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DataColumn.ReadOnly Properti

Definisi

Mendapatkan atau mengatur nilai yang menunjukkan apakah kolom memungkinkan perubahan segera setelah baris ditambahkan ke tabel.

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

Nilai Properti

true jika kolom hanya dibaca; jika tidak, false. Default adalah false.

Atribut

Pengecualian

Properti diatur ke false pada kolom komputasi.

Contoh

Contoh berikut membuat DataColumn dan mengatur propertinya ReadOnlytrue.

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

Berlaku untuk

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