ReadOnlyTreeListColumnCollection<T>.Item[String] Property

Returns the column with the specified name, field name or caption.

Namespace: DevExpress.Web.ASPxTreeList

Assembly: DevExpress.Web.ASPxTreeList.v24.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

public T this[string key] { get; }

VB.NET

Public ReadOnly Property Item(key As String) As T

Parameters

Name	Type	Description
key	String	A String value that specifies the column’s name, field name or caption.

Property Value

Type	Description
T	A T object that is a column with the specified name, field name or caption. null (Nothing in Visual Basic) if the column isn’t found.

Remarks

The Item property allows you to obtain a column by specifying its name, field name or caption. If the column’s name property matches the ID_FieldName_Caption parameter, it is returned by the Item property.

If the column isn’t found, a search is performed for a data column whose TreeListDataColumn.FieldName property matches the search parameter. Since multiple columns can be bound to the same data source field, the first found column is returned.

Finally, if the column isn’t found, the Item property returns the first found column whose Caption property matches the search parameter. Otherwise, the Item property returns null.