Data Columns
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Data Columns are used to display and edit data. ASPxGridView supports both bound and unbound data columns.
- Bound data columns display fields in ASPxGridView‘s data source. Their GridViewDataColumn.FieldName properties refer to valid fields in a data source.
- Unbound columns are not bound to any field in a data source. These columns must be populated manually. See the following help topic for more information: Unbound Columns.
There are fifteen types of server data columns.
| Class Name | Description |
|---|---|
| GridViewDataBinaryImageColumn | A data column used to display images from a binary stream. |
| GridViewDataButtonEditColumn | A data column with a button editor. |
| GridViewDataCheckColumn | A data column used to display and edit data from a Boolean data field. |
| GridViewDataColorEditColumn | Represents a data column used to display and edit color values. |
| GridViewDataComboBoxColumn | A data column whose values are edited using a combo box editor. |
| GridViewDataDateColumn | A data column used to display and edit data from a DateTime data field. |
| GridViewDataDropDownEditColumn | Represents a data column with an editor containing a customizable dropdown window. |
| GridViewDataHyperLinkColumn | A data column with hyperlink functionality. |
| GridViewDataImageColumn | A data column used to display images from specified URLs. |
| GridViewDataMemoColumn | A data column used to display and edit memo data. |
| GridViewDataProgressBarColumn | A data column with Progress Bar editors. |
| GridViewDataSpinEditColumn | A data column used to display and edit numeric data. |
| GridViewDataTextColumn | A data column used to display and edit text. |
| GridViewDataTimeEditColumn | A data column that displays DateTime values. |
| GridViewDataTokenBoxColumn | A data column with the token box editor. |
On the client side, data columns are instances of the ASPxClientGridViewColumn objects.
Behavior
Data columns use various editors based on the data type. For example, columns with Boolean values use a check box editor, while columns with DateTime values use a DateTime editor. Use the GridViewEditDataColumn.PropertiesEdit property to access and customize the column editor’s settings.
Data columns have a set of Boolean properties that enable you to specify which elements of a column’s functionality (for example, sort, group) are available to users. Use the GridViewDataColumn.Settings property to access these options.
Set a column’s GridViewDataColumn.ReadOnly property to true to make it read-only.
You can use the Properties[EditorType] object to configure a column’s editor and filter editor on a page and in the Customization Dialog. To get a column’s editor, use the GetEditor(column) method instead of the editor’s ClientInstanceName property, since all column editors have the same client instance name.
Visibility
Use a column’s WebColumnBase.Visible property to specify its visibility. To specify its position among other visible columns, use the WebColumnBase.VisibleIndex property.
The Customization Window allows users to hide and show columns.