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 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

TreeListOptionsColumn.ReadOnly Property

Gets or sets whether end-users are prevented from editing the column's cell values.

Namespace:DevExpress.XtraTreeList.Columns
Assembly:DevExpress.XtraTreeList.v19.1.dll

Expanded Syntax

Property value

Type: Boolean
true if end-users are prevented from modifying the column's cell values; otherwise, false.
The default is false.

Expanded Remarks

If the ReadOnly property is set to true, the cell values of columns cannot be modified by end-users. In this case cell editors can be invoked but end-users can only select and copy an editor's content.

Cell values can still be modified in code using the TreeListNode.SetValue method despite the ReadOnly property's value.

Expanded Example

The following example creates a TreeList (see TreeList) at runtime and shows how to perform basic customization tasks:

  • Bind the treelist to a data source
  • Specify the key fields that form a hierarchy
  • Access automatically created columns
  • Set a custom row height
  • Customize column captions (using HTML tags) and cell appearance settings
  • Create unbound columns and create Excel-style format conditions based on these column values
  • Assign an in-place editor (a spin editor) to columns
  • Sort data
  • Calculate total summaries
  • Filter nodes
  • Hide columns and calculate column "best" widths
  • Locate and expand nodes
  • Focus a specific cell
  • Specify DataAnnotation attributes at the data source level (the "p0" display format for the MarketShare field)

Expanded See Also

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