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Category: Devexpress gridview grouping demo

Devexpress gridview grouping demo

Group rows are used to organize data rows into a tree when data grouping is applied. A group row contains a Group Expand Button that enables end-users to expand and collapse a group row, and thus show or hide its child rows. Group rows can also display group summary values. The GridViewAppearances.

GroupRow property. The GridView. RowStyle event. To specify different styles for group rows displayed at different nesting levels, handle the GridView.

Grouping Data

GroupLevelStyle event. When the View has focus, and a group row as well as a data row is focused or selected, the row's appearance is determined by either the GridViewAppearances.

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FocusedRow or GridViewAppearances. SelectedRow property, respectively. When the View loses focus, the focused and selected rows are painted using the GridViewAppearances. HideSelectionRow property's settings. Custom text can be displayed in group rows via the GridView. CustomDrawGroupRow event.

AllowHtmlDrawGroups option is enabled. General Information WinForms Controls. View this topic on docs. The table below lists the main properties that affect element appearance. Appearance The GridViewAppearances. Paint Style GridOptionsView. GroupInterval GridView. GroupFormat GridView. Copyright c Developer Express Inc.

All rights reserved. General Information. WinForms Controls. NET Core Support. What's Installed. Build an Application.

Controls and Libraries. Forms and User Controls. Messages, Notifications, and Dialogs.A user can group data in the DataGrid using a column header's context menu or the group panel. Assigning true to the grouping. Setting the groupPanel. The latter option also accepts the "auto" value that hides the group panel on small screens.

devexpress gridview grouping demo

You can prevent a user from dragging columns to the group panel, in which case it becomes an informative component only: a user can see the columns that participate in grouping, but cannot change them.

Set the groupPanel. You might want to group data initially in this case. If a specific column should never take part in grouping, set its allowGrouping option to false. Such a column cannot be dragged to the group panel, and its context menu does not contain grouping commands. Set the grouping. You can prevent a user from expanding and collapsing groups by assigning false to the grouping.

After that, you can expand and collapse groups only programmatically. Usually, users ungroup data using the same context menu and group panel that they use for grouping. The context menu is now available not only for column headers but for group rows as well. When ungrouping data with the group panel, users drag-and-drop column headers from it back to other column headers. If reordering is enabled, the column is placed where its header lands; if not, it gets its position from the columns array.

A group index is a non-negative integer that specifies a column's group order. This column's values become group keys. A nested group's key includes all parent groups' keys. Assign a non-negative integer to the columns. In the following example, data is first grouped by the "Continent" field, then by the "Country" field.

devexpress gridview grouping demo

You can change a column's groupIndex at runtime using the columnOption id, optionName, optionValue method. All groups You can expand and collapse all groups at once by calling the expandAll groupIndex and collapseAll groupIndex methods without arguments. Groups appear already expanded, a behavior you can change by setting the grouping. Groups of a specific level The same expandAll groupIndex and collapseAll groupIndex methods expand and collapse groups of a specific level if you pass a non-negative integer as the groupIndex parameter to them.The GridView control allows you to display data from a data source in grid.

Grouping Modes and Custom Grouping

The grid displays data source fields and records as columns and rows in a table. The control works only in bound mode. Use the KeyFieldName property to set a data source's key field name. Learn more See demo. The grid supports database server mode. In this mode, the grid loads only required items to the server memory and implements data-aware operations for example, filtering at the database level.

The grid control supports unbound columns that are not bound to any data source field. Use the CustomUnboundColumnData event or specify the UnboundExpression property to populate an unbound column with data. The grid control displays data in a table format. Data sources provide data as fields and records.

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The grid control displays data fields as columns and records - as data rows. You can resize a column header to modify the column's width SettingsResizing. The grid control supports drag-and-drop functionality that allows you to move a column to the desired position among other columns. You can use the AllowDragDrop property to allow end users to move all grid columns or a column's Settings. AllowDragDrop property to enable drag and drop for an individual column. The grid control enables you to organize columns in logical groups bands and display them in multiple rows.

Header bands GridViewBandColumn organize grid columns into logical groups and display hierarchical multi-row headers. Data cell bands Columns allow you to display a data record hierarchically. Specify the CellRowSpan and CellRowSpan properties to arrange a column header and data cells in a data cell band layout. The grid allows you to fix columns on the left side and display these columns onscreen when the columns' total width exceeds the grid width.

The grid can truncate cell ' The grid provides the following built-in edit modes that allow end-users to edit grid data Mode :.

The EditFormLayoutProperties property allows you to customize the edit form layout. See demo. You can sort the grid data by an unlimited number of columns.NET MVC Grid View provides numerous data shaping options — including the ability to group records against an unlimited number of columns.

