I'm having the hardest time using the dropdown list side of Krypton Dropbuttons -- specifically, I don't know how to register that I've actually selected something within the dropdown list.
In my project, I am using a dropbutton to apply a change over time, where simply clicking is immediate and the drop list has various increments of time -- I am using tweener-dotnet for the value change over time, as my calculus is awful and why reinvent the wheel?.
I am able to use the dropbutton as a regular button just fine. In addition to that, I've been able to set my ContextMenu in the dropbutton, so when I build the solution and click on the dropdown arrow, the list shows up. What I can't do, however, is figure out how to tell the code that I've actually selected something within the dropdown list.
I've spent a couple hours, collectively, staring at all three iterations of the DropButton examples, and none of them actually show what I'm looking for (seriously, Component Factory?!).
How do I use the dropdown side of the Krypton Dropbutton?
(For open source sake, I may just go back to a regular dropdown list and a regular button, but I really like the simplicity of the Krypton DropButton, and open source isn't really a priority with this project.)
I know that this is late, but I've been dealing with something similar.
For a KryptonDropButton you need to create a KryptonContextMenu, as #Roberto has stated.
Then I went to add a listener to the manu items that I've added to the assigned KryptonContextMenu and found out that the designer does not support the Name property (or maybe I was too blind to find it).
Anyway, I navigated to the designer file I found that those menu items were generated anyway, with default names.
Something like this:
I then went to rename those and added events like I would normally to respond to user selection, but I won't hide that this is overkill.
I'm about a year and a half late, but here's a radiobutton click event.
Just select the control and event at the top of the IDE.
Public Sub KryptonContextMenuRadioButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles KryptonContextMenuRadioButton1.Click
'do something
End Sub
Update 2018: the toolkit has been opensourced here: https://github.com/ComponentFactory/Krypton
Component factory hasn't been actively worked on since 2011. Its still closed source so that is an issue.
The Krypton Toolkit itself is a bit iffy in .net 4 and above. The KryptonContextMenu that you need with the KryptonDropButton is one of the bits that I've been having difficulty getting to work.
Related
I have a listbox in a winforms application that I would like to give a selection behavior that is different than the built in options for the control.If I choose multi-extended, I get what we are accustomed to - ability to use shift or control to select multiple items in the list. The multi-simple option lets you select individually and leave the item selected until you delect it. I'm trying to deal with a slightly different problem that could be solved by a combination of the two options. My users want to be able to use the shift key to highligh a long list and they don't want to accidentally lose their selection if they mistakenly click on one other item in the list. My thought was to keep everything hightlighted until they click a clear button. I kind of think they are asking for something that is not what Windows is meant to do and should not be allowed to do but I thought would post the question so see if anyone has done this before.
I came across a tutorial and some example code for an audio converter. You select the format you want to convert to from a drop down, and when you do all sorts of options appear in a previously blank area, different options based on the format you choose. It's called Audio Converter .NET and is from same author as Audio CD Ripper .NET. I can't find the tutorial, but here is a screenshot.
See how on the right there is extra controls that are not on the left. I was experimenting trying to add another category. I added it to the dropdown, but am unsure how to make it so certain fields come up when it is selected.
I understand that they create those controls for those items, but I don't see how they call the correct one when the combo box selects something. I see controls are created, but if I try to duplicate the controls into another entry in the combo box they don't show up for either the new or old one I was duplicating from.
What's the best way to go about achieving something like this?
Thanks
The easiest way is to create the controls needed for every option in the dropdown inside a panel, and simply turn it's visibility property from false to true whenever it's corresponding option is selected using the combobox's SelectedIndexChanged event handler. (And don't forget to turn the current visible panel's visibility to false)
I'm using .NET's DateTimePicker in a dropdown UITypeEditor to show in a property grid. The DateTimePicker shows a redundant line that means you have to click twice to show the useful calendar bit. How can I hide it so it skips straight to the calendar?
Backstory: Previously used used MonthCalendar, which doesn't have the redundant line. However, MonthCalendar crops itself sporadically (when edit one date in the grid, then another), which looks bad.
I don't think that there is any (easy) way to remove this part because is what defines the DateTimePicker as opposed to MonthCalendar.
What you call "useful calendar bit" is actually a MonthCalendar, why don't you rely on this control instead?
