当一个项目已经在DataGridView
中,然后当再次输入同一项目时,数量和总数不会增加或添加。它只会列出相同的项目。如何在DataGridView中的现有项目中添加数量 - vb.net
例如
Item Code ProductName Unit Item Description Price Quantity Total Discount
06-098 Biogesic 500mg Paracetamol 5.50 1 5.50 0.00
它TextBox
输入条形码,它会在DataGridView
列表中的项目。
这里是我的代码:
Private Sub txtbxBarcode_TextChanged(sender As Object, e As EventArgs) Handles txtbxBarcode.TextChanged
GetProductInfo()
End Sub
Private Sub GetProductInfo()
Dim discountAmount As Double
Dim medicineName, unit As String
Try
SQL = "SELECT product_code, Medicine_name, Unit, Description, Price, medicineID FROM medicine_info WHERE barcode = '" & txtbxBarcode.Text & "'"
ConnDB()
cmd = New MySqlCommand(SQL, conn)
dr = cmd.ExecuteReader
If dr.Read = True Then
txtbxItemCode.Text = dr("product_code")
unit = dr("Unit")
medicineName = dr("Medicine_name")
txtbxItemDesc.Text = dr("Description")
'Validate Discount
If isDiscount = True Then
discountAmount = Val(dr("Price")) * (Val(discountPercent)/100)
txtbxPrice.Text = Format(Val(dr("Price")) - discountAmount, "#,##0.00")
Else
txtbxPrice.Text = Format(dr("Price"), "#,##0.00")
discountAmount = 0
End If
'Validate Quantity
If isQuantity = True Then
txtbxQuantity.Text = noOfItems
Else
txtbxQuantity.Text = 1
End If
txtbxTotal.Text = Format(Val(txtbxPrice.Text.Replace(",", "")) * Val(txtbxQuantity.Text), "#,##0.00")
'Adding Item to Gridview to Display
dgv.Rows.Add(dr("medicineID"), dr("product_code"), dr("Medicine_name"), dr("Unit"), dr("Description"), txtbxPrice.Text, txtbxQuantity.Text, txtbxTotal.Text, Format(discountAmount * Val(txtbxQuantity.Text), "#,##0.00"))
'Get Basket Info
BasketInformation()
'Clear Barcode text field
txtbxBarcode.Clear()
'Set Discount to Zero
discountPercent = 0
isDiscount = False
'Set Quantity to False
isQuantity = False
noOfItems = 1
End If
Catch ex As Exception
MsgBox(ex.ToString)
Finally
cmd.Dispose()
conn.Close()
End Try
End Sub
欢迎来到Stack Overflow。你可以改善你的问题。请阅读[最小,完整和可验证示例](http://stackoverflow.com/help/mcve)。当你的代码没有任何额外的东西显示你的确切问题时,你会向志愿帮助你的人表示敬意。 – zhon
你可以帮助我们通过格式化来帮助你,所以我们没有滚动它。 – zhon
您应该添加/更新datagridview的基础数据源,而不是datagridview本身 –