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我正在使用这段代码:

Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
    Dim result = MessageBox.Show("Delete This Record?", "Confirm Action", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
    If result = DialogResult.Yes Then
        Dim sqldelete As String
        sqldelete = "DELETE * FROM [product info] WHERE Barcode='" & DataGridView1.CurrentRow.Cells(6).Value.ToString & "'"
        Dim adapter As New OleDbDataAdapter(sqldelete, strcon)
        Dim dt As New DataTable("[product info]")
        adapter.Fill(dt)
        DataGridView1.DataSource = dt

        RefreshDGV()
    End If

当我在 datagridview 中选择要删除的项目时,它会显示一条错误消息:

“没有为一个或多个必需参数提供值。”

我不熟悉这个错误,因为我的删除按钮代码以前可以工作。

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