使用 VB.Net 在 Datagridview 中导入 Excel 数据

Question

大家好，下午好。我在 VB.Net 中有一个程序，可以将 Datagridview 中的数据导出到这样的 Excel 文件中

导出后，我将编辑 Excel 文件并将其返回到我的 Datagridview 但很遗憾这是我的输出

正如您在两张图片上看到的那样，它们是不同的。没有逗号，没有小数位和0 列Total 也被添加，但假设不是。

我的问题是如何在 excel 中实现相同的格式？将逗号和小数点放在数字列中，并且不要将具有0 或0.00 的行包含在Total 列中

我想要的只是我的 Datagridview 数据也与 Excel 中的格式相同。

这是我在 Import 中的代码

 Dim conn As OleDbConnection

        Dim dta As OleDbDataAdapter

        Dim dts As DataSet
        Dim excel As String
        Dim OpenFileDialog As New OpenFileDialog

        OpenFileDialog.InitialDirectory = My.Computer.FileSystem.SpecialDirectories.MyDocuments
        OpenFileDialog.Filter = "All Files (*.*)|*.*|Excel files (*.xlsx)|*.xlsx|CSV Files (*.csv)|*.csv|XLS Files (*.xls)|*xls"

        If (OpenFileDialog.ShowDialog(Me) = System.Windows.Forms.DialogResult.OK) Then

            Dim fi As New FileInfo(OpenFileDialog.FileName)
            Dim FileName As String = OpenFileDialog.FileName

            excel = fi.FullName
            conn = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excel + ";Extended Properties=Excel 12.0;")
            dta = New OleDbDataAdapter("Select * From [Sheet1$]", conn)
            dts = New DataSet
            dta.Fill(dts, "[Sheet1$]")
            DataGridView1.DataSource = dts
            DataGridView1.DataMember = "[Sheet1$]"
            conn.Close()

            With DataGridView1
                .RowHeadersVisible = False
                .Columns(0).HeaderCell.Value = "Item Code"
                .Columns(1).HeaderCell.Value = "Description"
                .Columns(2).HeaderCell.Value = "Delivery Date"
                .Columns(3).HeaderCell.Value = "Stock On-Hand"
                .Columns(4).HeaderCell.Value = "Ordering Level"
                .Columns(5).HeaderCell.Value = "Order Qty"
                .Columns(6).HeaderCell.Value = "Approved Qty"
                .Columns(7).HeaderCell.Value = "UOM"
                .Columns(8).HeaderCell.Value = "Unit Price"
                .Columns(9).HeaderCell.Value = "Total"
                .Columns(10).HeaderCell.Value = "Remarks"
            End With
            DataGridView1.Columns.Item(0).Width = 70
            DataGridView1.Columns.Item(1).Width = 180
            DataGridView1.Columns.Item(2).Width = 70
            DataGridView1.Columns.Item(3).Width = 70
            DataGridView1.Columns.Item(4).Width = 70
            DataGridView1.Columns.Item(5).Width = 70
            DataGridView1.Columns.Item(6).Width = 70
            DataGridView1.Columns.Item(7).Width = 61
            DataGridView1.Columns.Item(8).Width = 76
            DataGridView1.Columns.Item(9).Width = 86
            DataGridView1.Columns.Item(10).Width = 125
            DataGridView1.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter
            For Each row As DataGridViewRow In DataGridView1.Rows
                row.Cells("Total").Value = row.Cells("Order Qty").Value * row.Cells("Unit Price").Value
            Next

            Dim total As Double = 0
            For i As Integer = 0 To DataGridView1.RowCount - 1
                total += DataGridView1.Rows(i).Cells(9).Value

            Next
            TextBox7.Text = total


            addnewnewandrefresh()
            DELETEROW()



        Else

            Dim con1 As MySqlConnection = New MySqlConnection("server=localhost;userid=root;password=admin1950;database=inventory")
            Dim sql1 As MySqlCommand = New MySqlCommand("select ItemCode,Description,DeliveryDate,StockOnHand,OrderingLevel,OrderQty,ApprovedQty,UoM,UnitPrice,Total,Remarks from final_purch where PRNumber = '" & TextBox1.Text & "';", con1)
            Dim ds1 As DataSet = New DataSet
            Dim adapter1 As MySqlDataAdapter = New MySqlDataAdapter
            con1.Open()
            adapter1.SelectCommand = sql1
            adapter1.Fill(ds1, "MyTable")
            DataGridView1.DataSource = ds1.Tables(0)
            con1.Close()
            With DataGridView1
                .RowHeadersVisible = False
                .Columns(0).HeaderCell.Value = "Item Code"
                .Columns(1).HeaderCell.Value = "Description"
                .Columns(2).HeaderCell.Value = "Delivery Date"
                .Columns(3).HeaderCell.Value = "Stock On-Hand"
                .Columns(4).HeaderCell.Value = "Ordering Level"
                .Columns(5).HeaderCell.Value = "Order Qty"
                .Columns(6).HeaderCell.Value = "Approved Qty"
                .Columns(7).HeaderCell.Value = "UOM"
                .Columns(8).HeaderCell.Value = "Unit Price"
                .Columns(9).HeaderCell.Value = "Total"
                .Columns(10).HeaderCell.Value = "Remarks"
            End With
            DataGridView1.Columns.Item(0).Width = 70
            DataGridView1.Columns.Item(1).Width = 180
            DataGridView1.Columns.Item(2).Width = 70
            DataGridView1.Columns.Item(3).Width = 70
            DataGridView1.Columns.Item(4).Width = 70
            DataGridView1.Columns.Item(5).Width = 70
            DataGridView1.Columns.Item(6).Width = 70
            DataGridView1.Columns.Item(7).Width = 61
            DataGridView1.Columns.Item(8).Width = 76
            DataGridView1.Columns.Item(9).Width = 86
            DataGridView1.Columns.Item(10).Width = 125
            DataGridView1.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter
            With Me.DataGridView1
                .RowsDefaultCellStyle.BackColor = Color.WhiteSmoke
                .AlternatingRowsDefaultCellStyle.BackColor = Color.Lavender
            End With


            MsgBox("Importing Data has been Cancelled")


        End If

TYSM 未来的帮助

Answer 1

试试这个：

首先导入时，我看到您正在创建列名。没有必要这样做。在扩展属性中设置 DHR=Yes。这将采用来自 excel 的列名。还有：

使用 IMEX=1 来避免崩溃。

始终使用 IMEX=1 是检索混合数据列数据的一种更安全的方法。考虑这样一种情况：一个 Excel 文件可能工作正常，导致该文件的数据导致驱动程序猜测一种数据类型，而另一个包含其他数据的文件导致驱动程序猜测另一种数据类型。这可能会导致您的应用程序崩溃，尤其是在您编辑 Excel 文件时。

";Extended Properties='Excel 12.0;HDR=YES;IMEX=1';

Answer 2

您需要使用单元格格式数字 示例：defaultcellstyle.format="N2"