Dynamic Columns in a WPF DataGrid Control (Part 1)

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The post demonstrates Wpf data grid with dynamically defined number of rows and columns but all cells has the same size. Download application - The post is devoted to the Wpf data grid with dynamically defined number of rows and columns but all cells has the binding columns dynamically datagrid wpf width and the same height. For example, such grid could be used in chess or checkers games for 8x8 field.

Wpf application is done in MVVM pattern with one main window. Dynamic grid is implemented as user control that contains DataGrid control bound to observable collection of collections of cell view models. In this implementation collection of cells is recreated each time if grid width binding columns dynamically datagrid wpf grid height is changed, and it leads to some application pauses. In the following post this issue is solved with asynchronous method that updates cell array. Also, other implementation for cells could be used; for example, 2-dimensional array of cells ICellViewModels[][] works well.

Values of color properties are assigned to corresponding properties of CellView control. View model for each cell implements ICellViewModel interface that defines property for data model that implements ICell interface and command for binding columns dynamically datagrid wpf state for the cell. The same height of cells is controlled by RowHeight property defined in style of DataGrid:. Cell height equals to actual height of data grid minus 2 divided by number of rows.

The same width of cells is controlled by Width property of cell data template:. Similarly, cell width equals to actual width of data grid minus 2 divided by number of columns. And there is a definition of DataGrid control:. Grid with dynamic number of rows and columns, part 1 by Illya Reznykov. Source code Download application - Application has the following features: Background Solution uses C 6.

The same binding columns dynamically datagrid wpf of cells is controlled by Width property of cell data template: And there is a definition of DataGrid control: Wpf application with real-time data in OxyPlot charts. Stay informed - subscribe! Join our newsletter and get the latest content right in your inbox once or twice per week.

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This thread looks to be a little on the old side and therefore may no longer be relevant. Please see if there is a newer thread on the subject and ensure you're using the most recent build of any software if your question regards a particular product. This thread has been locked and is no longer accepting new posts, if you have a question regarding this topic please email us at support mindscape. I've to create a dynamic datagrid and I would like to use your datagrid because of the functionalities.

But in my case I don't know exactly the number of columns that I need. I only know the exactly number after reading a file. So, the creation of my datagrid has to be in code behind. I've a lot of doubts!!!! How can I create bindings to each column? How can I put a column with an checkBox? How can I get the event when the users click on a checkBox? I'm thinking to use your datagrid with an observable collection. And in this datagrid, I need to delete, insert and edit values too. I look your Mindscape sample, but I didn't find anything like that.

What is the best way to do this? When you create the columns yourself, you bind them up to the data by setting the DataGridColumn. This simply tells the column the name or binding path of the property on the data objects. Displaying content within each cell is split into 2 parts: For checkboxes, you'd generally want both the display and edit templates to be a CheckBox, so you can set both these properties to be the same template. In your template, you simply have a CheckBox that binds to the appropriate data.

Listening to when the check box is clicked may be different depending on what you want to do. Generally it is best to listen to changes in the model. To do this using a DataTable, you can attach an event handle to DataTable. The event arguments will give you the index of the row that was changed. Note that this event occurs for all types of changes such as additions and deletions as well. Editing values is fully supported by the DataGrid.

You can also set the AllowUserToAddRows property to true which will display an empty row under all the data that the user can use to add new items to the data grid. Deletions, row relocations and adding rows to arbitrary positions is not yet supported by the UI. You can easily update the model to do these things though.

About About Us Contact Testimonials. Hi Jason, I've to create a dynamic datagrid and I would like to use your datagrid because of the functionalities. Do you have any example to help me? See how far you can get with these suggestions and let me know if you have further questions. Mindscape Megapack All Mindscape products for one awesome price! Mindscape is a registered trademark of Mindscape Limited. Posted on Dec 07