I've been working with controls and a flowlayoutpanel (see image) to provide a user a good looking "Menu" from a list of items on my server. Anyway, since there will be a lot of custom controls (The boxes inside the flowpayoutpanel) I am trying to save them some how on the user's settings so it won't have to request the list from my server every time. Thus making the program load faster and saving my server a heavy load of bandwidth. I'll go into a little more detail what the controls consists of. Its mainly just labels, pictureboxes and some hidden strings, when the program gets the list of all items from the server it will grab and separate the info for each control.
So the main question here is, is it possible to save a control and load it again even after the program is closed / reopened? The first thing that came into my head was to write a code on exit, that will go through all the controls in the flowlayoutpanel, get the label's text and picturebox's image locations, etc.. save all that info to a setting, and on the next program startup, it will load the setting instead of fetching the data from my server.
Is there a way to bind the text property of a control to an expression? I have a user control that I add to a FlowLayoutPanel. You can see I have 4 controls in the FlowLayoutPanel below. The first control is a LinkLabel and the other three are my user controls which are numbered 1, 2, & 3. I'd like to bind the label that shows the 1, 2, or 3 to the user controls index within the FlowLayoutPanel.
If I happen to remove the 2nd user control I want the 3rd user control to now display 2. I could use the FlowLayoutPanel ControlAdded or ControlRemoved events, but wanted to see if I could do some binding first.
I've been working for several days on a GUI where a lot of individual data elements need to be displayed side-by-side and wrap to the next line when they overflow; the goal is to not have to explicitly design an individual 'row' element with a set number of elements for this purpose. The FlowLayoutPanel seems great, except...
I need to be able to determine how many elements are on each line (dividing the width of the control by a predetermined value indicating width of child controls does not work); I need to be able to determine how many elements will be on each line (I may need to put 4 elements on line 1, then auto-wrap, then 8 elements on line 2, then auto-wrap, then as many elements as can fit on line 3 before autowrap, then 16 elements on line 4, etc); and finally I'd really like to put a 'line header' at the left margin and a 'line footer' at the right margin, where for example the line header contains a line number and the line footer contains the number of elements on that line.
I am making an invoicing application. I have a label (lblCost) inside of a UserControl (InvoiceEntry) inside of a FlowLayoutPanel (pnlEntries). InvoiceEntry represents a line item on the invoice, and pnlEntries is the "body" of the invoice. pnlEntries can hold several InvoiceEntry controls.
I am attempting to sum all of the lblCost values from each InvoiceEntry control to make a subtotal, and I want that subtotal to change automatically if costs are changed (e.g., a change in quantities being ordered). Is there a way to handle when the lblCost.Text property of any of the InvoiceEntry controls contained within pnlEntries changes?
InvoiceAdd.vb:
' Instantiate objects of the various database interaction classes. Private mCustomer As New Customers Private mItem As New Items
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.
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
I have an application that collects data from the user and reads data from the serial port. After the user has entered the data and the data from the serial port received, I would like to be able save those data into a file, preferably in some database format (e.g. Access mdb file) Can anyone help me with this, I am very confused with vb.net. I have created an Access database and connected it to my "solution", I also have created a datagridview on the form that connects to a table in the database. Now I basically want add two buttons (or menu items) on the form, one that does a "Save As" and allows all of that data to be saved into a separate mdb file, and one "New" button that opens a blank copy of the mdb file for more data to be entered.
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.
If you are working on a project that requires non-standard colours for text, it is possible to choose your colour by specifying the RGB components in the boxes on the colorpicker or by moving the mouse around until the desired colour is obtained. This can be put into one of the custom colour boxes and used until the program is shut down. Is it possible to save that colour to the custom colour box so that the next time the project is run, the chosen non-standard colour re-appears in the custom colour box?
I have encountered a problem at the end of my project. I basically have a really nice RichTextBox control which I have made with help from others, which supports images, text colors, text higlighting, text size, background colors, etc. My problem has come when I try to save the data from the file - it loses text color, formatting, images etc. Is there any format in which I can retain the formatting or should I make my own file type with all the data embeded in a HTML-ish sort of structure, eg:
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
Can a custom control NEW Sub be the only one that executes when Inheriting from an existing control please?I am Inheriting from TabControl and I do not want the base New Sub called, is this possible?In other words, I do not want TabPage1 and TabPage2 to be added.A Form has an Activated Sub which runs once a Form is activated.It is a pity that Microsoft have not got such a method in the baseControl Class otherwise I could have used it within a custom TabControl.
Public Class Form1 Private Sub Form1_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Activated End Sub
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.
What I've done is create a User Control Library (Project) and I've added a single User Control to that project. The control contains a single FlowLayoutPanel, and I created a Property on the control itself to pass the FlowDirection from the Control to its FlowLayoutPanel child.
Build, reference, component appears in the Toolbox and everything works fine, but the property on the control does not appear in the Properties window when I go to edit it at design time.
FlowLayoutPanel will not scroll. The mousewheel event will not fire. The scrollbar appears when it is needed. I thought it was a focus problem, but the panel responds to all other mouse events.
