小编Mic*_*ael的帖子

我正在编写一个 VB 应用程序，需要在数据库中存储图像。用户在计算机上选择图像，这会以字符串形式提供路径。这是我的尝试，但是我收到错误“INSERT INTO 查询不能包含多值字段”。

这是我的代码：

Dim buff As Byte() = Nothing
Public Function ReadByteArrayFromFile(ByVal fileName As String) As Byte()
    Dim fs As New FileStream(fileName, FileMode.Open, FileAccess.Read)
    Dim br As New BinaryReader(fs)
    Dim numBytes As Long = New FileInfo(fileName).Length
    buff = br.ReadBytes(CInt(numBytes))
    Return buff
End Function

Sub ....
    Dim connImg As New OleDbConnection
    Dim sConnString As String
    Dim cmdImg As New OleDbCommand

    sConnString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & My.Settings.DB & ";Persist Security Info=False;"
    connImg = New OleDbConnection(sConnString)
    connImg.Open()
    cmdImg.Connection = connImg …