Question

这个代码在asp.net怎么写！！

Answer 1

 protected void btnUpload_Click(object sender, EventArgs e)
    {
        if (FileUpload1.HasFile)
        {
            string fileleixing = System.IO.Path.GetExtension(FileUpload1.FileName).ToString();
            if (fileleixing == ".gif" || fileleixing == ".jpg" || fileleixing == ".bmp")
            {
                string picName = FileUpload1.FileName;
                string serverPath = Server.MapPath("../Images/images"); 
                if (!System.IO.Directory.Exists(serverPath))
                {
                    System.IO.Directory.CreateDirectory(serverPath); 
                }
                string imgName = FileUpload1.FileName; 
                string newPath = serverPath + "\\" + imgName;
                int fileLenth = FileUpload1.PostedFile.ContentLength / 1024;
                if (fileLenth < 500)
                {
                    FileUpload1.PostedFile.SaveAs(newPath);
                    this.lblMes.Text = "上传成功！";
                    this.imgPic.ImageUrl = "../Images/images/" + picName;
                }
                else
                {
                    Response.Write("<script>alert('图片大小不能大于500KB！');</script>");
                }
            }
            else
            {
                Response.Write("<script>alert('请选择图片类型文件上传！');</script>");
            }
        }
        else
        {
            Response.Write("<script>alert('请选择要上传的图片！');</script>");
        }
    }

限制500k，图片格式你自己改下就可以了

Answer 2

我有上传代码，但是我也没做过限制大小的，你百度搜搜限制大小的，