RadGrid for ASP.NET
Table of Contents
  • At a glance
  • Installation and deployment
  • DNN
  • Licensing
  • Already using the control
  • Functional overview
  • ASP.NET 2.0 Features
  • Getting Started
  • Grid columns
  • Grid rows
  • Defining Structure
  • Visible/Enabled conventions
  • Populating the control with data
  • AJAX
  • Sorting
  • Paging
  • Scrolling
  • Grouping
  • Filtering
  • Selecting grid items
  • Insert/Update/Delete records
  • Hierarchical grid types and Load modes
  • Design-time support
  • Controlling visual appearance
  • Localization/Accessibility
  • RadGrid export
  • The control lifecycle
  • Performance tips and tricks
  • Getting familiar with server-side API
  • Getting familiar with client-side API
  • Telerik RadGrid inheritance
  • How-to
  • Troubleshooting
  • Integration with other controls
  • Client-side API Reference
  • API Reference
    • Telerik.RadGridUtils Namespace
    • Telerik.WebControls Namespace
      • GridBaseDataList Class
      • GridBoolColumnEditor Class
      • GridBoundColumn Class
      • GridButtonColumn Class
      • GridCheckBoxColumn Class
      • GridCheckBoxColumnEditor Class
      • GridClientDeleteColumn Class
      • GridClientEvents Class
      • GridClientMessages Class
      • GridClientSelectColumn Class
      • GridClientSettings Class
      • GridColumn Class
      • GridColumnCollection Class
      • GridColumnCreatedEventArgs Class
      • GridColumnCreatingEventArgs Class
      • GridColumnEditorBase Class
      • GridColumnEditorException Class
      • GridColumnsReorderEventArgs Class
      • GridCommandEventArgs Class
      • GridCommandItem Class
      • GridCommandItemSettings Class
      • GridCreateColumnEditorEventArgs Class
      • GridDataChangeEventArgs Class
      • GridDataInsertItem Class
      • GridDataItem Class
      • GridDataItemCollection Class
      • GridDataKeyArray Class
      • GridDeletedEventArgs Class
      • GridDetailTableDataBindEventArgs Class
      • GridDropDownColumn Class
      • GridDropDownColumnEditor Class
      • GridDropDownListColumnEditor Class
      • GridEditableColumn Class
      • GridEditableItem Class
      • GridEditCommandColumn Class
      • GridEditFormInsertItem Class
      • GridEditFormItem Class
      • GridEditFormItem.EditFormTableCell Class
      • GridEditFormSettings Class
      • GridEditManager Class
      • GridException Class
      • GridExpandColumn Class
      • GridExportSettings Class
      • GridFilterFunction Class
      • GridFilterFunction.FunctionEntry Class
      • GridFilterFunction.StringFunctionEntry Class
      • GridFilteringException Class
      • GridFilteringItem Class
      • GridFilteringParamsException Class
      • GridFilterMenu Class
      • GridFooterItem Class
      • GridGroupByException Class
      • GridGroupByExpression Class
      • GridGroupByExpressionCollection Class
      • GridGroupByExpressionCollection.GridGroupByExpressionEnumerator Class
      • GridGroupByField Class
      • GridGroupHeaderItem Class
      • GridGroupingContext Class
      • GridGroupingSettings Class
      • GridGroupPanel Class
      • GridGroupPanelImageButton Class
      • GridGroupPanelStyle Class
      • GridGroupsChangingEventArgs Class
      • GridGroupSplitterColumn Class
      • GridHeaderItem Class
      • GridHierarchySettings Class
      • GridHyperLinkColumn Class
      • GridImage Class
      • GridImageButton Class
      • GridIndexCollection Class
      • GridInitializeEditFormContainer Class
      • GridInitializePagerItem Class
      • GridInsertedEventArgs Class
      • GridInsertionObject Class
      • GridItem Class
      • GridItemBuilder.GroupingHelperDataRow Class
      • GridItemBuilder.GroupingHelperDataTable Class
      • GridItemCollection Class
      • GridItemCreated Class
      • GridItemDataBound Class
      • GridItemEventArgs Class
      • GridItemEventInfo Class
      • GridMenuItem Class
      • GridMenuItemClickEventArgs Class
      • GridMenuItemCollection Class
      • GridMultiRowItem Class
      • GridNeedDataSourceEventArgs Class
      • GridNestedViewItem Class
      • GridNoRecordsItem Class
      • GridNotSupportedException Class
      • GridObjectWithState Class
      • GridPageChangedEventArgs Class
      • GridPagerItem Class
      • GridPagerStyle Class
      • GridPageSizeChangedEventArgs Class
      • GridPagingManager Class
      • GridPanelItemsStyle Class
      • GridPdfSettings Class
      • GridPostBackReferences Class
      • GridPropertyEvaluator Class
      • GridRelationFields Class
      • GridResizing Class
      • GridRowIndicatorColumn Class
      • GridScrolling Class
      • GridSelecting Class
      • GridSelfHierarchySettings Class
      • GridSortCommandEventArgs Class
      • GridSortExpression Class
      • GridSortExpressionCollection Class
      • GridSortingSettings Class
      • GridSplitGroup Class
      • GridStatusBarItem Class
      • GridStatusBarItemDecorator Class
      • GridStatusBarItemSettings Class
      • GridStringArrayConverter Class
      • GridTableCell Class
      • GridTableHeaderCell Class
      • GridTableItemStyle Class
      • GridTableRow Class
      • GridTableView Class
      • GridTableViewCollection Class
      • GridTableViewCollection.GridDataTableEnumerator Class
      • GridTableViewRelation Class
      • GridTableViewRelation.GridRelationFieldsEnumerator Class
      • GridTemplateColumn Class
      • GridTemplateColumnEditor Class
      • GridTextBoxColumnEditor Class
      • GridTextButton Class
      • GridTextColumnEditor Class
      • GridTFoot Class
      • GridTHead Class
      • GridUpdatedEventArgs Class
      • GridValidationSettings Class
      • GroupItemCell Class
      • RadGrid Class
      • IGridColumnEditor Interface
      • IGridCommandEvent Interface
      • IGridEditableColumn Interface
      • IGridInsertItem Interface
      • GridAggregateFunction Enumeration
      • GridButtonColumnType Enumeration
      • GridChildLoadMode Enumeration
      • GridClientSettings.GridColumnsReorderMethod Enumeration
      • GridCommandItemDisplay Enumeration
      • GridDataSourcePersistenceMode Enumeration
      • GridEditFormType Enumeration
      • GridEditMode Enumeration
      • GridExpandColumnType Enumeration
      • GridFilterListOptions Enumeration
      • GridForceExtractValues Enumeration
      • GridGroupLoadMode Enumeration
      • GridGroupsChangingAction Enumeration
      • GridGroupSplitMode Enumeration
      • GridHeaderButtonType Enumeration
      • GridItemType Enumeration
      • GridKnownFunction Enumeration
      • GridPagerMode Enumeration
      • GridPagerPosition Enumeration
      • GridPaperSize Enumeration
      • GridRebindReason Enumeration
      • GridResetPageIndexAction Enumeration
      • GridSortOrder Enumeration
      • GridTableFrame Enumeration
      • GridTableLayout Enumeration
      • GridTableTextDirection Enumeration
  • Need for help
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Expression Property
See Also  Example
Telerik.WebControls Namespace > GridGroupsChangingEventArgs Class : Expression Property


