怎样在vb.net中将图片存入SQL Server 2000并能读出来使用?

王朝mssql·作者佚名  2008-05-31
窄屏简体版  字體: |||超大  

在数据库中建一个Img表,其中包含一个Img字段,类型为Image或Binary

'将Bytes存入数据库

Dim Stream As New IO.MemoryStream

PictureBox1.Image.Save(Stream, System.Drawing.Imaging.ImageFormat.Bmp)

Stream.Flush()

Dim Bytes As Byte() = Stream.ToArray

Dim SQL As String = "insert into Img values (@bytes) "

Dim command As New SqlClient.SqlCommand(SQL, Connection)

command.Parameters.Add("@bytes", SqlDbType.Binary).Value = Bytes

command.ExecuteNonQuery

'读取

Dim Command As New SqlClient.SqlCommand(SQL, Connection)

Dim Reader As SqlClient.SqlDataReader = Command.ExecuteReader()

Dim Bytes as Byte()=Reader.Item("Img")

Dim mStream As New IO.MemoryStream

mStream.Write(Bytes, 0, Bytes.Length)

mStream.Flush()

Dim Img As New Bitmap(mStream)

PictureBox1.Image = Img

 
 
 
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