我想得到一个图片文件的宽和高.怎么做.下面的代码出错,说未将对象引用到实例.

[bhys]

Dim filepath As String
Dim imagesize As System.Drawing.Image
Dim height As String
Dim width As String
filepath = Server.MapPath("files\DSC00204.JPG")
imagesize.FromFile(filepath)
height = imagesize.Size.Height.ToString
width = imagesize.Size.Width.ToString
Response.Write("宽度" & width & "高度" & height)

[netcoder]

http://search.csdn.net/expert/topic/52/5202/2002/11/4/1145435.htm

[bingeng]

试试:
Dim imagesize As System.Drawing.Image
imagesize = System.Drawing.Image.FromFile(HttpContext.Current.Server.MapPath("files\DSC00204.JPG"))
width = imagesize.Width
height = iimagesize.Height

或
Dim imagesize As New System.Drawing.Image