System.Web.UI.WebControls Namespace

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A data bound list control that displays the records from a data source in a tabular grid.

DataGrid Class Members

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Constructors Visibility Constructor Parameters public DataGrid ( )   Fields Visibility Name Type public static const CancelCommandName String public static const DeleteCommandName String public static const EditCommandName String public static const NextPageCommandArgument String public static const PageCommandName String public static const PrevPageCommandArgument String public static const SelectCommandName String public static const SortCommandName String public static const UpdateCommandName String   Properties Visibility Name Value Type Accessibility public AllowCustomPaging Boolean [ Get , Set ] public AllowPaging Boolean [ Get , Set ] public AllowSorting Boolean [ Get , Set ] public AlternatingItemStyle TableItemStyle [ Get ] public AutoGenerateColumns Boolean [ Get , Set ] public BackImageUrl String [ Get , Set ] public Columns DataGridColumnCollection [ Get ] public CurrentPageIndex Int32 [ Get , Set ] public EditItemIndex Int32 [ Get , Set ] public EditItemStyle TableItemStyle [ Get ] public FooterStyle TableItemStyle [ Get ] public HeaderStyle TableItemStyle [ Get ] public Items DataGridItemCollection [ Get ] public ItemStyle TableItemStyle [ Get ] public PageCount Int32 [ Get ] public PagerStyle DataGridPagerStyle [ Get ] public PageSize Int32 [ Get , Set ] public SelectedIndex Int32 [ Get , Set ] public SelectedItem DataGridItem [ Get ] public SelectedItemStyle TableItemStyle [ Get ] public ShowFooter Boolean [ Get , Set ] public ShowHeader Boolean [ Get , Set ] public VirtualItemCount Int32 [ Get , Set ]   Methods Visibility Name Parameters Return Type protected CreateColumnSet ( PagedDataSource dataSource , Boolean useDataSource ) ArrayList protected CreateControlHierarchy ( Boolean useDataSource ) Void protected CreateControlStyle ( ) Style protected CreateItem ( Int32 itemIndex , Int32 dataSourceIndex , ListItemType itemType ) DataGridItem protected InitializeItem ( DataGridItem item , DataGridColumn columns ) Void protected InitializePager ( DataGridItem item , Int32 columnSpan , PagedDataSource pagedDataSource ) Void protected LoadViewState ( Object savedState ) Void protected OnBubbleEvent ( Object source , EventArgs e ) Boolean protected OnCancelCommand ( DataGridCommandEventArgs e ) Void protected OnDeleteCommand ( DataGridCommandEventArgs e ) Void protected OnEditCommand ( DataGridCommandEventArgs e ) Void protected OnItemCommand ( DataGridCommandEventArgs e ) Void protected OnItemCreated ( DataGridItemEventArgs e ) Void protected OnItemDataBound ( DataGridItemEventArgs e ) Void protected OnPageIndexChanged ( DataGridPageChangedEventArgs e ) Void protected OnSortCommand ( DataGridSortCommandEventArgs e ) Void protected OnUpdateCommand ( DataGridCommandEventArgs e ) Void protected SaveViewState ( ) Object protected TrackViewState ( ) Void   Events Multicast Name Type multicast CancelCommand DataGridCommandEventHandler multicast DeleteCommand DataGridCommandEventHandler multicast EditCommand DataGridCommandEventHandler multicast ItemCommand DataGridCommandEventHandler multicast ItemCreated DataGridItemEventHandler multicast ItemDataBound DataGridItemEventHandler multicast PageIndexChanged DataGridPageChangedEventHandler multicast SortCommand DataGridSortCommandEventHandler multicast UpdateCommand DataGridCommandEventHandler

Use the DataGrid control to display the fields of a data source as columns in a table. Each row in the DataGrid control represents a record in the data source. The DataGrid control supports selection, editing, deleting, paging, and sorting.

Different column types determine the behavior of the columns in the control. The following table lists the different column types that can be used.

Column Type	Description
BoundColumn	Displays a column bound to a field in a data source. It displays each item in the field as text. This is the default column type of the DataGrid control.
ButtonColumn	Displays a command button for each item in the column. this allows you to create a column of custom button controls, such as Add or Remove buttons.
EditCommandColumn	Displays a column that contains editing commands for each item in the column.
HyperLinkColumn	Displays the contents of each item in the column as a hyperlink. The contents of the column can be bound to a field in a data source or static text.
TemplateColumn	Displays each item in the column following a specified template. This allows you to provide custom controls in the column.

By default, the AutoGenerateColumns property is set to true, which creates a BoundColumn object for each field in the data source. Each field is then rendered as a column in the DataGrid control in the order that each field appears in the data source.

You can also manually control which columns appear in the DataGrid control by setting the AutoGenerateColumns property to false and then listing the columns that you want to include between the opening and closing <Columns> tags. The columns specified are added to the Columns collection in the order listed. This allows you to programmatically control the columns in the DataGrid control.

NOTE: The order that the columns are displayed in the DataGrid control is controlled by the order that the columns appear in the Columns collection. Although you can programmatically change the order of the columns by manipulating the Columns collection, it is easier to list the columns in the desired display order.

NOTE: Explicitly declared columns may be used in conjunction with automatically generated columns. When using both, explicitly declared columns will be rendered first, followed by the automatically generated columns. Automatically generated columns are not added to the Columns collection.

The appearance of the DataGrid control may be customized by setting the style properties for the different parts of the control. The following table lists the different style properties.

Style Property	Description
AlternatingItemStyle	Specifies the style for alternating items in the DataGrid control.
EditItemStyle	Specifies the style for the item being edited in the DataGrid control.
FooterStyle	Specifies the style for the footer section in the DataGrid control.
HeaderStyle	Specifies the style for the header section in the DataGrid control.
ItemStyle	Specifies the style for the items in the DataGrid control.
PagerStyle	Specifies the style for the page selection section of the DataGrid control.
SelectedItemStyle	Specifies the style for the selected item in the DataGrid control.

You can also show or hide different parts of the control. The following table lists the properties that control which parts are shown or hidden.

Property	Description
ShowFooter	Shows or hides the footer section of the DataGrid control.
ShowHeader	Shows or hides the header section of the DataGrid control.

You can also control the appearance of the DataGrid control by programmatically adding attributes to the <td> and <tr> tags rendered by the control on the browser. Attributes can be programmatically added by providing code in the event handler for the OnItemCreated or OnItemDataBound event.

To add an attribute to the <td> tag, first get the TableCell object that represents the cell in the DataGrid control you want to add the attribute to. The Control.Controls collection for the Item property ( DataGridItemEventArgs indexer ) of the DataGridItemEventArgs object passed into the event handler can be used to get the desired TableCell object. You can then use the AttributeCollection.Add method of the Attributes collection for the TableCell object to add attributes to the <td> tag.

To add an attribute to the <tr> tag, first get the DataGridItem object that represents the row in the DataGrid control you want to add the attribute to. The Item property ( DataGridItemEventArgs indexer ) of the DataGridItemEventArgs object passed into the event handler can be used to get the desired DataGridItem object. You can then use the AttributeCollection.Add method of the Attributes collection for the DataGridItem object to add attributes to the <tr> tag.

BaseDataList   DataList   Repeater   BoundColumn   ButtonColumn   EditCommandColumn   HyperLinkColumn   TemplateColumn

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