I am using a DataGrid to show items from a database table, and I am using EF CodeFirst so the database query automatically generates an object. That resolves in filling my DataGrid with all the information from my database.
The only problem is that I have two columns that I don't want to show. I tried to create a dataTemplate that will generate the grid with the columns I want, but when I bind it to the datacontext it showed no information. If your objective is to display your data without the two columns that you don't need, I would suggest taking the simpler approach of just specifying the columns of your grid explicitly:. I would only use a data template if I wanted to control the way the cells are rendered.
If you are happy with the default presentation I think you don't need a template. Learn more. Asked 7 years, 7 months ago. Active 7 years, 7 months ago. Viewed 22k times. Paste the DataTemplate code that isn't working. Active Oldest Votes. Jakub Kaleta Jakub Kaleta 1, 1 1 gold badge 17 17 silver badges 25 25 bronze badges.
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The DataGrid includes built-in column types and a template column for hosting custom content. The built-in row type includes a drop-down details section that you can use to display additional content below the cell values.
Each row in the data grid is bound to an object in the data source, and each column in the data grid is bound to a property of the data object. To automatically reflect property changes, the objects in the source collection must implement the INotifyPropertyChanged interface.
By default, the DataGrid control generates columns automatically when you set the ItemsSource property. The type of column that is generated depends on the type of data in the column. The following table lists the generated columns types. When columns are auto-generated, you can handle the AutoGeneratingColumn event to customize or cancel columns before they are added to the DataGrid.Bfa season 4 start date
If you add both user-defined columns and auto-generated columns to the DataGridthe user-defined columns are added first. To rearrange the display order of the columns, you can set the DisplayIndex property for individual columns.
You can prevent automatic column generation by setting the AutoGenerateColumns property to false. This is useful if you want to create and configure all columns explicitly. Use the DataGridTemplateColumn type to define a custom column if the built-in column types do not meet your needs.
The DataGridTemplateColumn type provides CellTemplate and CellEditingTemplate properties that enable you to specify content templates for both display and editing modes. For example, you could define a custom column for dates. You can use the Columns collection to programmatically add, insert, remove, and change any columns in the control at run time. Check the IsAutoGenerated property to determine whether a column is auto generated or user defined.
Auto-generated columns will be automatically added, removed, or regenerated when the ItemsSource changes. By default, the entire row is selected when a user clicks a cell in a DataGridand a user can select multiple rows.
You can set the SelectionUnit property to specify whether a user can select cells, full rows, or both. Set the SelectionMode property to specify whether multiple rows or cells can be selected, or only single rows or cells. You can get information about the cells that are selected from the SelectedCells property.
By default, you can sort items in a DataGrid by clicking the column header. You can customize sorting by handling the Sorting event. To cancel the default sort, set the Handled property to true.It is often useful to view data in a DataGrid in different ways by grouping, sorting, and filtering the data. To group, sort, and filter the data in a DataGridyou bind it to a CollectionView that supports these functions.
You can then work with the data in the CollectionView without affecting the underlying source data. The changes in the collection view are reflected in the DataGrid user interface UI. The CollectionView class provides grouping and sorting functionality for a data source that implements the IEnumerable interface.
In this example, a collection of Task objects is bound to a CollectionViewSource. Grouped data in a DataGrid. To group, sort, and filter data in a DataGrid control, you bind the DataGrid to a CollectionView that supports these functions. Create a data collection that implements the IEnumerable interface.
This enables you to data bind to the collection in XAML. The objects in the collection must implement the INotifyPropertyChanged changed interface and the IEditableObject interface in order for the DataGrid to respond correctly to property changes and edits. For more information, see Implement Property Change Notification. To specify how items are grouped in a DataGridyou use the PropertyGroupDescription type to group the items in the source view. Create a PropertyGroupDescription that specifies the property to group by.
You can specify the property in XAML or in code. GroupDescriptions collection. Add additional instances of PropertyGroupDescription to the GroupDescriptions collection to add more levels of grouping. To remove all groups, call the Clear method of the GroupDescriptions collection.
When items are grouped in the DataGridyou can define a GroupStyle that specifies the appearance of each group. If you have multiple levels of grouping, you can apply different styles to each group level. Styles are applied in the order in which they are defined.Hrw in hvac
For example, if you define two styles, the first will be applied to top level row groups. The second style will be applied to all row groups at the second level and lower. Create a GroupStyle that defines the appearance of the row group. To specify how items are sorted in a DataGridyou use the SortDescription type to sort the items in the source view. Create a SortDescription that specifies the property to sort by.
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In code, pass the name of the property to sort by and the ListSortDirection to the constructor. SortDescriptions collection.NET 4. The DataGrid provides a feature called AutoGenerateColumns that automatically generates column according to the public properties of your data objects. It generates the following types of columns: TextBox columns for string values CheckBox columns for boolean values ComboBox columns for enumerable values Hyperlink columns for Uri values.
Alternatively you can define your columns manually by setting the AutoGenerateColumns property to False. In this case you have to define the columns in the Columns collection of the data grid. The data grid includes a variety of selection modes. They are configured by the SelectionMode and SelectionUnit property. The data grid provides features to sort, reorder and resize columns. The data grid also supports grouping. To enable grouping you have to define a CollectionView that contains to least one GroupDescription that defines the criterias how to group.
Second thing you need to do is defining a template how the groups should look like. You can do this by setting the GroupStyle to something like the following snippet. The data grid provides a feature that shows a detail panel for a selected row. The data template gets the object that is bound to this row passed by the DataContext and can bind to it. You can specify a RowDetailsTemplateSelector that selects a data template according to the type or data that this row contains.
