Question

我目前正在制作一个时间表程序，目前有一个DataGridView，用户可以在其中输入数据，并且应该能够保存该数据，这样当程序再次打开时，数据仍然存在。我尝试过很多选择，但似乎没什么用。我目前有这个代码：

        Try
        Me.Validate()
        Me.Daily_formatBindingSource.EndEdit()
        Me.Daily_formatTableAdapter.Update(Me.CalenderD1DataSet.Daily_format)
        MsgBox("Update successful")

    Catch ex As Exception
        MsgBox("Update failed")
    End Try

Answer 1

这是我的一个程序中的一段代码，它将数据从Datagridview保存到数据库中，您应该明白这一点：

 For i = 0 To DG_add_stock.Rows.Count - 1

     Dim stock_code As String = CStr(DG_add_stock.Rows(i).Cells("Code").Value)
     Dim stock_desc As String = CStr(DG_add_stock.Rows(i).Cells("Description").Value)
     Dim qty As String = CStr(DG_add_stock.Rows(i).Cells("Qty").Value)
     Dim price As String = CStr(DG_add_stock.Rows(i).Cells("Price").Value)
     Dim tax_rate As String = CStr(DG_add_stock.Rows(i).Cells("Tax_Rate").Value)
     Dim line_total As String = CStr(DG_add_stock.Rows(i).Cells("Line_Total").Value)

     ''' Save the data in a database or update existing data

 Next

然后显示数据：

DG_Maintenance_Stock.Rows.Clear()

''' Get the data from the database

For add_items = 0 To row_count - 1

    ''' Load values from each row

    DG_Maintenance_Stock.Rows.Add(code_list, desc_list, qty_list, tax_rate_list, price_list)

    DG_Maintenance_Stock.Sort(maintenance_stock_Code, System.ComponentModel.ListSortDirection.Ascending)

Next

如何从access（vb.net）保存到datagridview

1 个答案: