用循环啊
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim count As Integer = Me.DataGridView1.Rows.Count
Dim sum As Double = 0
For i = 0 To count - 1
sum += Val(Me.DataGridView1.Item("Amount", i).Value)
Next
MsgBox("和是:" & sum)
End Sub
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