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
    - Overview
    - Members
    - RadGrid Constructor
    - Methods
    - Properties
    - Fields
    - Events
  - 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
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Columns Property
See Also Example

Telerik.WebControls Namespace > RadGrid Class : Columns Property

Visual Basic (Declaration)
Visual Basic (Usage)
C#

Gets a collection (GridColumnCollection) of all columns in Telerik RadGrid.

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

Syntax

Visual Basic (Declaration)
Public Overridable ReadOnly Property Columns As GridColumnCollection

Visual Basic (Usage)	Copy Code
`Dim instance As RadGrid Dim value As GridColumnCollection value = instance.Columns`

C#
public virtual GridColumnCollection Columns {get;}

Return Value

returns a GridColumnCollection of all grid columns.

Example

The example below demonstrates how to use the columns collection to define columns declaratively (in the ASPX)

	<
	rad:RadGrid ID="RadGrid1" DataSourceID="AccessDataSource1" AllowPaging="True" ShowFooter="True"
runat="server" AutoGenerateColumns="False" AllowSorting="True" PageSize="3" Width="925px"
GridLines="None" CellPadding="0" Skin="Default" AllowMultiRowSelection="true">
<MasterTableView ShowFooter="True">
<RowIndicatorColumn Visible="False" UniqueName="RowIndicator">
<HeaderStyle Width="20px"></
	HeaderStyle>
</RowIndicatorColumn
	>
<Columns
	>
<rad:GridEditCommandColumn FooterText="EditCommand footer" UniqueName="EditCommandColumn"
HeaderText="Edit Command Column">
</rad:GridEditCommandColumn
	>
<rad:GridClientSelectColumn UniqueName="CheckboxSelectColumn" HeaderText="CheckboxSelect column <br
	/>" />
<rad:GridBoundColumn FooterText="BoundColumn footer" UniqueName="CustomerID" SortExpression="CustomerID"
HeaderText="Bound<br/
	>Column" DataField="CustomerID">
</rad:GridBoundColumn
	>
<rad:GridCheckBoxColumn FooterText="CheckBoxColumn footer" UniqueName="Bool" HeaderText="CheckBox<
	br/>Column"
DataField="Bool">
</rad:GridCheckBoxColumn
	>
<rad:GridDropDownColumn FooterText="DropDownColumn footer" UniqueName="DropDownListColumn"
ListTextField="ContactName" ListValueField="CustomerID" DataSourceID="AccessDataSource2"
HeaderText="DropDown<
	br/>Column" DataField="CustomerID">
</rad:GridDropDownColumn
	>
<rad:GridButtonColumn FooterText="PushButtonColumn<
	br/>footer" DataTextFormatString="Select {0}"
ButtonType="PushButton" UniqueName="column" HeaderText="PushButton<
	br/>Column"
CommandName="Select" DataTextField="CustomerID">
</rad:GridButtonColumn
	>
<rad:GridButtonColumn FooterText="LinkButtonColumn footer" DataTextFormatString="Remove selection"
UniqueName="column1" HeaderText="LinkButton<
	br/>Column" CommandName="Deselect"
DataTextField="CustomerID">
</rad:GridButtonColumn
	>
<rad:GridHyperLinkColumn FooterText="HyperLinkColumn footer" DataTextFormatString="Search Google for '{0}'"
DataNavigateUrlField="CompanyName" UniqueName="CompanyName" DataNavigateUrlFormatString="http://www.google.com/search?hl=en&q={0}&btnG=Google+Search"
HeaderText="HyperLink<
	br/>Column" DataTextField="CompanyName">
</rad:GridHyperLinkColumn
	>
<rad:GridTemplateColumn UniqueName="TemplateColumn" SortExpression="CompanyName">
<FooterTemplate
	>
<img src="Img/image.gif" alt="" style="vertical-align: middle" />
Template footer
</FooterTemplate
	>
<HeaderTemplate
	>
<table id="Table1" cellspacing="0" cellpadding="0" width="300" border="1">

RadGrid for ASP.NET

Syntax

Return Value

Example