This article shows you can create or retrieve tables in the code behind. My Columns collection contains an enum which should be represented by an image . It also contains a Message property which should only be displayed in one column . It also contains a Header string which should be displayed as a header for that column. Similarly set the content of the buttons as insert, delete and reset text box. Create a property of type ColumnDefinition, to create columns.
In this application, I use the persistence mechanism to store to and retrieve data from an XML file. Simply replace the properties in bindings according to your own needs. I want my view to bind to the the Rows collection, which contains a collection of Columns. I have a collection that I wish to bind to a WPF grid.
Dynamic Columns in a WPF DataGrid Control (Part
Whereas a ListView/DataGrid will let you do this dynamically through Templates. The standard WPF DataColumn doesn’t allow object tagging. Object tagging is the functionality that allows objects to be tagged to a control.
DataGrid is a data shaping component that allows the end user to manage the data and also display the data on the screen. It provides a feature called AutoGenerateColumns that automatically generates columns. The data model of this sample consists of a User and a Role table, and a UserRole table that is the correlation table between the other two tables. An entry in the UserRole table means that the user has a role assigned (referenced by the role’s id). If there is no entry for a certain user-role combination, then that means that the user in question does not have the corresponding role assigned.
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 source of the bound control is set to the DataGridCell, found as an ancestor of the CheckBox control . The data is kept in three tables in the UserRoleDataSet . The Role and User tables are bound to the data grid controls via a DataView.
- You can have multiple DataTemplates target multiple object types too, so that WPF will “query” what kind of object it is and apply the template you chose.
- The Binding definition in the AddRoleColumn method shown above contains an assignment to the value converter.
- At the contrast of the Grid object witch is defined in the System.Windows.Controls, the table object is defined in the System.Windows.Documents namespace.
- In this article, I will try to make a representation of the Table object.
Therefore this grid has the dynamic contents, displaying each role as a separate check box column. The user-role assignment is done by checking the respective check box. Every DataSet table has a set of events that can be used to get notified on data modifications.. This mechanism is used to add, remove and update the dynamic columns when the role table is modified. This article shows an implementation of dynamic column handling for WPF DataGrid controls. It is a straight forward MVVM implementation where the dynamic column handling is done in the view-model layer.
Row and Column Span
Then set the content of the labels as Id, Name, Email and City . If you are using .Net 4.0, you can use the build in DataGrid control which you can select from the toolbox.
The drawback of this solution is that GUI components spilled over into the ViewModel layer. In the other hand, Table object has more capabilities over the grid element. Within a Table object, Rows must be contained in a TableRowGroup element. The columns are defined first, then come the rows groups those host table rows elements witches host the Tab cells witches host the blocs such as Paragraph elements.
Checkbox Column Style Handling
The DataView allows the modification, insertion and removal of rows and the prevention of these actions. Filtering and sorting can be setup on the DataView as well. The data grid control can handle the data manipulation using the DataView.
Making statements based on opinion; back them up with references or personal experience. // Using a DependencyProperty as the backing store for TableData. After setting , the final source code of the MainWindow.XAML is given below.
@ManuelZanin You could use a Grid with a SharedSizeScope attached property, however that requires you to define the column definitions in advance. In the controls from MSFT there is no feature to bind to a collection of columns in XAML. In order to merge cells in the table you can use the RowSpan and ColumnSpan properties of the TableCell. The below code shows how you can use these properties to create a complex table header.
At the contrast of the Grid object witch is defined in the System.Windows.Controls, the table object is defined in the System.Windows.Documents namespace. Moreover, and at the contrast of the grid element, the Table element must be contained in one of those containers. As an added bonus I added the functionality that the CheckBox control is not shown in the user data grid new item row.
This article describes the dynamic insertion and removal of columns in a WPF datagrid. I am trying to create a GUI for my current project using WPF in C#. I would like to have tabs and each tab should open a table with the same column headers but different contents. There is also the option of using a dynamic object to create your columns. This is a bit laborious but the results are very effective and the solution in general is quite flexible.
The examples provided are overkill, although the principle to make them work is simple. The ListView already has the row/column logic so you don’t have to code it. Then, use a DataTemplate that decides how to render your object. You can have multiple DataTemplates target multiple object types too, so that WPF will “query” what kind of object it is and apply the template you chose. Rachel has a good answer below that is similar to what I would do. I think your issue about the headers might be easier to deal with in a ListView since it’s already a component of ListView.
- It is a straight forward MVVM implementation where the dynamic column handling is done in the view-model layer.
- If you are using .Net 4.0, you can use the build in DataGrid control which you can select from the toolbox.
- The data model of this sample consists of a User and a Role table, and a UserRole table that is the correlation table between the other two tables.
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 is the role that corresponds to the column. The role is tagged to the column and can be retrieved at a later time.
I have tried implementing a solution using this idea but I found issues when I added a header row which I have made independent of the ItemsControl . It is quite tricky to arrange the widths of the columns so that they synchronize. Connect and share knowledge within a single location that is structured and easy to search.
wpf dynamic tables can be inserted, modified and removed in the data grid control and the data tables are directly updated through the DataView. The data grid control’s column property is declared as read-only, so it cannot be bound to a view model property. The DataGridColumnsBehavior is an attached behavior that overcomes this limitation. The sample code implements a user administration form in which users, roles and the user-role assignment can be administered. The roles and the users are displayed in two data grids. The user role assignment is done in the user data grid.
The https://traderoom.info/ data grid column definition is stored in the UserRolesColumns collection. This means that the default columns, the user’s first and last name, have to be in this collection too. This article describes a method many-to-many relations can be displayed and modified in a WPF datagrid control. The rows and columns can be added, removed and modified by editing the rows of the A and/or the B table. In this article, I will try to make a representation of the Table object. This one defines a flexible grid area that contains rows and columns.
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. If the data row is the new item row, then it has a NewItemPlaceHolder. A converter is used to get this information and it is mapped to the CheckBox’s Visibility flag. The DataGridCheckBoxColumn binds the check box control to a 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.