c# - DataGrid ビューを DataSet/DataTable に変換する最良の方法

Question

DataSet、DataTableおよびlinq 式は、 a の共通DataSourceの値ですDataGridView。

逆に、DataGridViewレコードをDataSetorに渡す/バインドすることは可能DataTableですか?

ありがとう

Answer 1

あなたはこのようなことをすることができます：

var dataTable = new DataTable();

Array.ForEach(
    dataGridView1.Columns.Cast<DataGridViewColumn>().ToArray(), 
    arg => dataTable.Columns.Add(arg.HeaderText, arg.ValueType));
Array.ForEach(
    dataGridView1.Rows.Cast<DataGridViewRow>().ToArray(), 
    arg => dataTable.Rows.Add(arg.Cells.Cast<DataGridViewCell>().Select(cell => cell.Value)));

return dataTable;

Answer 2

これを試すことができます：

Public Shared Function DataGridViewToDataTable(ByVal dtg As DataGridView,
    Optional ByVal DataTableName As String = "myDataTable") As DataTable
    Try
        Dim dt As New DataTable(DataTableName)
        Dim row As DataRow
        Dim TotalDatagridviewColumns As Integer = dtg.ColumnCount - 1
        'Add Datacolumn
        For Each c As DataGridViewColumn In dtg.Columns
            Dim idColumn As DataColumn = New DataColumn()
            idColumn.ColumnName = c.Name
            dt.Columns.Add(idColumn)
        Next
        'Now Iterate thru Datagrid and create the data row
        For Each dr As DataGridViewRow In dtg.Rows
            'Iterate thru datagrid
            row = dt.NewRow 'Create new row
            'Iterate thru Column 1 up to the total number of datagrid columns
            For cn As Integer = 0 To TotalDatagridviewColumns
                row.Item(cn) = dr.Cells(cn).Value
            Next
            'Now add the row to Datarow Collection
            dt.Rows.Add(row)
        Next
        'Now return the data table
        Return dt
    Catch ex As Exception
        Return Nothing
    End Try
End Function

このサイトからの抜粋です: http://www.sourcehints.com/articles/how-to-convert-datagridview-data-to-datatable.html