I want to create a chess table, and I've made one with a FlowLayoutPanel and 64 PictureBoxes but I have a little problem. After i add the PictureBoxes I hava a gap beetwen them and I don't want to have it, i've tried 2 posibilities but nothing, I will put an exemple from my code
Private Sub init_table() Dim color As Integer = 0 Dim boundX = 0
I have been dynamically adding user controls to my panel. This user control has a height of 105. If I have my FlowLayoutPanelwidth to only show 1 "column" of controls, it will only display 296 of them. The rest of the controls are grayed out at the bottom of the flowlayoutpanel. If I widen the flp to allow 2 "columns" of controls, I can see 592 of them, with the remainder grayed out at the bottom. I have gone in and resized the user control to make it shorter in height, which works in some respects (i.e. it works when I have two columns, but not just 1), and can go forward with this work-around.
So, I guess my question is, why does the FlowLayoutPanel behave in this fashion? It seems (based on what I saw) that there is a limit to how much data the FLP will show at one time.
[code]I can't figure out how to make those pictureboxes in flowlayoutpanel clickable. Any example will do - opening it in default picture browser, using it as panel background or using it as a picture for separate picturebox - anything will do - I simply do not know how to get the file name assiciated with the particular picturebox in the flowlayoutpanel.
I normally hate posting to these forums - but I've reached my wits end. Before posting I've searched all over the internet and no one seems to have come up with the solution.
I have a flowlayoutpanel with a number of buttons in it - I simply want to be able to click and drag a button and reorder it. Sounds simple but its driving me mad! I've spent hours searching the net for an answer but with no luck - the closest I got was a guy showing how its done in C#....No clue how to translate it.
i've a flowlayoutpanel that will be filled with other controls dynamically. this flowlayoutpanel will not have scrollbars. now my problem is to get the real size, comprensive of the invisible part of the flowlayoutpanel.
I have a need to double buffer a flowlayoutpanel. I have the form set to doublebuffered which is half the story but their is no property in the list to make the flowlayoutpanel do this (although MSDN states that it has this property) how i can set it to true for the panel?
I've got a form with a FlowLayoutPanel (flpPhotos) containing several PictureBoxes that are created on-the-fly based on the photos in the specified directory. What I'm trying to do is right-click on any photo and select an option to delete that photo, view a larger version, etc. When I right-click on an image and select Delete in the PictureBox's ContextMenuStrip, I'm getting a NullReferenceException in the deletion method. When debugging, _selectedImg is Nothing, for reasons I don't understand, as a reference is saved to it in the selected PictureBox's MouseDown event. Incidentally, _selectedPB is also Nothing.
Private _selectedImg As String ' The file path of the image in the selected PictureBox Private _selectedPB As PictureBox ' The PictureBox whose ContextMenuStrip has been instantiated
I am attempting to load all images from a directory to a FlowLayoutPanel. I am using the GetFiles() method to retrieve the files with a filter to just retrieve JPG files. When I run the program, it returns 'Conversion from string "*.jpg" to type 'Integer' is not valid.' exception. The offending line of code is:
For Each foundFile As String In My.Computer.FileSystem.GetFiles(FolderBrowserDialog1.SelectedPath, "*.jpg")
I have small program that allows the user to add clickable pictureboxes to a FlowLayoutPanel. The .Tag property of these pictureboxes contains the link that the user has added to them. I have been doing a lot of research on ways to save forms and data in VB and am kind of overwhelmed with all of the options to choose from. Is there one best way to save the form and data?
I'm pretty sure I have to use XML Serialization in order to properly save the pictureboxes with their respective properties kept intact, but would like some input from the pros.
I am currently implementing a drag and drop feature to reorder a set of user controls that I have put in a flow layout panel. I've turned off wrapping and the flow direction is from top to bottom. Here's how I've implemented the drag and drop feature itself:
UserControl_MouseDown event:
1) Get the mouse offset from the upper left corner of the UserControl
2) Remove the control being dragged from the FlowLayoutPanel and put it in the form
3) Calculate the rectangle relative to the form of the FlowLayoutPanel
UserControl_MouseMove event:
1) Using the mouse offset of the UserControl, figure out the UserControl's new location on the form
2) if that location is outside of the FlowLayoutPanel's rectangle, change the calculation to move it to the edge of the FlowLayoutPanel
3) Move the UserControl
UserControl_MouseUp event:
1) Find the underDrop control (the UserControl under the UserControl that's being dragged)
2) Figure out if the dragging UserControl should go above or below underDrop
3) Add the dragging UserControl to the FlowLayoutPanel and set it's index.
This is working beautifully! It reorders just fine.My issue is when there are more controls than will fit in the visible area. I have AutoScroll set to True, so the scroll bar turns on. When I drag a control to the bottom I turn on a timer that periodically adjusts FlowLayoutPanel.VerticalScroll.Value depending on if the UserControl is at the top of the FlowLayoutPanel or the bottom.
When I move my mouse left or right, the UserControl (who's parent is the form) still gets moved left or right. When this happens, FlowLayoutPanel.VerticalScroll.Value is reset to what it was before I started adjusting the scroll. On top of that, even if I'm careful to move the mouse only up or down back inside the FlowLayoutPanel's rectangle, when the UserControl gets moved, FlowLayoutPanel.VerticalScroll.Value is reset again, so I can't drop it where I want to.why move a control over the FlowLayoutPanel would reset the VerticalScrol.Value? Is there a way to stop this? Is there a better way to scroll inside a FlowLayoutPanel?
