We are using XamMultiColumnComboEditor (multi select combo) control in our WPF application. At some stage it is returning Null or behaving errotically. Eventhough we select some items it is returning null. We are populating 500 items in our combo box. Please help us.
Thanks in advance.
Related
How to validate a combobox in silverlight 5 (I am preparing a report in silverlight5 with MVVM pattern and on search button, if the checkbox is checked, the user has to select an item from the combobox..)
Also, i am using the below to set the default content text as "Select One"...is there any other better way to do it. The problem using below link is ..if i select an item from the combobox and then later i decide to keep it blank..i have no way of doing it but reload the webpage..
Silverlight: Default value in Combobox
Any help would be much appreciated..please I need it urgently
Thanks in advance!!
I want to use comobox which is editable in my silverlight project, but silverlight doesnt provide a such control.
If any one knows how to create a custom editable combobox in silvelight 4.0 then please help me.
Editable combobox means:
A combo box providing list of
options.
User can enter the value.
Filtering.
Sounds like you are looking for the AutoCompleteBox.
Allows user to type value
Can simply dropdown like a combox
Partial value typed can be used to filter choices using either StartsWith or Contains mode.
Supports a create new entry operation if the final typed value does not match any existing entry
This control is part of the standard SDK and is found in the System.Windows.Controls.Input.dll. You should be able to drag it from the toolbox.
You can also have a look Lookup Combo Box
I watched a demo video of Mole 2010 (a WPF debugger) in which there is a nice datagrid feature where the header contains a filter textbox, so you can type in a string and filter for that column. Here is the video, the feature is demonstrated at 3:00 minutes
http://www.youtube.com/watch?v=bgMg61iM9G8&feature=player_embedded#at=180
I am interested in replicating that feature, but I am not sure how to do it gracefully. My application is a WPF MVVM EF app, it's my first WPF app.
Is it possible to create a template for the header where I can also add a textbox, and a button with a cross so the contents can be cleared?
If so, how could I bind the textbox to filter its column?
Should I be hiding the actual header row and making an artificial one where I add my own header and textbox and button etc. and then bind them to filter clause properties that I add to my CollectionViewSource when a filter string is typed? I hoped to avoid this so I could retain sorting by clicking the header.
I dont really know how to start this. Are there any gurus that could suggest how this could be done? Thanks!
You might have a look at the BookLibrary sample application of the WPF Application Framework (WAF). It shows how to use a TextBox for filtering the data in a DataGrid. It uses MVVM and the Entity Framework as well.
you might want to try that : http://dotnetexplorer.blog.com/2011/04/07/wpf-itemscontrol-generic-staticreal-time-filter-custom-control-presentation/ => it filters any collections and you just have to decalre the control in XAML...
I'm using infragistics WPF editors and XamComboEditor. In previous WinForms version there was MRU list capability. What it basically does is it displays list of most recently used items at the beginning of the list and separates those items with some separator (which cannot be selected). Regular list of combo box items follows after this separator.
Now, infragistics combo does not provide this functionallity. I'll have to develop it on my own and the question is how to approach this. My biggest concern is how to modify current combo box (it can be regular wpf one) to actually display it.
Any suggestions are welcome.
To handle the actual UI part you can use CollectionViewSource/ICollectionView's Grouping and optionally Sorting (if you want the MRU to be ordered) to modify the ComboBox's view of the collection. Most of the work is going to be setting up the data which will be specific to your situation but all you'll need to do in the UI after you're bound to a grouped ICollectionView is set a GroupStyle on the ComboBox where you probably want to show a separator only for the non-MRU group and nothing for the MRU.
I need to be able to have a SelectionBoxItemTemplate for my ComboBox, but am unsure how to do this or if there is another way in Silverlight 3.0 to do this.
In my drop-down list I have a List of CheckBoxes, and TextBlocks, this works fine,
however the Selected Item is one of these when I click on it, i.e. the Checkbox shows in the top of the Combobox, I don't want this, instead I want it to say "Display", as this is a list of display settings, how can the ComboBox be changed to allow this in Silverlight?
This is not actually possible in Silverlight 3, although the Property can be read, it cannot be sent, marking this as answer, but hope Silverlight 4.0 will support this.