FillDataSet未聲明msg

Question

Public Function GetCategories() As DataSet 

    Dim query As String = "SELECT * FROM Categories" 
    Dim cmd As New OleDbCommand(query) 
    Return FillDataSet(cmd, "Categories") 

End Function 

Answer 1

假定您沒有實際定義FillDataSet方法。

我想你可能打算使用SqlDataAdapter的Fill方法。你可以在這裏看到一個完整的例子：Direct method from SQL command text to DataSet