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Data Columns

  • 3 minutes to read

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 Represents a data column used to display and edit time portions of 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.