End-users can group data by dragging column headers to the Group Panel. This panel's visibility is controlled by the Settings. ShowGroupPanel option. Get started today and download your day trial of DevExpress MVC Extensions includes 30 days of free technical support. Refer to the Demos and Sample Applications topic to learn more. NET Subscriptions and are backed by a 60 day unconditional money-back guarantee. To learn more and obtain pricing information, visit the Compare Features and Pricing webpage.

For immediate assistance, contact us by Email at info devexpress. No results found for.

DevExpress WinForms Grid: Group Row API

All Demos. Grid View. Sorting and Grouping. Data Summaries. Data Paging and Scrolling. Version: v vol 2. Change Theme Settings. Themes Defaults. Show All Themes. Base Color. Group by:. Collapse All Rows. Expand All Rows.The grouping feature combines rows with identical column values into the same data groups. Data grouping is enabled in the Data Grid by default. To group data by a column, drag a column header into the Group Panel. Another option is to right-click a column header and select "Group By This Column".

Both approaches work in Visual Studio and at runtime. By default, when you group data by columns, these columns automatically hide from the View, and all groups collapse.

AllowGroup - disables grouping by Grid Columns. AllowGroup - disables grouping by this specific column. AllowMove - prevents end-users from dragging a column header, including dragging it inside the group panel. ShowGroupPanel - manages the group panel visibility. Hiding this panel does not disable grouping.

ShowGroupedColumns - specifies whether or not columns by which data is grouped should still be visible within the View. AutoExpandAllGroups - if this setting is enabled, all groups will automatically expand after grouping. To ungroup data, drag a column header from the group panel to the column header panel, or right-click a column header and select "Ungroup" from the context menu. To remove all grouping, right-click the group panel and select "Clear Grouping".

AllowMove - prevents end-users from dragging a column header, including dragging it away from the group panel. AllowGroup - disables the "Ungroup" option in the column context menu. StartGroupingColumnView. EndGrouping - allow you to re-apply initial column grouping when end-users select "Clear Grouping" in the group panel context menu.

The sample below restores grouping by the "Order ID" column when end-users clear grouping. When data is grouped by multiple columns, you can drag a column header to another position within the group panel to change the group order.

GroupIndex - accepts unique integer values that specify the group level for this column. Setting this property to -1 removes grouping by this column. ShowGroupPanelColumnsAsSingleRow - if this setting is enabled, all column headers within a group panel are arranged in a line. In the figure below, data is grouped against "Country""Region" and "Contact Title" columns.

All three column headers are arranged in a line within the group panel. Hold the Ctrl key when dragging column headers into the group panel to group data by multiple columns at once.

To re-arrange column headers within merged filter blocks, drag a column header with the same Ctrl key pressed.

Column headers within a group panel provide the same features as regular View columns: end-users can click a grouped column header to sort data ascending or descending, and invoke the filter menu to apply filtering. For DateTime columns, end-users can right-click a column header within the group panel and change the "Group Interval" setting.Data Grid. Data Binding. Paging and Scrolling. Filtering and Sorting.

Row Drag-and-Drop.

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Data Summaries. Pivot Grid. Field Chooser. Tree List. Column Customization. Html Editor CTP. Diagram CTP. Document Features. Custom Shapes. Area Charts. Bar Charts. Doughnut Charts. Financial Charts. Line Charts. Pie Charts. Point Charts. Polar and Radar Charts. Range Charts.

devexpress gridview grouping demo

Sparkline Charts. Tree Map. Funnel and Pyramid Charts.

devexpress gridview grouping demo

More Features. Gantt CTP. Bar Gauge. Circular Gauge. Linear Gauge. Tree View. Date Box. Drop Down Box. Number Box.In this example, data is grouped by the Country column and sorted in ascending order.

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Data grouping is allowed if the following grid properties are set to true :. End-users can group data by dragging column headers to the group panel.

Record Grouping

The panel's visibility is controlled by the Settings. ShowGroupPanel option. Use the GroupCount property to get the number of columns used to group data. These columns can be obtained using the GetGroupedColumns method.

Get started today and download your day trial of ASP. NET Controls and Libraries includes 30 days of free technical support. NET distribution. Refer to the Demos and Sample Applications topic to learn more.

DevExpress ASP. NET Subscriptions and are backed by a 60 day unconditional money-back guarantee. To learn more and obtain pricing information, visit the Compare Features and Pricing webpage. For immediate assistance, contact us by Email at info devexpress. No results found for. All Demos. Sorting and Grouping. Grouping Data. Data Summaries.


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