DataColumn.ReadOnly Özellik

public:
 property bool ReadOnly { bool get(); void set(bool value); };

public bool ReadOnly { get; set; }

[System.Data.DataSysDescription("DataColumnReadOnlyDescr")]
public bool ReadOnly { get; set; }

member this.ReadOnly : bool with get, set

[<System.Data.DataSysDescription("DataColumnReadOnlyDescr")>]
member this.ReadOnly : bool with get, set

Public Property ReadOnly As Boolean

Özellik Değeri

true sütun salt okunursa; aksi takdirde , false. Varsayılan değer: false.

Öznitelikler

DataSysDescriptionAttribute

Özel durumlar

Örnekler

Aşağıdaki örnek bir DataColumn oluşturur ve özelliğini ReadOnlytrueayarlar.

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;
}

Private Sub AddColumn(ByVal table As DataTable)
    ' Add a DataColumn to the collection and set its properties.
    ' The constructor sets the ColumnName of the column.
    Dim column As DataColumn = table.Columns.Add("Total")
    column.DataType = System.Type.GetType("System.Decimal")
    column.ReadOnly = True
    column.Expression = "UnitPrice * Quantity"
    column.Unique = False
End Sub

Şunlara uygulanır

Ayrıca bkz.

• Unique
• AutoIncrement
• ADO.NET'de DataSet'leri kullanma