DataTable.NewRow DataTable.NewRow DataTable.NewRow DataTable.NewRow Method

Definizione

Crea un nuovo oggetto DataRow con lo stesso schema della tabella.Creates a new DataRow with the same schema as the table.

public:
 System::Data::DataRow ^ NewRow();
public System.Data.DataRow NewRow ();
member this.NewRow : unit -> System.Data.DataRow
Public Function NewRow () As DataRow

Restituisce

Oggetto DataRow con lo stesso schema dell'oggetto DataTable.A DataRow with the same schema as the DataTable.

Esempi

L'esempio seguente crea una DataTable, aggiunge due DataColumn gli oggetti che regolano lo schema della tabella e vengono creati diversi nuovi DataRow degli oggetti mediante il NewRow (metodo).The following example creates a DataTable, adds two DataColumn objects that determine the table's schema, and creates several new DataRow objects using the NewRow method. Quelli DataRow vengono quindi aggiunti oggetti il DataRowCollection usando il Add (metodo).Those DataRow objects are then added to the DataRowCollection using the Add method.

private void MakeDataTableAndDisplay()
{
    // Create new DataTable and DataSource objects.
    DataTable table = new DataTable();

    // Declare DataColumn and DataRow variables.
    DataColumn column;
    DataRow row; 
    DataView view;

    // Create new DataColumn, set DataType, ColumnName and add to DataTable.    
    column = new DataColumn();
    column.DataType = System.Type.GetType("System.Int32");
    column.ColumnName = "id";
    table.Columns.Add(column);

    // Create second column.
    column = new DataColumn();
    column.DataType = Type.GetType("System.String");
    column.ColumnName = "item";
    table.Columns.Add(column);

    // Create new DataRow objects and add to DataTable.    
    for(int i = 0; i < 10; i++)
    {
        row = table.NewRow();
        row["id"] = i;
        row["item"] = "item " + i.ToString();
        table.Rows.Add(row);
    }

    // Create a DataView using the DataTable.
    view = new DataView(table);

    // Set a DataGrid control's DataSource to the DataView.
    dataGrid1.DataSource = view;
}
Private Sub MakeDataTableAndDisplay()
    ' Create new DataTable and DataSource objects.
    Dim table As DataTable = New DataTable()

    ' Declare DataColumn and DataRow variables.
    Dim column As DataColumn 
    Dim row As DataRow 
    Dim view As DataView 

    ' Create new DataColumn, set DataType, ColumnName and add to DataTable.    
    column = New DataColumn()
    column.DataType = System.Type.GetType("System.Int32")
    column.ColumnName = "id"
    table.Columns.Add(column)
 
    ' Create second column.
    column = New DataColumn()
    column.DataType = Type.GetType("System.String")
    column.ColumnName = "item"
    table.Columns.Add(column)
 
    ' Create new DataRow objects and add to DataTable.    
    Dim i As Integer
    For i = 0 to 9 
       row = table.NewRow()
       row("id") = i
       row("item") = "item " & i
       table.Rows.Add(row)
    Next
    ' Create a DataView using the DataTable.
    view = New DataView(table)

    ' Set a DataGrid control's DataSource to the DataView.
    DataGrid1.DataSource = view
End Sub

Commenti

È necessario usare il NewRow metodo per creare nuove DataRow gli oggetti con lo stesso schema di DataTable.You must use the NewRow method to create new DataRow objects with the same schema as the DataTable. Dopo aver creato un DataRow, è possibile aggiungerlo al DataRowCollection, tramite il DataTable dell'oggetto Rows proprietà.After creating a DataRow, you can add it to the DataRowCollection, through the DataTable object's Rows property. Quando si usa NewRow per creare nuove righe, le righe devono essere aggiunto o eliminate dalla tabella di dati prima di chiamare Clear.When you use NewRow to create new rows, the rows must be added to or deleted from the data table before you call Clear.

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