上传图片简易代码

public void UploadImg(string folderName)
    {
        if (!FileUpload1.HasFile) return;
        string extendName = Path.GetExtension(FileUpload1.PostedFile.FileName);
        string[] fileType = { ".gif", ".png", ".jpg", ".jpeg", ".bmp" };
        if (!fileType.Contains(extendName))
        {
            ScriptManager.RegisterClientScriptBlock(btn_FileUp, btn_FileUp.GetType(), "script", "alert('上传图片格式不正确');", true);
        }
        else
        {
            string fName = string.Format("{0:yyyyMM}", DateTime.Now);
            if (!Directory.Exists(Server.MapPath(folderName)))
            {
                if (folderName != null) Directory.CreateDirectory(string.Format("~/sc/{0}/{1}/",fName,Server.MapPath(folderName)));
            }
            string newPath = Server.MapPath(folderName) + DateTime.Now.ToString("yyyyMMddhhmmss")+extendName;
            FileUpload1.PostedFile.SaveAs(newPath);
            //这里可以给图片控件赋值,给隐藏字段赋值
        }
    }

更新于2018年12月25日