Telerik.Web.UI.GridExpandColumn
This column appears when the grid has a hierarchical structure, to facilitate the expand/collapse functionality. The expand column is always placed in front of all other grid content columns and can not be moved.
Inheritance Hierarchy
- System.Object
- Telerik.Web.UI.GridColumn : IComparable, IStateManager
- Telerik.Web.UI.GridExpandColumn
Properties
AndCurrentFilterFunction GridKnownFunction
Gets or sets the current second filter condition function.
AndCurrentFilterValue String
Gets or sets a value of the currently applied second filter condition value.
AutoPostBackOnFilter Boolean
Gets or sets a value indicating whether the grid should automatically postback, when the value in the filter text-box changes, and the the focus moves to another element.
ButtonType GridExpandColumnType
Gets a Telerik.Web.UI.GridExpandColumnType value, indicating the type of the button. The button of the GridExpandColumn is by default of type SpriteButton.
CollapseImageUrl String
Gets or sets a string, specifying the URL to the image, which will be used instead of the default Collapse image for the GridGroupSplitterColumn (the minus sign).
ColumnType String
Gets the string representation of the type-name of this instance. The value is used by RadGrid to determine the type of the columns persisted into the ViewState, when recreating the grid after postback. The value is also used by the grid client-side object. This property is read only.
CommandName String
Gets or sets a string, representing the CommandName of the GridExpandColumn. The command name's default value is "ExpandCollapse". It can be used to determine the type of command in the ItemCommand event handler. function GridCreated() { }
CurrentFilterFunction GridKnownFunction
Gets or sets the current function used for filtering.
CurrentFilterValue String
Gets or sets a value of the currently applied filter.
DataType Type
Gets or sets (see the Remarks) the type of the data from the DataField as it was set in the DataSource.
Remarks
The DataType property supports the following base .NET Framework data types:BooleanByteCharDateTimeDecimalDoubleInt16Int32Int64SByteSingleStringTimeSpanUInt16UInt32UInt64
DataTypeName String
Gets the string representation of the DataType property of the column, needed for the client-side grid instance.
Display Boolean
Gets or sets a value indicating whether the cells corresponding to a column would be rendered with a 'display:none' style attribute (end-user-not-visible). To completely prevent cells from rendering, set the property to false, instead of the Display property.
EditFormColumnIndex Int32
Specifies the vertical collumn number where this column will appear when using EditForms editing mode and the form is autogenerated. See the remarks for details.
Remarks
A practicle example of using this property is to deterimine the number of columns rendered in the edit form. If there will be only one column in the rendered edit form, when we retrieve the value of this property for a column, as shown in the code below:protected void RadGrid1_PreRender(object sender, EventArgs e) {int columnIndex = RadGrid1.MasterTableView.Columns[3].EditFormColumnIndex; }it will be equal to 0, meaning the the column belongs to the first group of columns in the edit form.
EditFormHeaderTextFormat String
String that formats the HeaderText when the column is displayed in an edit form
EnableHeaderContextMenu Boolean
Determines if the header context menu will be displayed for the current column. This property works together with the EnableHeaderContextMenu property of the corresponding GridTableView. Default value is true.
ExpandImageUrl String
Gets or sets a string, specifying the URL to the image, which will be used instead of the default Expand image for the GridGroupSplitterColumn (the plus sign).
Exportable Boolean
Determines whether the given column will be shown in the exported file
FilterCheckListEnableLoadOnDemand Boolean
Get or Set if the Filter Check List will load data on demand from server.
FilterCheckListWebServiceMethod String
Get or Set the Methood from CheckListWebServicePath Web Service defined in the TableView, that to be used for getting data for the filter check list
FilterControlAltText String
Gets or Sets the text value which should be added to alt attribute of the filter control
FilterControlAltText String
Gets or Sets the text value which should be added to alt attribute of the filter control
FilterControlToolTip String
Gets or sets the filter control ToolTip property value.
FilterControlWidth Unit
Use this property to set width to the filtering control (depending on the column type, this may be a normal textbox, RadNumericTextBox, RadDatePicker, etc.)
FilterDelay Nullable
1`
Gets or sets the filter delay which determines after how many milliseconds a filtering will occur after a filter value have changed.
FilterImageToolTip String
Gets or sets the filter image tool tip.
FilterImageUrl String
Gets or sets a string representing the URL to the image used in the filtering box.
FilterListOptions GridFilterListOptions
Gets or sets the value indincating which of the filter functions should be available for that column. For more information see enumaration.
FilterTemplate ITemplate
Gets or sets the template, which will be rendered in the filter item cell of the column.
