'd have expected it to). However, and this is the reason I suggested you add a line of code that changed a value in the underlying datatable in step 3, if you change a value in code in this way before the value from the text box get's flushed back then it doesn't seem to matter what you do, the user's current edit is simply lost. They will still show in the text box, though, leading your user to believe that the change has been committed when it hasn't. Our final solution is that we never ever change a value in the adtaset in the code behind our toolstrip buttons. That's working but it's a pretty big restriction.
I've got a dynamically filled datagrid view. When a user right clicks a cell in the datagridview, it opens a context menu, located by that cell. The context menu has two choices: A and B. I want to set the value of the cell to A if they pick A, and B if they pick B.I would like to pass the relevant cell as a field in the event args passed to ContextMenu's ToolStripItem.click. So the handler for ToolStripItem A's click event would read the relevant cell from the event args and set it to A , like this...
Private Sub A_Click(ByVal sender As System.Object, ByVal e As Customized System.EventArgs) Handles A.Click e.relevantCell.Value=A End Sub
how to pass a custom event arg. Or if there is some easier way to do this? I can't just use the X and Y coordinates, because the context menu/mouse won't necessary by over the relevant cell.
I am trying to add a checkbox to a toolstrip using the msdn sample of adding a datetime control [URL]...
Protected Overrides Sub OnUnsubscribeControlEvents(ByVal c As Control) Call the base method so the basic events are unsubscribed. MyBase.OnUnsubscribeControlEvents(c) Cast the control to a MonthCalendar control.
I have 26 buttons on my form (each a letter of the alphabet) i want to press a button lets say Z and that it then changes the relevant registry key value of 0 to 1 representing the button has already been clicked (these a-z buttons are to be compared with on/ off switches). This way if I start my program up again the values in the regedit will "memorise" wich buttons were turned on and wich were turned off in our previous program session.
Ultimately the buttons turned off should always appear as red until switched onagain
Is it possible to have a custom control (inherits from Control) and add sub-controls to it (like, a label for example)? Basically I want a composite control. I know controls can contain other controls, but if I try to add a control to MyBase.Controls, this doesn't work because that's readonly.
I have an MDI container with a ToolStrip. I ran into a naming issue with images/icons. I removed the lines of code referring to the image of the buttons in the MDIForm.Designer.VB file. Then, in the actual designer, I imported the image file as a project resource and added this image to each button.
When I view the MDI form in the designer, the buttons appear normally, but when I run the app, the buttons are not there!
Should i have not edited the designer.vb file directly? Can this be fixed without recreating each button?
[Code] I have a panel as the base of my custom control and I am adding other panels to it, along with a flow layout panel(myInnerContainer). I know the code above isn't going to work because when I try to add the regular panels to the main control, they will attempt to be added to the flow layout panel myInnerContainer, and cause a circular error. [Code] but intellisense doesn't display anything which leads me in the correct direction for adding only the buttons to the flow layout panel (myInnerContainer).
We have a ASP.NET web application written in VB.NET where we build content programmatically during the Init event.We make extensive use of user controls, building them on the fly, and I now want to start including SilverLight content.Is there an easy way of embedding a SilverLight application in a control, and then instantiating the whole thing in code, in the same way as you'd programmatically add ordinary ASP.NET controls to a page?The SilverLight component itself works fine when added to a page using the <object> tag but I really want to be able to reuse it elsewhere in code.Since I'm expecting use of SilverLight to increase in our application, and the asp:Silverlight control seems now to be deprecated, I'm looking for an alternative way of wrapping the content.
I need to remove all the buttons in my toolstrip so they can then be repopulated. But I have no idea how to remove them. I tried using a For statement:
For Each ToolStripButton In Mainwindow.FavouritesBar.Items() Mainwindow.FavouritesBar.Items().RemoveAt(Mainwindow.FavouritesBar.Items().Count - 1) Next MainWindow is the name of the form that FavouritesBar (The ToolStrip) belongs to.
