#Region " Web Form Designer Generated Code "

'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.SqlConn = New System.Data.SqlClient.SqlConnection()
Me.SqlComm = New System.Data.SqlClient.SqlCommand()

End Sub

Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
Form Designer
InitializeComponent()
End Sub

#End Region

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub

Private Sub cmdupload_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdupload.Click
Dim image As System.Drawing.Image, newimage As System.Drawing.Image
Dim callb As System.Drawing.Image.GetThumbnailImageAbort
Dim f As System.IO.File, fs As System.IO.FileStream
Dim temppath As String
Dim bigdata As Byte(), smalldata As Byte() '大图片数据、小图片数据
Dim pic As System.Data.SqlClient.SqlParameter, picsmall As System.Data.SqlClient.SqlParameter
'检察上传文件是否合标准,check函数是我根据网站需要写的了
If check(File1.PostedFile.FileName) <> "ok" Then
Response.Write(check(File1.PostedFile.FileName))
Exit Sub
End If
'设置临时路径，为了防止多用户访问时的冲突，设了一个application对象
If Application("image") = "" Then
Application("image") = 0
End If
Application.Lock()
temppath = Server.MapPath(CStr(Application("image"))) '临时路径
Application("image") = Application("image") + 1
Application.UnLock()
'读取图片的数据
ReDim bigdata((Me.File1.PostedFile.InputStream.Length)
Me.File1.PostedFile.InputStream.Read(bigdata, 0, UBound(bigdata)) '将原图片数据读到bigdata中
'改变图片的大小
image = System.Drawing.Image.FromStream(Me.File1.PostedFile.InputStream)
'newimage里面的size也可另外设置，我只用了80*60和60*80两种
If image.Width > image.Height Then
newimage = image.GetThumbnailImage(80, 60, callb, New System.IntPtr(0))
Else
newimage = image.GetThumbnailImage(60, 80, callb, New System.IntPtr(0))
End If
image.Dispose()
'将新图片及图片变小后存到临时路径中
newimage.Save(temppath, System.Drawing.Imaging.ImageFormat.Jpeg)
newimage.Dispose()
'读取临时文件数据到smalldata中
fs = New System.IO.FileStream(temppath, IO.FileMode.Open, IO.FileAccess.Read)
ReDim smalldata(fs.Length)
fs.Read(smalldata, 0, UBound(smalldata))
fs.Close()
'上述获得小图片的方法我原本想用system.io.memorystream的，可是行不通：代码如下：
'dim m as system.io.memorystream
'm=new system.io.memorystream()
'newimage.save(m,System.Drawing.Imaging.ImageFormat.Jpeg)
'redim smalldata(m.length)
'm.read(smalldata,0,m.length)
'可是上述方法读出来的smalldata全是空的，不知道原因，请指教
'删除临时文件
If f.Exists(temppath) Then
f.Delete(temppath)
End If
'将数据加入数据库中
'由于数据库中有image字段，我用sql插不进去，就用一个存储过程
'请教各位大虾用sql语句插入有image字段的表该怎么写
'用insert into talbe(pic,picsmall) values("&bigdata&","&smalldata&")这样不行，用'"&bigdata&"'也不行呀！
SqlConn = New System.Data.SqlClient.SqlConnection(connstr) '可自己设置connstr连接数据库服务器
SqlComm = New System.Data.SqlClient.SqlCommand()
SqlComm.CommandType = CommandType.StoredProcedure
SqlComm.CommandText = "dbo.image"
pic = New System.Data.SqlClient.SqlParameter("@pic", SqlDbType.Image)
pic.Value = bigdata
picsmall = New System.Data.SqlClient.SqlParameter("@picsmall", SqlDbType.Image)
picsmall.Value = smalldata
SqlComm.Parameters.Add(pic)
SqlComm.Parameters.Add(picsmall)
SqlComm.Connection = SqlConn
SqlComm.Connection.Open()
SqlComm.ExecuteNonQuery()
SqlComm.Connection.Close()
SqlComm.Dispose()
SqlConn.Dispose()
End Sub
End Class

dbo.image存储过程如下:
create proc dbo.image
@pic image,
@picsmall image
as
insert into table(pic,picsmall) values (@pic,@picsmall)

（出处：开发者俱乐部）