如何計算gridview行並顯示答案到文本框

Question

我想計算gridview行的值，並希望顯示在文本框中。 我有5行gridview，itemid，itemname，orderedqty，price，totalprice。當我點擊添加行時，我想計算總價格總額。想要顯示它到文本框。

我在想這是代碼，我認爲它不起作用。請幫我找到解決辦法。

Public Sub Calculate() 
    Dim Countrow As Integer = 1 
    Dim AmountTotal As Decimal = 0 

    For Each row As DataGridView In dgvPurchaseOrder.Rows 
     Countrow += 1 
     AmountTotal = dgvPurchaseOrder.Rows.Count.ToString() 
    Next 
    'GridView1.FooterRow.Cells(1).Text = "Total = " & AmountTotal.ToString() 
    txtGrossTotal.Text = AmountTotal.ToString() 
End Sub 

Answer 1

嘗試像這樣

Public Sub Calculate() 
     Dim Countrow As Integer = 1 
     Dim AmountTotal As Decimal = 0 

     For Each row As DataGridView In dgvPurchaseOrder.Rows 
      Countrow += 1 
      AmountTotal += row.Cells(4).Value // give correct price column index 
     Next 
       txtGrossTotal.Text = AmountTotal.ToString() 
    End Sub 

Answer 2

Public Sub Calculate() 
    Dim Countrow As Integer = 1 
    Dim AmountTotal As Decimal = 0 

    For Each row As DataGridViewRow In dgvPurchaseOrder.Rows 
     Countrow += 1 
     AmountTotal += row.Cells(4).Value 
    Next 
    txtGrossTotal.Text = AmountTotal.ToString() 
End Sub 

@equisde你是英雄，這是正確的密碼。