I am calling this from another form, but I keep getting a "Collection was modified; enumeration operation may not execute." exception.
how can I stretch my toolstrip buttons? The size of my form is 300 x 250
I only have 5 toolstrip buttons, so the buttons only fill up half of my form. How can I make it so that the buttons stretch to the size of my form? So, that I can fill up the whole toolstrip?
I have seen that BindableAttribute is used to decorate public properties in custom controls. MSDN briefly mentions that it provides the ability to control the binding direction and whether binding is supported at design time.
public class MyControl : Panel { [Bindable(BindableSupport.No, BindingDirection.OneWay)] public string MyString { get; set; }
[code]....
1) I set BindableSupport to No, however I could still do this in markup (.aspx).What does BindableSupport affect then? Does it hide the property in the toolbox?
I found a custom ListBox that, strangely doesn't have an InsertAt method and I would like to add one. The custom ListBox uses an object instead of just a list of strings like a normal ListBox. I was curious what the logic behind inserting a new item at a particular index would be.The only thing I could come up with was add the new ListBoxItem at the end, then using the specified index, I could either keep moving ListBoxItem objects to the bottom, with the Add() method, from that index till the ListBoxItem at that index equals the one added, or I could use that index number in a "calculation" till I know I've moved the correct number of objects.
I have an asp.net usercontrol which represents a "popup" dialog. Basically, it's a wrapper for the jQuery UI dialog which can be subclassed to easily make dialogs. As part of this control, I need to inject a div into the page the control is used on, either at the very top or very bottom of the form so that when the popup is instantiated, it's parent is changed to this div. This allows "nested" popups without the child popup being trapped inside the parent popup.
The trouble is, I can't find a safe way to inject this div into the page. A usercontrol doesn't have a preinit event, so I can't do it there, and calling Page.Form.Controls.Add(...) in Init, Load or PreRender causes the standard exception "The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases."
I thought I had found a solution by using. ScriptManager.RegisterClientScriptBlock(Page, Me.GetType, UniqueID + "_Dialog_Div", containerDiv, False) which seemed to work well normally, but recently a coworker tried putting an UpdatePanel inside the dialog and now she's getting the error "The script tag registered for type 'ASP.controls_order_viewzips_ascx' and key 'ctl00$ContentBody$OViewZips_Dialog_Div' has invalid characters outside of the script tags: . Only properly formatted script tags can be registered."
How are you supposed to add controls to the pages control collection from inside a user control?
VS2008 .NET 3.5SP1 I've got a MenuStrip with dropdowns and a Toolstrip with buttons. I don't want the button images in the image margin of the dropdown because they are too small to read properly. I can't seem to find the ShowImageMargin property (in either the MenuStrip or the ToolStripMenuItems) to turn the margin off. I've constructed the menu items in the designer.
1. I have a DataGridView box, that is connected to a MySQL database via the 'Data Source'. I am trying to do the datagridview1.rows.add("info here"), however i receive an error i cannot do this programmatically. I DO know the code to post to MySQL via the "insert into" la la la.However, I was curious if I can do this via the datagridview a bit..easier/simpler, such as a "datagridview1.rows.add(stuff)" sorta thing.
2. I am attempting to make a custom control, and as with ANY control, they have their.. settings. Example, a textbox, or label, has so you can set the Text. and color, etc.Others, have it (such as datagridview) have the little icon on the control itself, where you click it, and it opens a small window with settings.
I have a piece of software with two tabs, inside each tab there are buttons (the user can add the buttons when they want). when tab1 is full tab2 should start to fill. I currently know how many buttons fit on the screen so I just say something like if buttons > 150 then start to populate tab 2 The problem i have now though is if the resolution is changed then a different amount of buttons can be displayed. so if I put my screen to 1280x720 some buttons are left of. I was thinking of detecting the resolution and then using different cases for different resolutions but this seems very inefficient im wondering if there is a different way?