Or if you don't want to rely on MonthCalendar, perhaps you should consider a custom DateTimePicker: lots of codes in internet (sample1, sample2); even creating one by your own (after getting some inspiration from the available ones). Anything before considering the option of modifying a so important part of the control.
I'm hopefully missing something extremely obvious here, but for the life of me I can't figure this out.
I have an AutoCompleteBox control that is retrieving results by way of an asynchronous call, although I can't find a reliable way in which to know when a user has selected an option from the list of returned values. I've tried hooking into the SelectionChanged event, but that fires on every movement within the autocomplete's drop down list, when what I actually want to know is when a user has definitively said "Hey, that's the item I want!" by either clicking it, or selecting it with the return key.
Any advice would be greatly appreciated as this is starting to drive me a tad crazy now. =)
Thanks
P.S. The SelectionChanged event arguments provide AddedItems and RemovedItems, but don't give any direct indication of the type of selection I'm looking for.
There isn't a specific event that indicates that the used has specifically plumped for an option rather then merely browsing.
For you scenario the closest you can get is DropDownClosed or even LostFocus events then access the SelectedItem property.
If you are using the Telerik AutoCompleteBox, perhaps the "OnEntryAdded" event is what you are looking for. I see this question was asked over 4 years ago so perhaps this event didn't exist back then. I just updated to the latest update of Telerik controls (2014 Q2). Here's a quick example. I removed the properties that we're not discussing here to clean it up but, obviously, those will need to be added back in unless you're setting them in code (e.g. DataSourceID).
Source Page:
<telerik:RadAutoCompleteBox ID="RadAutoCompleteBox1" runat="server" OnEntryAdded="RadAutoCompleteBox1_EntryAdded" >
</telerik:RadAutoCompleteBox>
Test Code (in VB):
Protected Sub RadAutoCompleteBox1_EntryAdded(sender As Object, e As AutoCompleteEntryEventArgs)
MsgBox(e.Entry.Text) 'This is just to show you the DataValueField in your dev
MsgBox(e.Entry.Value) 'This is just to show you the DataTextField in your dev
racbCustomer.Entries.Clear() 'This will wipe out the selection(s)
End Sub
Im trying to emulate a 'find as you type' function like that of the address bar ("awesome bar") in FireFox. I want a suggestion box to appear below a textbox, and the suggestion box contains strings that contain what is in the textbox. I looked at the autocomplete feature of a normal WinForms textbox, but it seems to only search the beginning of the strings.
Has anyone here built or have experience with implementing something like this?
edit:
Some clarification- It is a WinForms project.
It needs to search inside a string, not just the beginning (which is what a normal textbox does if i recall correctly). And the suggestions should be displayed in a popup like a textbox autocomplete.
You need to handle the TextChanged event for your text entry field, and when the text changes, start a new thread running that will apply the new search. If the text changes before you get your results back, just kill the thread. If the thread returns results in time, display them.
You can get slightly more advanced (e.g. wait for a short time after the text changes so that the user can type a word without you triggering off loads of useless threads) but essentially that's it.
There was a discussion earlier on this topic where the author concluded that you are better off doing the whole thing yourself.
How can I dynamically change auto complete entries in a C# combobox or textbox?
I did something vaguely similar, but more like the iTunes® search box than the Awesomebar. My control used the textbox to actively filter a grid; so it wasn't for autocompletion.
...but... basically I had a DataView of all eligible items, whenever the TextBox's Text changed I'd update the Filter to hide all non-matching items. It worked well and might suit your needs for filtering the data--but not sure how to go about using it as an AutoComplete source for the textbox.
I have done such a thing for an app of mine not too much time ago.
What I did is make my search function in a new thread, so every time I typed a new letter, it called the search function in another thread, so I could keep on typing.
I can post some code if you need, but this should be enough to get you started. :)
Hemmed and hawed about deleting this after I noticed the OP edit mentioned winforms, but I think it'll be useful to anyone who comes here looking for the same but for asp.net apps.
Just because nobody has mentioned it yet, for a webforms app you absolutely want to do this with ajax (.net controls or pure JS, your choice). The feature is often called "autocomplete" and the one thing you don't want it to be breaking the seamlessness by making server round trips at the page level.
I suggest you look at this and this.
I've used Search As You Type in C# and How do I make a Textbox Postback on KeyUp?
Basically you use the keyup action to call a postback thats attached to the trigger to the update panel. then you do your update in the textbox_changed event with the dataview or whatever your backend looks like.