I'm using the Silverlight Toolkit DataGrid. Grouping is working fine, thanks to the PagedCollectionView class.
My question is, is there an easy way to customize the text of the group header? When I group by "CurrentBook.SubTitle" (just testing it out - grouping by a book's subtitle doesn't actually make sense) it displays "CurrentBook.SubTitle" in the group header of the grid, when I'd prefer just SubTitle.
Obviously I could just make a new property in my ViewModel called SubTitle that passes along CurrentBook.SubTitle, but I'm just wondering if there is any built-in way to affect the group header text.
Its a little difficult to answer this without seeing an example of your code. Follow the advice here and make a style for the DataGridRowGroupHeader with something like PropertyName="{Binding Collection Path=Name}" and add that style to the RowGroupHeaderStyles Property. Im not sure how much more specific I can get without seeing more though.
Related
The best way to show what I need is showing an image:
What is the easiest way to implement this kind of "nested ListView" - each Item can be expanded and has subitems. I want the hierarchy only to show on the first column as shown when any other solution can be accepted.
There are couple of ways to do it. I consider that you are good in WPF and easily check code and take idea from it because it is not easy to give code of your requirement here.
You must need to user Expander for expand and collapse functionality for the detail sections as per you image.
I am sharing some the links from where you can easily get what you want. It is not exact code which you can copy but it will give you basic structure of what you want.
Listview and Expander
Sample-1
Expander and DataGrid
Sample-1
Sample-2
You will enjoy working on this one.
I've been creating an inspection form using WPF and I need a place where users can type an unknown amount of comments (hence why I'm not using textboxes). In my WinForms version of this application, I used a DataGridView and I could enter in as much information as I wanted to. I'm looking to do the same with a DataGrid or an equivalent control in WPF.
WinForms Example
I need to be able to do the same thing in WPF but I can't seem to add any rows in the DataGrid. On top of that, when I try to check CanUserAddRows it unchecks it immediatly.
So I checked out Vincent Sigal's blog post about this issue. He mentions something interesting:
... but beware of CanUserAddRows and CanUserDeleteRows as they can appear a little magical. Their values are coerced based on other properties such as DataGrid.IsReadOnly, DataGrid.IsEnabled, IEditableCollectionView.CanAddNew, and IEditableCollectionView.CanRemove. So this is another thing to watch out for when editing. If you run into a situation where you set CanUserAddRows or CanUserDeleteRows to true but it is changed to false automatically, check that the conditions below are met.
I verified this and my DataGrid is not read-only and it is enabled. Although, I have no idea where to find the IEditableCollectionView.CanAddNew and IEditableCollectionView.CanRemove ...
I don't think my situation should require a binding event on the DataGrid since the user is supposed to enter his comments directly into the DataGrid ... Is what I'm trying to do even possible? Perhaps I should use a different control?
I have to admit that I stopped reading through your question after the first paragraph, so please forgive me if I have understood you wrong... but if you just want to enter multi line text into a TextBox in WPF, you can do it by setting a couple of properties on it:
<TextBox TextWrapping="Wrap" AcceptsReturn="True" />
For a DataGrid, you can set these properties in the DataGridTextColumn.ElementStyle and/or DataGridTextColumn.EditingElementStyle as the WPF DataGridTextColumn multi-line input post shows quite nicely.
Please let me know if I did misunderstand you.
UPDATE >>>
Ok, so I came back to read the rest of your question... answering without reading the question can be risky business on this site. It's just as well that I did too, as I see you also want to know how to use the DataGrid.
I have to start by saying... take a deep breath... WPF is very different to WinForms... very different. In WPF we manipulate data rather than UI objects, so to add a new row actually means adding a new item to a collection. You can find a complete working example on the DataGrid Class page on MSDN.
Please also view the WPF DataGrid Control page on WPF Tutorial.NET for more examples. WPF has a lot to take in for new comers and can be quite bewildering, but it's well worth the trouble when you get into it.
I've got a wpf listview doing the gridview thing and I was wondering how I could add an extra header row above the field's headers?
I need to do this because this gridview shows a LOT of columns, all somewhat related to processes in a warehouse environment. The extra header provides a quick "Visual Grouping" of which fields in the grid are related.
In winforms world on 3rd party grid's they call this extra header row a "Band". I searched around but didn't see anything like this posted.
After posting here and on msdn about overriding a controltemplate to add in this extra header row I got no responses.
So I had to implement my functionality with labels stacked in a grid. I used dependency properties on my View and callback functions to handle size events and set the appropriate label width. I posted another question about this on here.
A bit hacky feeling, but it works until I can determine a better method.
I wanted to know which one amongst Style and UserControl would be better to use in WPF?
For example:
I have created an image button in two different ways.
One uses Style and ContentTemplate property is set.
It uses one other class with dependency properties.
The other way is I have created a UserControl which has a button and its content property is set.
The file UserControl.xaml.cs also contains the dependency properties.
For Code details see the answers of this question:
Custom button template in WPF
Which one would be better to use? In which scenario should one go for Style or UserControl or any CustomControl?
Styles are limited to setting default properties on XAML elements. For example, when I set the BorderBrush , I can specify the brush but not the width of the border. For complete freedom of a control’s appearance, use templates. To do this, create a style and specify the Template property.
Styles and templates still only allow you to change the appearance of a control. To add behavior and other features, you’ll need to create a custom control.
For example,
To create a button like a play button use styles and templates, but to create a a play button which will change its appearance after pausing it use UserControl.
For this type of thing I would go with Style, even though I'm not really adept with graphical tools. I tend to produce a basic, boring style that I can get started with and then prettify it once the application functionality has been verified.
The nicest thing about WPF is being able to distance much of the graphical look, feel and behaviour away from the code.
This allows you to change the style of your application without revisiting the code and indeed means that you can change styles on the fly at runtime.
There is an awkward line to tread with regards to how much behaviour is placed within the XAML and how much is placed within the code. A rough guide would be to decide on what behaviour must always be present within the UI and place that in the code, everything else place within the XAML.
Think of the code as being an abstract class with defined interfaces and the XAML Styles as being classes based on that class and you'll get an idea of what I mean.
Conversely, I know that people who are far more adept at the GUI work prefer to put more functionality in the XAML and others who prefer the code side, because they find the GUI work slow or difficult.
When thought of that way you'll see that there's never really a right or wrong answer, just better solutions that suit your skills.
I have downloaded WPFToolkit, and I am using the DataGrid provided in this package.
I am trying to animate a row disappearance when the row is removed, but I don't know how to do it. Does anyone know how it can be done?
This is the kind of thing that can be tricky in WPF--though your boss will think it should be easy--since WPF is supposed to enable animation and striking visuals. After all, there are all kinds of awesome Silverlight/WPF demos on the web that look great and really sell the tech. Of, course what your boss doesn't know is that those demos were written just to show off the easy, flashy features. Things that are a bit different than standard, however, have a nasty way of being very difficult.
But enough ranting, I'll give you a possible approach, though there may be a far better one:
Let's assume you've bound the DataGrid to some kind of collection, and for sake of argument let's assume its a list of Foo objects, i.e. List<foo> MyFoos. Then you could add a property to the FOO class called BeingDeleted. Then in the template for your DataRowView, trigger on this property to begin a storyboard that animates a fade-out or collapse of that particular row. This is kind of gross, since it implies adding a property to the Foo object that might have nothing to do with it otherwise. You could alternatively create a special wrapper or sub-class of Foo.