VB.Net 检查数据集是否有行

Question

 Private Function Gelobee() As DataSet
    Dim connection As OleDb.OleDbConnection = New OleDbConnection
    connection.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=CMP.accdb"
    connection.Open()
    Dim da As OleDb.OleDbDataAdapter = New OleDbDataAdapter("SELECT IDDesc FROM [ItemDesc] WHERE IDPartNo = '" & PartNoTxt.Text & "';", connection)
    Dim ds As New DataSet
    da.Fill(ds, "FilteredDesc")
    connection.Dispose()
    connection = Nothing
    If ds.Tables.Count > 0 Then
    If ds.Tables[0].Rows.Count > 0 Then
            DescTxt.Text = ds.Tables(0).Rows(0).Item(0)
        Else
            DescTxt.Text = "No Description"
        End If
    End If

    Return ds
End Function

嗨，我正在尝试检查数据集是否有行。但它在“ds.Tables[0].Rows.Count > 0”处给了我错误。我的代码有什么问题吗？我试图在整个网络上进行搜索，但似乎无法找到答案。

Answer 1

Access 索引器的 VB.NET 语法应该带括号...

If ds.Tables(0).Rows.Count > 0 Then