Dynamic Columns DataTable in WPF with MVVM Light 黑夜里的萤火虫

You can use the sample code below or replace this section with your own code. Next, we’ll look at the full feature set for a typical C# or VB.NET datagrid and how the features compare between different grid controls. This is my current cell template with the binding issue highlighted – if there is a way to also bind the Column.Tag.DynamicPropertyName property on the ParentRow.

Every datagrid control automatically generates columns for each field and comes with basic editing and sorting features out of the box. In simple cases, this is all you need, but notice that every column will display in the exact order as they are discovered in the data source. There is an issue with binding to view size – as bindings are executed in single thread, new values of view width and height come in different moments. Dynamic grid is implemented as user control that contains DataGrid control bound to observable collection of collections of cell view models.

How to Add a WPF Datagrid to Your .NET Application

Next, you can explore the column API through Visual Studio IntelliSense and the Properties window to configure additional features. In WPF, we use XAML to define the UI, which is the best place to define the columns. Once the columns are defined in XAML, you can easily rearrange, remove, and format each one. Its functionality is similar to the HTML table but more flexible.

ComponentOne FlexGrid is used to visualize data in table/grid form, and FlexChart is a graphical representation of data. FlexGrid and FlexChart can be synchronously connected to the data to see dynamic updates on any change in data. As you can see, I dynamically create a Binding, and use the index of the column in my model as the binding path.

How to Create Dynamic WPF Charts in .NET C# Apps

When building an application, I might not have the luxury of creating model classes to represent the objects I’ll be rendering on screen, because they are dynamic. If I don’t know the shape of my data, I can use a meta model (a model of the final model) to represent it. Our financial application uses a data source that simulates an actual server providing dynamic data with constant updates. This section provides a tutorial on using the third-party FlexGrid control from MESCIUS for comparison. It requires that you first complete the tutorial above to set up the application and data source. Editing is a critical feature as datagrids, like spreadsheets, are often used for batch editing.

The WPF datagrids will automatically generate all the columns based on your data source. Rarely will the columns be in your or your user’s preferred order, so, in most cases, you will want to reorder or hide some columns. For example, the ComponentOne FlexGrid is a cross-platform .NET datagrid with a WPF version that supports .NET Framework 4.6.2 up through .NET 8 as of this writing. It supports the same production-ready features as the WPF DataGrid control but also accelerates C# development with all the built-in features listed above. The .NET ecosystem has always supported custom components that you can build yourself or purchase from other software development teams.

1. The WPF DataGrid offers the possibility to add rows directly in the data grid.
2. From your sample code it appears you are defining the column header, but are not specifying how to obtain and display the data that goes in that column.
3. After new cells set is created, collection of cell view models should be updated.
4. The DataGridCheckBoxColumn style has to be modified, and the Visibility flag of the CheckBox has to be set, depending on the contents of the DataGridCell.
5. As you can see, I dynamically create a Binding, and use the index of the column in my model as the binding path.
6. For example, you can try using dynamic objects or properties defined directly in the data model, instead of the CustomFields collection.

This generates a simple list of objects and assigns it to the datagrid’s ItemsSource property. For example, many WPF DataGrid features require https://traderoom.info/wpf-dynamically-setting-number-of-rows/ custom converters and styles or rely on configuring the CollectionViewSource. While these may not be “built-in” the same way as WinForms, they are fairly easy to implement, given the nature of the platform. We’ve denoted the “fairly-easy-to-implement” features with a green check in the table above.

I have come up with a solution that involves storing a metadata object on the column and then I bind to the properties on the metadata object in the Tag property. Once rows and columns are added to Grid, you can add anycontents to Grid cells by using SetRow and SetColumn methods. SetRow andSetColumn methods take first parameter as the control name and second parameteras row number and column number respectively. The following code snippetcreates a TextBlock control and displays it in Cell(0,0) that represents thefirst row and first column of Grid. Hey I have a method that returns a viewbox I am generating programmatically and am running into a small issue with the viewbox not being set to the appropriate column.

Wpf application

1. One of my pet peeves with using WPF is that a Grid needs to have it’s Rows and Columns defined.
2. In the meantime, for the dynamic columns, you can consider using an approach without converter.
3. Once the columns are defined in XAML, you can easily rearrange, remove, and format each one.
4. For example, the ComponentOne FlexGrid is a cross-platform .NET datagrid with a WPF version that supports .NET Framework 4.6.2 up through .NET 8 as of this writing.
5. But I still have the problem, that for example the date-field filter does not work, when filtering for a date that exists in the grid, the grid becomes completely empty.
6. I quickly got this solution working as I was able to implement it using a combination of the existing dynamic data filter and transform operators.

Where RowCount and ColumnCount are variables to which the Grid is data bound.

The caller can determine how often the values update and how many update at a time. There are many different ways to implement filtering in a .NET datagrid. You could add a traditional filter row fixed at the top of the datagrid. To see the datagrid in action, we need to set up a sample data source.

I need to populate this user control in a Parent User control which has a Grid. In WPF you can also define DataTemplates for data but it seems much more limited then EditorTemplates. This blog will show how to connect a FlexChart to a FlexGrid to create a bound MVVM (Model-View-ViewModel) scenario similar to Microsoft Excel. Users can add, delete and modify items in FlexGrid, which will reflect in FlexChart. Well, this doesn’t work well with dynamic binding like in my case.

I am working on a dynamic search view wherein clicking a button should add a new row containing 3 combobox and 2 textboxes. The role is tagged to the column and can be retrieved at a later time. The ObjectTag itself is a DependencyProperty that can be attached to any type of control that is derived from DependencyObject.