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哪裏出錯。我在第二行發生了錯誤。錯誤是「從字符串轉換」更新bk_details設置totalcopie「到類型」Double「無效。」將字符串「update bk_details set totalcopie」轉換爲「Double」類型無效
Dim totalbook As Integer
totalbook = totalbook - 1
myConnection.Open()
myCommand = New SqlServerCe.SqlCeCommand("update bk_details set totalcopies = '" + totalbook + "' where bid like '" + TextBox1.Text + "'", myConnection)
myCommand.ExecuteNonQuery()
myConnection.Close()
totalcopies'後'取下單引號和嘗試。 –
@ shree.pat18: - 是的,我這樣做,但仍然是相同的錯誤。 – Datta