Gets or sets the GridGroupByExpression that will be used for grouping Telerik RadGrid.   

 

Namespace: Telerik.WebControls
Assembly: RadGrid (in RadGrid.dll)

Syntax

Visual Basic (Declaration) 
Public Property Expression As GridGroupByExpression
Visual Basic (Usage)Copy Code
Dim instance As GridGroupsChangingEventArgs
Dim value As GridGroupByExpression
 
instance.Expression = value
 
value = instance.Expression
C# 
public GridGroupByExpression Expression {get; set;}

Example

C#Copy Code
protected void RadGrid1_GroupsChanging(object source, Telerik.WebControls.GridGroupsChangingEventArgs e)
{  
 if (e.Action == GridGroupsChangingAction.Group)
 {
  GridGroupByField countryGroupField = new GridGroupByField();
  countryGroupField.FieldName = "Country";
  GridGroupByField cityGroupField = new GridGroupByField();
  cityGroupField.FieldName = "City";
 
  e.Expression.SelectFields.Clear();
  e.Expression.SelectFields.Add(countryGroupField);
  e.Expression.SelectFields.Add(cityGroupField);
  
  e.Expression.GroupByFields.Clear();
  e.Expression.GroupByFields.Add(countryGroupField);
  e.Expression.GroupByFields.Add(cityGroupField);
  ...
 }
}
    
Visual BasicCopy Code
Protected Sub RadGrid1_GroupsChanging(ByVal source As Object, ByVal e As Telerik.WebControls.GridGroupsChangingEventArgs)
 'Expression is added (by drag/grop on group panel)
  If (e.Action = GridGroupsChangingAction.Group) Then
   Dim countryGroupField As GridGroupByField = New GridGroupByField
   countryGroupField.FieldName = "Country"
   Dim cityGroupField As GridGroupByField = New GridGroupByField
   cityGroupField.FieldName = "City"
   e.Expression.SelectFields.Clear
   e.Expression.SelectFields.Add(countryGroupField)
   e.Expression.SelectFields.Add(cityGroupField)
   e.Expression.GroupByFields.Clear
   e.Expression.GroupByFields.Add(countryGroupField)
   e.Expression.GroupByFields.Add(cityGroupField)
  End If
End Sub
C#Copy Code
protected void RadGrid1_GroupsChanging(object source, Telerik.WebControls.GridGroupsChangingEventArgs e)
{  
 if (e.Action == GridGroupsChangingAction.Group)
 {
  GridGroupByField countryGroupField = new GridGroupByField();
  countryGroupField.FieldName = "Country";
  GridGroupByField cityGroupField = new GridGroupByField();
  cityGroupField.FieldName = "City";
 
  e.Expression.SelectFields.Clear();
  e.Expression.SelectFields.Add(countryGroupField);
  e.Expression.SelectFields.Add(cityGroupField);
  
  e.Expression.GroupByFields.Clear();
  e.Expression.GroupByFields.Add(countryGroupField);
  e.Expression.GroupByFields.Add(cityGroupField);
  ...
 }
}
    
Visual BasicCopy Code
Protected Sub RadGrid1_GroupsChanging(ByVal source As Object, ByVal e As Telerik.WebControls.GridGroupsChangingEventArgs)
 'Expression is added (by drag/grop on group panel)
  If (e.Action = GridGroupsChangingAction.Group) Then
   Dim countryGroupField As GridGroupByField = New GridGroupByField
   countryGroupField.FieldName = "Country"
   Dim cityGroupField As GridGroupByField = New GridGroupByField
   cityGroupField.FieldName = "City"
   e.Expression.SelectFields.Clear
   e.Expression.SelectFields.Add(countryGroupField)
   e.Expression.SelectFields.Add(cityGroupField)
   e.Expression.GroupByFields.Clear
   e.Expression.GroupByFields.Add(countryGroupField)
   e.Expression.GroupByFields.Add(cityGroupField)
  End If
End Sub

Requirements

Platforms: Windows 2000, Windows XP Professional, Windows Server 2003 family

See Also