VB.NET显示ORACLE数据库BLOB类型图片

[bfly2000]

保存picturebox图像至ORACLE BLOB型字段没有问题：
Dim imgData(0) As Byte
Dim ms As New System.IO.MemoryStream
PictureBox1.Image.Save(ms, PictureBox1.Image.RawFormat)
ReDim imgData(ms.Length - 1)
ms.Read(imgData, 0, ms.Length)
ms.Close()

Dim strSQL As String
strSQL ="insert into member_photo(pernr,photo) values ('" & txtPERNR.Text & "',:photo)"
Dim sqlCom As New OracleCommand
sqlCom.CommandText = strSQL
sqlCom.Connection = Conn
sqlCom.Parameters.Add("photo", OracleType.Blob, imgData.Length)
sqlCom.Parameters(0).Value = imgData
sqlCom.ExecuteNonQuery()

但提取BLOB字段内容至PictureBox框报错：
Dim strSQL As String
strSQL = "select photo from member_photo where pernr='" & txtPERNR.Text & "'"
Dim cmd As OracleCommand = New OracleCommand(strSQL, Conn)
Dim dr As OracleDataReader = cmd.ExecuteReader()
If dr.Read() Then
Dim imgData() As Byte = dr.Item(0)
Dim ms As MemoryStream
ms = New MemoryStream(imgData)
Dim imageBlob As Image = Image.FromStream(ms)　' 这边报错：未处理ArgumentException 参数无效。
PictureBox1.Image = imageBlob
ms.Close()
Else
PictureBox1.Image = Nothing
End If

[bfly2000]

自己解决了，保存的时候有问题，用了下面的方法保存：
Dim imgData(0) as String
Dim imgPath As String
imgPath = OpenFileDialog1.FileName
Dim file As FileStream = New FileStream(imgPath, FileMode.Open, FileAccess.Read)

ReDim imgData(file.Length)
file.Read(imgData, 0, imgData.length)
file.Close()

[oyljerry]

以文件方式读取对应的二进制流等，然后再显示

[bw555]

不错，代码收藏了

[jamxie]

有用!好同志