To do this, create a type that derives from DataTemplateSelector and override the SelectTemplate method. In the items argument you get the data and you can determine which data template to display. Return an instance of that data template as return value. You can define a an AlternatingRowBackground that is applied every even row. You can additionally specify an AlternationCount if you only want to ink every every n-th data row.
The data grid also supports the feature to freeze columns. That means they stay visible while you scoll horizontally through all columns. This is a useful feature to keep a referencing column like an ID or a name always visible to keep your orientation while scrolling.
To freeze a numer of columns just set the FrozenColumnCount property to the number of columns you want to freeze. You can control the visibility of row and column headers by setting the HeadersVisibility property to either NoneRowColumn or All.
Add new PropertyGroupDescription "Gender". The SelectionMode can be set to Single or Extended to define if one or multiple units can be selected simultaneously.
The SelectionUnit defines the scope of one selection unit. A simple workaround is to hook into the autogeneration, cancel it and always create a DataGridTemplateColumn. Comments on this article Show all comments.
Commented on May Good tutorialThis topic describes the styles and templates for the DataGrid control. You can modify the default ControlTemplate to give the control a unique appearance.
For more information, see Create a template for a control. The following table lists the named parts for the DataGrid control. The default template for the DataGrid contains a ScrollViewer control. The following table lists the visual states for the DataGrid control. The DataGridCell element does not have any named parts. The following table lists the visual states for the DataGridCell element.
The DataGridRow element does not have any named parts. The following table lists the visual states for the DataGridRow element. The following table lists the named parts for the DataGridRowHeader element. The following table lists the visual states for the DataGridRowHeader element. The following table lists the named parts for the DataGridColumnHeader element. The following table lists the visual states for the DataGridColumnHeader element. The following example shows how to define a ControlTemplate for the DataGrid control and its associated types.
For the complete sample, see Styling with ControlTemplates Sample. Skip to main content. Exit focus mode. Disabled CommonStates The control is disabled. InvalidFocused ValidationStates The control is not valid and has focus. InvalidUnfocused ValidationStates The control is not valid and does not have focus.
Valid ValidationStates The control is valid. MouseOver CommonStates The mouse pointer is positioned over the cell. Focused FocusStates The cell has focus. Regular CurrentStates The cell is not the current cell. Display InteractionStates The cell is in display mode.
Editing InteractionStates The cell is in edit mode. Selected SelectionStates The cell is selected. Unselected SelectionStates The cell is not selected. InvalidFocused ValidationStates The cell is not valid and has focus.
InvalidUnfocused ValidationStates The cell is not valid and does not have focus. Valid ValidationStates The cell is valid. MouseOver CommonStates The mouse pointer is positioned over the row.For more information, see Binding Sources Overview.
Columns can display text, controls, such as a ComboBoxor any other WPF content, such as images, buttons, or any content contained in a template. You can use a DataGridTemplateColumn to display data defined in a template. The following table lists the column types that are provided by default. DataGrid can be customized in appearance, such as cell font, color, and size. DataGrid supports all styling and templating functionality of other WPF controls.
DataGrid also includes default and customizable behaviors for editing, sorting, and validation. The following table lists some of the common tasks for DataGrid and how to accomplish them.Tradeford uae
By viewing the related API, you can find more information and sample code. Skip to main content. Exit focus mode. Access selected items Check the SelectedCells property to get the selected cells and the SelectedItems property to get the selected rows. For more information, see SelectedCells. Cancel or change auto-generated columns Handle the AutoGeneratingColumn event. Freeze a column Set the FrozenColumnCount property to 1 and move the column to the left-most position by setting the DisplayIndex property to 0.
Create each column in the DataGrid. Bind each column by setting the XPath on the binding to the query that gets the property on the item source.
DataGrid Styles and Templates
For an example, see DataGridTextColumn. Yes No. Any additional feedback?Data Grid Xamarin Forms Lesson No Nugget! All Xaml
Skip Submit. Is this page helpful? Set the SelectionMode and SelectionUnit properties. Check the SelectedCells property to get the selected cells and the SelectedItems property to get the selected rows.
Handle the AutoGeneratingColumn event. Set the FrozenColumnCount property to 1 and move the column to the left-most position by setting the DisplayIndex property to 0. Describes how to create row details for a DataGrid. Describes how to validate values in DataGrid cells and rows, and display validation feedback. Describes how to interact with the DataGrid control by using the keyboard and mouse.
Describes how to view data in a DataGrid in different ways by grouping, sorting, and filtering the data. Sizing Options in the DataGrid Control.The DataGrid control provides a flexible way to display a collection of data in rows and columns. The built-in column types include a text column, a check box column, a combobox column and a template column for hosting custom content. The built-in row type includes a drop-down details section that you can use to display additional content below the cell values.
The DataGrid control supports common table formatting options, such as alternating row backgrounds and foregrounds and the ability to show or hide headers, grid lines, and scroll bars. Additionally, the control provides several style and template properties that you can use to completely change the appearance of the control and its rows, columns, cells, and row or column headers. The DataGrid has built-in support for Narrator and Touch Narrator to help blind users to navigate and interact easily with the control.
Additionally, the control has built-in support for extensive keyboard navigation through cells, headers, rows and columns. The following guidance sections describe the additional concepts and techniques that you can use to build DataGrid control features into your applications:.
Here's the DataGrid sample source code. You may also leave feedback directly on GitHub. Skip to main content. Exit focus mode. Try it in the sample app. Is this page helpful? Yes No. Any additional feedback?Bacili gram pozitivi frecventi
Skip Submit. Send feedback about This product This page. This page. Submit feedback. There are no open issues. View on GitHub.
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