FooterStyle TableItemStyle
Style of the cell in the footer item of the grid, corresponding to the column.
FooterText String
Use the FooterText property to specify your own or determine the current text for the footer section of the column.
Groupable Boolean
Gets a Boolean value indicating whether the GridGroupSplitterColumn is groupable. This value is always false.
Groupable Boolean
Gets or sets a value indicating whether you will be able to group Telerik RadGrid by that column. By default this property is true.
Remarks
See Telerik RadGrid manual for details about using grouping. If Groupable is false the column header cannot be dragged to the GroupPanel.
GroupByExpression String
The group-expression that should be used when grid is grouping-by this column. If not set explicitly, RadGrid will generate a group expression based on the DataField of the column (if available), using the method.The grouping can be turned on/off for columns like GridBoundColumn using property.For more information about the Group-By expressions and their syntax, see class.
HeaderAbbr String
Gets or sets the column cell 'abbr' attribute.
HeaderAxis String
Gets or sets the column cell 'axis' attribute.
HeaderButtonType GridHeaderButtonType
Gets or sets the button type of the button rendered in the header item, used for sorting. The possible values that this property accepts are:Telerik.Web.UI.GridHeaderButtonType.LinkButton Telerik.Web.UI.GridHeaderButtonType.PushButton Telerik.Web.UI.GridHeaderButtonType.TextButton
HeaderImageUrl String
Gets or sets the URL of an image in the cell in the header item of the grid current column. You can use a relative or an absolute URL.
HeaderStyle TableItemStyle
Style of the cell in the header item of the grid, corresponding to the column.
HeaderText String
Use the HeaderText property to specify your own or determine the current text for the header section of the column.
HeaderTooltip String
Gets or sets the header tooltip of the column.
IsEditable Boolean
This property is supposed for developers of new grid columns. It gets whether a column is currently ReadOnly. The ReadOnly property determines whether a column will be editable in edit mode. A column for which the ReadOnly property is true will not be present in the automatically generated edit form.
ItemStyle TableItemStyle
Style of the cells, corresponding to the column.
ListOfFilterValues String[]
Access the valus passed from the ListBox used for CheckList in the filter.
OrderIndex Int32
Gets or sets the order index of column in the collection of . Use method for reordering the columns.
Remarks
We recommend using this property only for getting the order index for a specific column instead of setting it. Use method for reordering columns. Note that changing the column order index will change the order of the cells in the grid items, after the grid is rebound. The value of the property would not affect the order of the column in the collection.
Owner GridTableView
Gets the instance of the GridTableVeiw wich owns this column instance.
OwnerGridID GridTableView
Gets the value of the ClientID property of the RadGrid instance that owns this column. This property value is used by grid's client object
OwnerID GridTableView
Gets the value of the ClientID property of the GridTableView that owns this column. This property value is used by grid's client object
Reorderable Boolean
Gets a Boolean value, indicating whether the GridExpandColumn is reorderable. This value is always false, due to the specificity of the column, which should always be positioned first.
Reorderable Boolean
Gets or sets a value indicating whether the column can be reordered client-side.
Resizable Boolean
Gets a Boolean value, indicating whether the GridExpandColumn is resizable. This value is always false, due to the specificity of the column, which should always be positioned first.
Resizable Boolean
Gets or sets a value indicating whether the column can be resized client-side. You can use this property, by setting it to false, to disable resizing for a particular column, while preserving this functionality for all the other columns.
RowSpan Int32
For internal use. Gets or sets the row span of the grid column.
Selectable Boolean
Gets the value determining if the column is selectable.
Selectable Boolean
Gets the value determining if the column is selectable.
Selected Boolean
Indicates whether all column cells have been selected
ShowFilterIcon Boolean
Gets or sets if the filter icon in the will be visible.
ShowNoSortIcon Boolean
Get or Sets a value indicating whether a no sort icon should appear next to the header button, when a column is not sorted but can be sorted.
ShowSortIcon Boolean
Get or Sets a value indicating whether a sort icon should appear next to the header button, when a column is sorted.
Sortable Boolean
Should override if sorting will be disabled
SortAscImageUrl String
Gets or sets a string representing the URL to the image used for sorting in ascending mode.
SortDescImageUrl String
Gets or sets a string representing the URL to the image used for sorting in descending mode.
SortedBackColor Color
Gets or sets the color of a cell which is sorted.
SortExpression String
The string representing a filed-name from the DataSource that should be used when grid sorts by this column. For example: 'EmployeeName'
UniqueName String
Gets or sets a string, specifying the Unique name of the column. The default value is "ExpandColumn". function GridCreated() { }
UniqueName String
Each column in Telerik RadGrid has an UniqueName property (string). This property is assigned automatically by the designer (or the first time you want to access the columns if they are built dynamically).
