wpf dynamic table

JSON is one of the most widely used data formats, but working with it can be challenging. In this section, we are going to see two ways data can be retrieved from a JSON string. Changing the SelectionMode to Single only allows the user to select a single item. The DataSet can be used together with database connections to store and retrieve data from SQL servers, etcetera. In this application, I use the persistence mechanism to store to and retrieve data from an XML file. Now you can edit, add or remove data from Flexgrid, which will dynamically update to the FlexChart.

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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. After setting , the final source code of  the MainWindow.XAML is given below. You can also export charts to popular image formats like PNG and JPEG.

wpf dynamic table

Grid Table in WPF

The value converter’s Convert method is called, every time the DataGrid cell is initially modified or lost its focus. In both cases, the user and the role roles are retrieved and the conversion result (if the user has the role assigned or not) is returned. The user row is fetched from the DataGridCell’s DataContext, which contains the DataRowView instance that has the user row in its Row property.

wpf dynamic table

How to create dynamic grid in WPF ? i mean create rows and columns based on Generic list

After new cells set is created, collection of cell view models should be updated. In the previous post, this collection was recreated each time and it leads to application hangs. This issue is solved by asynchronous method of updating current collection.

  1. Dynamic grid is implemented as user control that contains DataGrid control bound to observable collection of collections of cell view models.
  2. Its contents can be stored to an XML file, which is used as a persistence mechanism in this example.
  3. The DataGridCheckBoxColumn binds the check box control to a (nullable) boolean property of the data in the row that it is displaying.
  4. CanUserSortColumns – allows the user to sort the data in the table by clicking on column names.
  5. CanUserResizeColumns – allows the user to change the width of columns in the table.
  6. Also, other implementation for cells could be used, for example, 2-dimensional array of cells ICellViewModels[][] works well.

Add C1FlexChart and C1FlexGrid to the view, bound their ItemsSources and respective properties. Now, create a ViewModel named DataViewModel, which will connect to the View. We can create some properties and methods in ViewModel which can be bound to the view.

Next, a header row is created and added to the table, and the cells in the header row are created and populated with content. Next, a title row is created and added to the table withsome formatting applied. The title row happens to contain a single cellthat spans all six columns in the table.

The value converter’s Convert method is called, every time the DataGrid cell is initially modified or lost its focus. In both cases, the user and the role roles are retrieved and the conversion result is returned. The user row is fetched from the DataGridCell’s DataContext, which contains the DataRowView instance that has the user row in its Row property. The DataGridCheckBoxColumn binds the check box control to a (nullable) boolean property of the data in the row that it is displaying. In this case, it would be a boolean property in the user data row, which represents the user to role assignment. Since there is no such property in the UserTable definition, another solution has to be implemented.

Object tagging is the functionality that allows objects to be tagged to a control. This can be used in situations where the control is available, but an object cannot be accessed using standard application logic. In the case of this sample, the available control is the CheckBox in the DataGridCell and the required object https://traderoom.info/displaying-data-in-tables-with-wpf-s-datagrid/ is the role that corresponds to the column. The relative source of the bound control is set to the DataGridCell, found as an ancestor of the CheckBox control . 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.

wpf dynamic table

Instead of binding to the check box control, a value converter is instantiated and bound to the DataGridCell that will contain the CheckBox control. The Binding definition in the AddRoleColumn method shown above contains an assignment to the value converter. The relative https://traderoom.info/ source of the bound control is set to the DataGridCell, found as an ancestor of the CheckBox control (the binding is defined on the CheckBox level). The DataGridCheckBoxColumn binds the check box control to a boolean property of the data in the row that it is displaying.

The Datagrid column definition in WPF and its corresponding row definition are represented by two parameters – GridWidth and GridHeight. Dynamic grid is implemented as user control that contains DataGrid control bound to observable collection of collections of cell view models. The data is kept in three tables in the UserRoleDataSet (Role, User and UserRole).

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