图片上传和文件夹创建、文件上传

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 protected void btnUp_Click(object sender, EventArgs e)
        {


            string savePath = @"images/";//图片保存路径
            string fileName = Server.HtmlEncode(picupload.FileName);
            string extension = System.IO.Path.GetExtension(fileName).ToLower();//取得扩展名
            string ImageName = "";
            String[] allowExtension = { ".jpg", ".jif", ".jpeg", ".jpe", ".png", ".bmp" };



            for (int i = 0; i < allowExtension.Length; i++)
            {



                if (extension == allowExtension[i] && fileName != "nopic.jpg")
                {

                    ImageName = DateTime.Now.ToString("yyyyMMddhhmmssfff") + extension;
                    savePath += ImageName;
                    savePath = Server.MapPath(savePath);
                    picupload.SaveAs(savePath);

                    Response.Write("<script>alert(‘图片上传成功‘),location.href=‘Test.aspx‘</script>");
                }

                else
                {
                    Label1.Text = "请选择jpg, jif, jpeg, jpe, png, bmp格式的图片";


                }



            }

            #region 文件上传
            String Year = DateTime.Now.Year.ToString();
            String Month = DateTime.Now.Month.ToString();
            String Day = DateTime.Now.Day.ToString();

            String Time = Year + Month + Day;

            //创建文件夹的绝对路径
            String Path = @"D:\搜狗高速下载\Shop\Shop\Admin\Download\" + Time;
            //上传文件的路径
            String savePath = @"Download\\" + Time + "\\";
            //判断是否存在这个文件夹
            if (!Directory.Exists(Path))
            {
                //创建文件夹
                Directory.CreateDirectory(Path);


                savePath = File(savePath);


            }
            else
            {

                savePath = File(savePath);


            }

            #endregion

 private String File(String savePath)
        {
            //文件保存路径

            string fileName = Server.HtmlEncode(FileUpload1.FileName);
            string extension = System.IO.Path.GetExtension(fileName).ToLower();//取得扩展名
            string ImageName = "";
            String[] allowExtension = { ".txt", ".docx", ".xls", ".pptx", ".xlsx", ".doc" };



            for (int i = 0; i < allowExtension.Length; i++)
            {



                if (extension == allowExtension[i])
                {

                    ImageName = fileName;
                    savePath += ImageName;
                    savePath = Server.MapPath(savePath);
                    FileUpload1.SaveAs(savePath);
                    HiddenField1.Value = savePath;
                    Label1.Text = "";




                }



                else
                {
                    if (HiddenField1.Value == "")
                    {
                        Label1.Text = "请选择txt, docx, xls, pptx, xlsx, doc格式的文件";
                    }


                }
            }

            return savePath;
        }

//创建文件夹的绝对路径
            String Path = @"D:\搜狗高速下载\Shop\Shop\Admin\Download\" + Time;
            //上传文件的路径
            String savePath = @"Download\\" + Time + "\\";
            //判断是否存在这个文件夹
            if (!Directory.Exists(Path))
            {
                Directory.CreateDirectory(Path);

                //创建文件夹
                savePath = File(savePath);
            }
            else
            {

                savePath = File(savePath);
            }

<div>
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
        <asp:Button ID="btnUp" runat="server" Text="上传图片" OnClick="btnUp_Click" />
        <asp:FileUpload ID="picupload" runat="server" />
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
                <asp:Label ID="Label1" runat="server" ForeColor="Red"></asp:Label>
            </ContentTemplate>
        </asp:UpdatePanel>
        <img src="images/20140915024843589.jpg" width="100px" />
    </div>

图片上传和文件夹创建、文件上传

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原文地址：http://www.cnblogs.com/G-XiaoHua/p/4832267.html