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.v18.2.dll

Declaration

C#

[DefaultValue(false)]
[XtraSerializableProperty]
public virtual bool ReadOnly { get; set; }

VB.NET

<DefaultValue(False)>
<XtraSerializableProperty>
Public Overridable Property ReadOnly As Boolean

Property Value

Type	Default	Description
Boolean	**false**	true if end-users are prevented from modifying the column’s cell values; otherwise, false.

Property Paths

You can access this nested property as listed below:

Object Type	Path to ReadOnly
TreeListColumn	.OptionsColumn.ReadOnly

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 regardless of the ReadOnly property’s value.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the ReadOnly property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-display-bands-and-columns-in-the-same-tree-list-in-the-customization-form-e3723/CS/CustomDescendants/TreeListBandedCustomizationForm.cs#L35

newColumn.OptionsColumn.AllowEdit = false;
newColumn.OptionsColumn.ReadOnly = true;

spreadsheet-document-api-examples-part2/CS/SpreadsheetDocServerAPIPart2/Form1.cs#L106

col1.OptionsColumn.AllowMove = false;
col1.OptionsColumn.ReadOnly = true;
treeList.Columns.AddRange(new TreeListColumn[] { col1 });

spreadsheet-document-api-chart-examples/CS/SpreadsheetDocServerChartAPISamples/Form1.cs#L163

col1.OptionsColumn.AllowMove = false;
col1.OptionsColumn.ReadOnly = true;
treeList.Columns.AddRange(new TreeListColumn[] { col1 });

winforms-the-richeditcontrols-common-api-t210437/CS/RichEditAPISample/Form1.cs#L427

col1.OptionsColumn.AllowMove = false;
col1.OptionsColumn.ReadOnly = true;
treeList.Columns.AddRange(new TreeListColumn[] { col1 });

winforms-spreadsheet-pivot-table-api-t298650/CS/SpreadsheetPivotTableExamples/Form1.cs#L143

col1.OptionsColumn.AllowMove = false;
col1.OptionsColumn.ReadOnly = true;
treeList.Columns.AddRange(new TreeListColumn[] { col1 });

VB.NET

how-to-display-bands-and-columns-in-the-same-tree-list-in-the-customization-form-e3723/VB/CustomDescendants/TreeListBandedCustomizationForm.vb#L40

newColumn.OptionsColumn.AllowEdit = False
newColumn.OptionsColumn.ReadOnly = True

spreadsheet-document-api-examples-part2/VB/SpreadsheetDocServerAPIPart2/Form1.vb#L100

col1.OptionsColumn.AllowMove = False
col1.OptionsColumn.ReadOnly = True
treeList.Columns.AddRange(New TreeListColumn() { col1 })

spreadsheet-document-api-chart-examples/VB/SpreadsheetDocServerChartAPISamples/Form1.vb#L155

col1.OptionsColumn.AllowMove = False
col1.OptionsColumn.ReadOnly = True
treeList.Columns.AddRange(New TreeListColumn() { col1 })

winforms-the-richeditcontrols-common-api-t210437/VB/RichEditAPISample/Form1.vb#L419

col1.OptionsColumn.AllowMove = False
col1.OptionsColumn.ReadOnly = True
treeList.Columns.AddRange(New TreeListColumn() {col1})

winforms-spreadsheet-pivot-table-api-t298650/VB/SpreadsheetPivotTableExamples/Form1.vb#L137

col1.OptionsColumn.AllowMove = False
col1.OptionsColumn.ReadOnly = True
treeList.Columns.AddRange(New TreeListColumn() { col1 })