Get A ContextMenuStrip In Relation To The Parent Control It's Under?
Dec 30, 2009
I've made a ContextMenuStrip to use in my program to change the image in a picture box. However, it's used with multiple picture boxes which each need to have their own changed. What I want to do is make my command change only that picture box leaving the others as they were before. An example, if this were a plausible code.
Private Sub TestToolStripMenuItem_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles TestToolStripMenuItem.Click
Self(aka the control that currently has the menu open).Image = My.Resources.Picture
End Sub
I want to program a water supply pipeline network in a treeview control. It has five node (junctions). The parent-child relation is based on a parameter (say pressure). Initially, the node 1 is parent and its child nodes are 2 and 3. The node 3 has child nodes 4 and 5. At run time the pressure changes. Now, node 3 is parent and its child nodes are 1, 4 and 5. The node 1 has child node 2.
in VS 2008, is there a way to design a ContextMenuStrip in a designer without a relation to a specific Form or UserControl class? For example,if you need the same ContextMenuStrip in Form1, Form2 and Form3, in which of them am I to design the ContextMenuStrip? Do I have to add a "pseudo-Form" to the project that contains my shared ContextMenuStrips and create only one instance of that Form, or is there another way? I consider this a programmatic hack, that's why my question is whether the IDE offers something better.
I am going to ask a dumb question. I want to update my tables (two). There is a one to many relation between them. I know how to update when only one table is update, but how do i update when there is many on the other side. My problem is that , if one of the records on the many should become redundant, how would i delete it in the update process. If only the content changes , it is not a problem, i know the data just gets written back to the tables, but if one of the child records is not delete, how would it work I need some clue on the SQL statement using OLEDB
I am developing a small windows application(vb.net).In that i want to have parent child relations in a gridview control. There are lots of examples available on this, but they are using two gridviews for that, but in my case i want the relation to be displayed in a single gridview control itself. When they click the + sign immediate row should populate child rows with it's own header(ie child rows has it's own header which is different from parent header). In my case parent row has 2 columns and child row has 4 columns.
This seems like it should be simple but I am not finding it. In a nutshell, I have placed a treeview on my form and added a contextmenustrip and associated it to the treeview in the treeview properties. I am creating the tree parent and child nodes programmatically. The problem is, I do NOT want the context menu to activate for the Parent nodes when you right click. I need to do one of two things:
1. Disable the context menu for the Parent nodes. OR
2. Remove the context menu association from the treeview and add it to the child nodes programmatically.
I have recently built an N-Tier app using VB.Net 2008. The application is based on Beth Massi's tutorial at [URL] I am trying to incorporate a datagrridview control on a Parent form - one parent (father and mother) to many children. For example,
I would like to know if there is some simple code to release a child control from it's parent control, without having to name the parent control. In pseudocode, I'm looking for something like this:
In vb.net (2008), I want to be able to control when a contextMenuStrip (context menu) is displayed. I don't want it to always appear when the right mouse button is clicked...only when certain criteria within my program are met. I figure I would use addHandler but I'm not exactly clear on how to completely control the opening of the contextMenuStrip. I know I would issue a call to the "open" method to render the contextMenuStrip. However, I am unclear as to how to completely take over control of when to render the contextMenuStrip.
I'm using a ContextMenuStrip for multiple controls and I'm trying to figure out the best way to get the control that was actually clicked on to open the Context Menu. The sender just gives the ToolStripMenuItem reference, which has an Owner property that references the ContextMenuStrip, but I cannot figure out how to tell which control the click came from. There must be a simple way to check this, right? I'm checking it in the ToolStripMenuItem's click event.
Friend WithEvents mnuWebCopy As System.Windows.Forms.ToolStripMenuItem ... Private Sub mnuWebCopy_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles mnuWebCopy.Click
I found a similar post about this, but that mentions using a SourceControl property which I do not see on here.
What I'm trying to do is make my own contextmenustrip for the web browser control, this menu has two items so far: "Select All" which will select all the text displayed and "Copy" which simply copies whatever text is highlighted or selected. No images are displayed so no need to worry about that.
Also I've noticed that whenever a file is dragged from windows and dropped onto the web browser control on my form, the browser simply displays the file (these are xml files that I'm dropping on the control, on my form) which is not what I want it to do, instead I want to grab the file path & name and use it elsewhere. The browser control doesn't have the DragEnter, DragDrop, DragLeave events like labels, forms, textboxes, etc... how would I handle this?
I'm trying to make a program with transparent labels over pictureboxes and when I set the label Parent to the PictureBox the position of the label changes.
i frequently have troubles with the dock property. it seems that either the order of creation or adding to the parent control determines whether or not a control's dock property supersedes another's. e.g. a control with the dockstyle fill will overlap with another docked control on the same parent. does anyone know what the rules are to determine how docking will behave; particularly in dynamically created GUIs?
