[求助]图片保存路径判断与新建 - 专家坐堂 - Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

Dim s As String=Guid.NewGuid().ToString().replace("-","")

Dim y As String =Date.Today.year.Tostring

Dim m As String=Date.Today.Month.Tostring

Dim fl As String = ProjectPath & "web\upload\" & y & "\" & m & "\" & s

Dim fl2 As String = "./upload/" & y & "/" & m & "/" & s

Dim bs As Byte() = Convert.FromBase64String(“Base64String”)

Dim stream As System.IO.Stream = New System.IO.MemoryStream(bs)

Dim bmp As System.Drawing.Bitmap = New System.Drawing.Bitmap(stream)

bmp.Save(fl & "." & hzs(2), System.Drawing.Imaging.ImageFormat.Jpeg)

图片保存过程中，如果文件路径（fl）中的文件夹不存在，图片就无法保存，怎么写校验这个路径是否存在，如果不存在，先新建？

主题：[求助]图片保存路径判断与新建