I have some data that I am displaying in a DataGrid. This data has multiple properties, which represent the columns of the DataGrid. One of these properties is a collection of another type of entity.
When a user selects an item in the DataGrid, I want to show the collection of entities in a tabular structure. In a sense, I'm looking to create a DataGrid inside of the RowDetailsTemplate of a DataGrid. I am not set on using a DataGrid, I'm just using this because it is the only kind of control I am aware of that can display tabular information.
My problem is, I do not know how to create the XAML that addresses this type of binding structure. Can anyone show me some code or point me to a code example?
Thank you!
Related
I am looking for a layout control or other means of laying out data in a tabular format on a Fixed Document for reporting. I have used MigraDoc quite extensively in non WPF projects and its table object allows for a granular layout for each piece of data to be displayed in the table. Borders can be turned off on the cell level, columns can be merged/spanned, etc. Are there any controls that offer this kind on control within WPF? I have not seen where the DataGrid or the Grid will do what I need... easily. My data is not bound as I need to have full control over how it is displayed. I am not using a flow document so I cannot use the table object that it offers. Anyone have any suggestions? For now, I have resorted to programmatically creating a Grid and then inserting a Border containing a TextBlock within each cell. There just has to be a cleaner way!
BTW - I am looking to use native WPF controls in this project which is the reason that I am not using MigraDoc.
I am trying to display items in a grid however the rows and the columns should be generated dynamically. I actually implemented a custom control that derives from Grid control and provide additional properties such as RowCount.
Here is a picture of the grid generated by my custom control using two dimensinal string array as datasource:
But i think my control consumes more than needed resources because it simply destroys column and row definitions and recreates them. Is there any simpler way to implement that control?
You don't need to create a custom control to do that for you... you can use a standard DataGrid. There have been a number of questions on displaying dynamic data in a DataGrid. Please take a look at some of these posts:
How do I bind a WPF DataGrid to a variable number of columns?
DataGridColumn Binding with Dynamically Generated Data
Visualizing 2D Data in a Table
Displaying multidimensional data in WPF
I would like to create an input DataGrid - an empty set of rows with the column headers that can be filled with data by a user and then saved to a database. The DataGrid will not be therefore used to display data but acts like an input field. The behaviour would be similar to the one of Excell. The problem is that if the DataGrid has no data provided for it, it is not visible in the application and the user cannot enter anything. Is the DataGrid a good choice? How can this sort of functionality be implemented with a different control? I would prefer to use the DataGrid tough.
Thanks a lot for any help on this.
You can enter data in a DataGrid even without provided data at the start of the application. You just need the correct bindings for your ItemsSource, and set CanUserAddRows to true. Also, the class that corresponds to a row of a DataGrid must implement a parameterless constructor.
In my gridview I need to aggregate subrows into each row, something like in p2p emule/amule application where you can do double click to each file you are downloading and then under it you can see the parts of the file from where you are downloading.
Is it possible in WPF?
Thanks.
You could do a few things:
Add some container (ie: another Grid or a StackPanel) to the Grid row. This would let you add multiple objects to the grid row. On your "double click" event, you could change the visibility to show those objects.
Use a TreeView with a HierarchicalDataTemplate, and treat this as hierarchical data. This is most likely the more "correct" approach. The Displaying Hierarchical Data sample on MSDN walks through the process of this.
I'm using the WPF DataGrid, and I'd like to know if there is any way I can access the DataGridRow's RowDetails programatically.
For example, when the user selects the row, I'd to grab some data from somewhere (say, a database), and display it in the RowDetails.
All of the examples I've seen tend to just display some extra bound data that isn't included in the columns for the row.
You could display some extra data but lazy-load it on SelectionChanged.
It usually is not easy to work directly with the WPF controls, they are not really meant to be used without a backing databound model.
If you have all the data in list of objects (or something similar) then you can do all sorts of fun things. I'm using a WPF Datagrid in this manner, and when a user selects a row, I think populate an editor control above the grid with the row item plus additional details.
That said, there's nothing stopping you from adding in additional information in the grid that's normally hidden and a trigger on row selection to show the additional data
you can use the following code
DataRowView row = (DataRowView)MyDataGrid.SelectedItem;
string strName = row.Row["Name"].ToString(); //where "Name" is the column name