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
Related
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'm new to Silverlight, so this might be a simple question to answer. I have a grid (not DataGrid from the toolkit), so that data displayed in it can be easily tabulated. I want to bind the grid to a string array that never changes, hence the number of rows and columns in the grid will not change either. I see that I cannot specify a template like I can for a ListBox (ListBox.ItemTemplate) and I don't want to define each row and column explicitly (with a TextBlock in each one of them) in XAML. And I also dont want to generate rows and columns dynamically in code behind as it is not blendable. What's the best way to do this?
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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 need a control that can list data in 3 columns, I want to manually add the items (not databind the control).....
firstly I'll populate column 1 and 2, then later when a button is clicked, I need to loop through the values of column 1 and 2, perform an operation, then update the value of column 3.
From what I remember the datagrid does not allow for this , and must be bound to a data source, am I right?
What is the best quick drag and drop control I can use from the toolbox?
Use a ListView with View property set to Details. Then you can add columns to the listview.
From what I remember the datagrid does
not allow for this , and must be bound
to a data source, am I right?
This is not right. The DataGrid can be used in bound or unbound mode. If you don't bind it, you can just add rows and columns and populate cell contents as you need. You could choose to do this if you wish. It will solve your problem.
But I think it would be simpler for you to create a custom class to represent a row and use the DataGrid in bound mode. You can refresh the binding when you click the button.