Remarks
You can also set it explicitly, if you prefer. However, the automatic generation handles most of the cases. For example a GridBoundColumn with DataField 'ContactName' would generate an UniqueName of 'ContactName'.Additionally, there may be occasions when you will want to set the UniqueName explicitly. You can do so simply by specifying the custom name that you want to choose:<radG:GridTemplateColumn UniqueName="ColumnUniqueName"></radG:GridTemplateColumn>
Visible Boolean
Gets a Boolean value, indicating whether the GridExpandColumn is visible. This value is always false, due to the specificity of the column.
Visible Boolean
Gets or sets a value indicating if the column and all corresponding cells would be rendered.
Methods
Clone
Creates a copy of the current column.
Remarks
Note: When implementing/overriding this method be sure to call the base member or call CopyBaseProperties to be sure that all base properties will be copied accordingly
Returns
Telerik.Web.UI.GridColumn
Clone
Creates a copy of the current column.
Remarks
Note: When implementing/overriding this method be sure to call the base member or call CopyBaseProperties to be sure that all base properties will be copied accordingly
Returns
Telerik.Web.UI.GridColumn
EvaluateFilterExpression
Gets a string representing a filter expression, based on the settings of all columns that support filtering, with a syntax ready to be used by a DataView object
Returns
System.String
EvaluateFilterExpression
Evaluates the column filter expression based on the , , , propeties. It could be used to handle custom filtering and is internally used for determining FilterExpression value.
Returns
System.String
GetCurrentFilterValueFromControl
Gets the value of the Text property of a textbox control found in the cell, used to set the value of the CurrentFilterValue property.
Parameters
cell System.Web.UI.WebControls.TableCell
Returns
System.String
GetCustomPropertyDataFields
This method should be used in case you develop your own column. It returns the full list of DataFields used by the column. GridTableView uses this to decide which DataFields from the specified DataSource will be inlcuded in case of GridTableView.RetrieveAllDataFields is set to false.
Returns
System.Collections.IDictionary
GetDefaultGroupByExpression
Calculate the default Group-by expression based on the settings of the DataField (if available)
Remarks
For example, if a column's DataField is ProductType the default group-by expression will be: 'ProductType Group By ProductType'
Returns
System.String
GetFilterFunctionsList
Gets a list of filter functions based on the settings of the property.
Parameters
options Telerik.Web.UI.GridFilterListOptions
sourceList System.Collections.ArrayList
Returns
System.Collections.ArrayList
GetSortExpression
By default returns the SortExpression of the column. If the SortExpression is not set explicitly, it would be calculated, based on the DataField of the column.
Returns
System.String
Initialize
The Initialize method is inherited by a derived GridColumn class. Is is used to reset a column of the derived type.
Remarks
This method is mainly used to reset properties common for all column types derived from GridColumn class.The Initialize method is usually called during data-binding, prior to the first row being bound.
Returns
System.Void
InitializeCell
After a call to this method the column should add the corresponding controls (text, labels, input controls) into the cell given, regarding the inItem type and column index.Note: This method is called within RadGrid and is not intended to be used directly from your code.
Returns
System.Void
IsBoundToFieldName
This method returns true if the column is bound to the specified field name.
Parameters
name System.String
The name of the DataField, which will be checked.
Returns
System.Boolean
PrepareCell
Prepares the cell of the item given, when grid is rendered.
Parameters
cell System.Web.UI.WebControls.TableCell
item Telerik.Web.UI.GridItem
Returns
System.Void
RefreshCurrentFilterValue
Modifies the CurrentFilterFunction and CurrentFilterValue properties according to the function given and the corresponding filter text-box control in the filtering item.
Returns
System.Void
RefreshCurrentFilterValue
Modifies the CurrentFilterValue property according to the corresponding selected item in the filter text-box control in the filtering item.
Returns
System.Void
ResetCurrentFilterValue
Resets the values of the and properties to their defaults.
Returns
System.Void
ResetCurrentFilterValue
Resets the values of the , , and properties to their defaults.
Returns
System.Void
SetCurrentFilterValueToControl
Sets the value of the property CurrentFilterValue as a text on the TextBox control found in the cell
Parameters
cell System.Web.UI.WebControls.TableCell
Returns
System.Void
SetupFilterControls
Instantiates the filter controls (text-box, image.) in the cell given
Parameters
cell System.Web.UI.WebControls.TableCell
Returns
System.Void
SupportsFiltering
This method should be used in case you develop your own column. It returns true if the column supports filtering.
Returns
System.Boolean