If I need access to the value of a user control's property BEFORE PreRender, would I need to base the custom control off of one of the preexisting data controls (repeater, listview,etc.)?One of my user controls features a gridview control that is configured based on the user control's properties on which it resides. Several of the key properties alter the SQL Statement for the underlying recordsource. I'm now in a situation where the property that sets the WHERE statement for the SQL Statement needs to tied to a value in the user control's parent FormView. Think of the formview as displaying a customer detail record. The user control takes the customer's account number and then displays data from a related table such as Customer Contact Names. Since the gridview is created before the control's prerender event, working within the prerender event doesn't seem efficient.
I am using Visual Basic .Net 2005 professional.From what I understand, I should be disposing of any object that is an unmanaged resource. I understand the best way to tell if a resource is unmanaged is if it has a Dispose method. ie: If I type a dot after my object, intellisense shows .Dispose() as one of the options. If it does, it's an unmanaged resource. Is that correct? In that case, pretty much every control is an unmanaged resource: buttons, forms, panels, etc.In the application I am working on I use an MDIparent container form, which contains MDI children forms, which themselves contain Panels, Menus, Groupboxes, etc, which in turn contain Buttons, Textboxes, Labels, Dropdowns, etc.Do I have to dispose of each button, textbox, label and dropdown within a panel before disposing of the panel?
Do I have to dispose of each panel, menu, and groupbox before disposing of the MDI child form?.Or can I just call the Dispose() method of the MDIchild form and the GarbageCollector will take care of all the controls and resources within the form?Watching the "mem usage" in Windows Task Manager seems to be an unreliable way to detect if I have a memory leak. The numbers just keep climbing and falling (mostly climbing) erratically and without any activity performed on the application. Is there some (relatively) easy way to detect leaks?
I have a UserControl named DataGridViewFilterAndSorter that I built using a SplitContainer. In each Panel of the SplitContainer contains a FlowLayoutPanel and in each FlowLayoutPanel contains a LinkLabel.
I have a procedure that accepts a reference to one of the FlowLayoutPanels in the UserControl. I want to get a reference to the UserControl (DataGridViewFilterAndSorter) using the FlowLayoutPanel reference. Currently, I have to use this[code]...
i need a solution to drag and drop a child control with in the bounds of a parent control means i had a panel with 300*300 pixels and i had to drag and drop a textbox within the panel how
i was designed a form with more controls now i want to moved a [textbox] control into Panel1 but this control has already placed in Panel2. So i want to move this textbox Panel2 to Panel1 how can i do this i don't want to create new Instance.
adding the properties of a control to its parent? Without having to rewrite all the properties... For example, if I have an user control with a button inside, and I want to have the "text align" property of the button, in the list of properties of the usercontrol. If not, is there a way of making the child control of an usercontrol editable?
I'm making a custom control that can be dragged around and it is semi transparent. I need it so that while it is moving (the mousemove event) that if it intersects a control that its parent becomes that control. I tried to have it iterate through all the controls and if control.bounds.intersectswith me.clientrectangle then me.parent = control type thing, but it did not work.
I'm creating an app for school to mark targets that we shoot in shooting competitions. Now I have created a dll in C# to do the marking bit and it works.Now the problem I am facing is that my app gets a image from the scanner (A4 size @ 600 dpi) and putting it in a picture box.There will always be 20 targets to be marked per image( However I want this to be able to vary to provide flexibility) My dll accepts a image that contains a single target so I need 20 individual images of targets.Create Drag able Rectangles in the picture box and crop the images from there . There are 2 ways of accomplishing this.
#1 Create a Control and set it's parent to the picturebox. (This should provide a location relative to the picturebox Right ?)
#2 Use only GDI (eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeew)
so my choice would be to create a control except I have never created any control from scratch and I have no idea how to do the visual drawing part of a control.
I 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 have a .aspx page that loads three separate .ascx controls to represent adding, editing and listing objects. It currently simply swaps out visibility and enables/disables the controls to switch between pages.However, when listing objects (in a gridview), we offer the basic "Edit" button beside each one. Clicking on this will, obviously, load up the edit control for that user. This functionality exists inside of the control, rather than the parent page. Is it possible to modify attributes for the parent based on events occurring in a child control? (For example, change the visibility and enable/disable the other children controls)
I have a user control that is created within a tab control every time a user creates a new tab, so each tab on a tab control contains a new instance of the user control. From within the user control I would like to get the parent tab's index, so that I can dynamically alter properties of the tab, such as the tab's title.
I need a solution to move a child control with in the bounds of a parent control means I had a panel with 300*300 pixels and I had to move a textbox within the panel how?
Using MDI in .net, how do you reference a control on a parent form from a child? Like, if on the parent I have a textbox called txtBox1, what could I do from the child form to read the contents? I've been googling unsuccessfully all day. The closest I've found is
Parent!ControlName.Property
I don't know what the ! is supposed to mean, but I get an error here: Class 'System.Windows.Forms.Control' cannot be indexed because it has no default property.
