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DataColumn.ReadOnly Property
.NET Framework (current version)
Gets or sets a value that indicates whether the column allows for changes as soon as a row has been added to the table.
Assembly: System.Data (in System.Data.dll)
Property Value
Type: System.Booleantrue if the column is read only; otherwise, false. The default is false.
| Exception | Condition |
|---|---|
| ArgumentException | The property is set to false on a computed column. |
The following example creates a DataColumn and sets its ReadOnly property true.
private void AddColumn(DataTable table) { // Add a DataColumn to the collection and set its properties. // The constructor sets the ColumnName of the column. DataColumn column = table.Columns.Add("Total"); column.DataType = System.Type.GetType("System.Decimal"); column.ReadOnly = true; column.Expression = "UnitPrice * Quantity"; column.Unique = false; }
.NET Framework
Available since 1.1
Available since 1.1
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