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上传图片文件

2024-07-18 18:44:34   223人阅读

此处上传文件，使用FileUpload控件。

图片上传 ：<asp:FileUpload ID="FileUpload1" runat="server" onchange="PreviewImg(this)" /> <asp:HiddenField ID="hildimage" runat="server" />

下面是代码：

    public void upload_Click()    {        try        {            if (FileUpload1.PostedFile.FileName == "")            {                  check.showMess(this, "图片不能为空！");            }            else            {                string fullname = FileUpload1.FileName.Replace(",", " ").Trim();                string typ2 = fullname.Substring(fullname.LastIndexOf(".") + 1).ToLower().ToString();                string fn = DateTime.Now.ToString("yyyyMMddHHmmss") + "." + typ2;                if (typ2 == "gif" || typ2 == "jpg" || typ2 == "bmp" || typ2 == "png")                {                    string img = hildimage.Value;                    if (img != "")                    {                        string imgpath = Server.MapPath("../" + img);                        File.Delete(imgpath);                    }                    FileUpload1.SaveAs(Server.MapPath("../upload/") + fn);           //将文件保存在根目录的UP文件夹下                      hildimage.Value = http://www.mamicode.com/"upload/" + fn;                }                else                {                    check.Show_ErrorMsg("文件类型不支持!");                    Response.End();                }            }        }        catch (Exception ex)        {            check.Show_ErrorMsg("上传发生错误！原因是：" + ex.ToString());            Response.End();        }    }

 


             


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