I've got a page (aspx) that contains a usercontrol (ascx).On postback of the aspx, I'd like to read some control values in the ascx. So upon reading some good articles, I created an event in my aspx that fires on postback.The event handler is in the ascx, and simply writes the values I'm interested in to the viewstate so that the parent page can read them.The problem is my event handler never gets hit, even though I see the event is raised as I step through the code. So my code bombs when trying to read the viewstate (which is empty)[code]Oh, did I happen to mention I'm dynamically loading the ascx? :)
I have a component class that inherits a user control class and i'm trying to inherit from that same class in a new class.public class B inherits class Unfortunately, I get an error pointing to the .g.vb file saying:Base class 'System.Windows.Controls.UserControl' specified for class '...' cannot be different from the base class '...' of one of its other partial types When I swap the "Inherits System.Windows.Controls.UserControl" with inherits from the base class in .vb files the program compiles but when I try to access any of the components I get an error saying "Object reference not set to an instance of an object."Why is it doing this? it's as if the my sub class isn't inheritingUserControl method at all.
I'm trying to build a dial control as a custom user control in VB.NET. I'm using VS2008.so far I have managed to rotate image using graphics.rotatetransform . however, this rotate everything. Now I have a Bitmap for the dial which should stay stable and another Bitmap for the needle which I need to rotate.so far i've tried this:
Dim gL As Graphics = Graphics.FromImage(bmpLongNeedle) gL.TranslateTransform(bmpLongNeedle.Width / 2, bmpLongNeedle.Height * 0.74) gL.RotateTransform(angleLongNeedle)[code].....
As I understand it, the image of the needle should be rotated at angle "angleLongNeedle" although i'm placing the rotated image at 0,0. However, the result is that the Needle doesn't get drawn on the control.
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.
I made a custom progressbar as a user control. And I have only been working with forms 'n classes. As you all know, when you create a component in class, it gives you the dll file for the custom component or whatever you made so you can use it on any program. On my custom progressbar, I don't know how to get the ocx or dll file so I can use it on my other programs. OR.. if this is even possible lol. If you could help me on this, that'd be great. And I don't know how to make a custom progressbar out of a class, only user control, so if you could teach me how to make a progressbar out of a class, then that'd be awesome too.
How to create custom events for contol. i have created a user control mytextbox & i am showing some properties of textbox & now i want to expose user control events
I have created a base class for some user controls, then I created controls that inherit this class. This is so I can CTYPE the inherited controls back to the base class and refer to properties, methods and events in a common interface. The base class declares has some Public Event BLAH(Sender as object, e as EventArgs) declarations. The derived class then has Public Shadows Event BLAH(Sender as object, e as eventargs) declarations. My parent form adds handlers for the BLAH event. When the derived class fires the event, though, it does not get raised to the parent form.
I had this new idea for a user control Sliding Bar/Panel. See screenshot. So I quickly whipped it up but I've got this problem that I cannot figure out why it does not work. Because I wanted to make it nice and tidy I desided to use a Class (Header) and created a TypeConverter (HeaderConverter)
Code: Public Class HeaderConverter : Inherits ExpandableObjectConverter Protected SortOrder() As String Public Sub New() SortOrder = New String() {"Text", "Depth"} End Sub [Code] ..... and goes to the RaiseEvent but nothing happens Why?
I know I could put properties on the Container control to access the ctnbutton Control that is embedded into the control but I thought this might be a nicer way.
I have a user control (SomeUserControl), that I am using in a Main Window. I write my application entirely on SomeUserControl, and Main Window is hosting SomeUserControl and nothing else.
Right now I have a shutdown button (in SomeUserControl), that is supposed to close the Main Window. The reason for this is that I do not want anything from SomeUserControl to close the application itself, but to fire an event from SomeUserControl, and Main Window receives it, and Main Window will close the application instead of SomeUserControl.
How do I do it? I am not familiar with the concept of creating and handling custom events, so if someone could explain it in words and in code as an example, I will be very grateful to you!
Edit: Here's my code so far.
(in Window 2)
Public Event CloseApp As EventHandler Private Sub CancelButton_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles CancelButton.Click DialogResult = False
[Code]....
I want to close the application when I click cancel in Window 2, but I don't want to do it in such a way that Window 2 closes itself, but by sending some notification to Main Window, and Main Window closes the application.
