共用方式為

DataRow.RowState 屬性

  • 參考

定義

命名空間:
System.Data
組件:
System.Data.Common.dll
組件:
System.Data.dll
組件:
netstandard.dll
來源:
DataRow.cs
來源:
DataRow.cs
來源:
DataRow.cs

取得關於資料列與 DataRowCollection 之關聯性 (Relationship) 的資料列目前狀態。

public:
 property System::Data::DataRowState RowState { System::Data::DataRowState get(); };
public System.Data.DataRowState RowState { get; }
member this.RowState : System.Data.DataRowState
Public ReadOnly Property RowState As DataRowState

屬性值

DataRowState

其中一個 DataRowState 值。

範例

下列範例會先使用一個資料列建立新的 DataTable ，然後建立單 DataRow一 。 DataRow建立、新增、修改和刪除時，會列印其 RowState 。

private void DemonstrateRowState()
{
    // Run a function to create a DataTable with one column.
    DataTable table = MakeTable();
    DataRow row;

    // Create a new DataRow.
    row = table.NewRow();
    // Detached row.
    Console.WriteLine("New Row " + row.RowState);

    table.Rows.Add(row);
    // New row.
    Console.WriteLine("AddRow " + row.RowState);

    table.AcceptChanges();
    // Unchanged row.
    Console.WriteLine("AcceptChanges " + row.RowState);

    row["FirstName"] = "Scott";
    // Modified row.
    Console.WriteLine("Modified " + row.RowState);

    row.Delete();
    // Deleted row.
    Console.WriteLine("Deleted " + row.RowState);
}

private DataTable MakeTable()
{
    // Make a simple table with one column.
    DataTable table = new DataTable("table");
    DataColumn dcFirstName = new DataColumn(
        "FirstName", Type.GetType("System.String"));
    table.Columns.Add(dcFirstName);
    return table;
}

Private Sub DemonstrateRowState()
    ' Run a function to create a DataTable with one column.
    Dim table As DataTable = MakeTable()
    Dim row As DataRow 
 
    ' Create a new DataRow.
    row = table.NewRow()
    ' Detached row.
    Console.WriteLine("New Row " & row.RowState)
 
    table.Rows.Add(row)
    ' New row.
    Console.WriteLine("AddRow " & row.RowState)
 
    table.AcceptChanges()
    ' Unchanged row.
    Console.WriteLine("AcceptChanges " & row.RowState)
 
    row("FirstName") = "Scott"
    ' Modified row.
    Console.WriteLine("Modified " & row.RowState)
 
    row.Delete()
    ' Deleted row.
    Console.WriteLine("Deleted " & row.RowState)
 End Sub
 
 Private Function MakeTable() As DataTable
    ' Make a simple table with one column.
    Dim table As New DataTable("table")
    Dim dcFirstName As New DataColumn( _
        "FirstName", Type.GetType("System.String"))
    table.Columns.Add(dcFirstName)
    MakeTable = table
 End Function

備註

的值 RowState 取決於兩個因素：已在資料列上執行作業類型，以及是否已 AcceptChanges 在 上 DataRow呼叫 。

適用於

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