牛腩购物32：完成整个网站的功能制作（后台产品列表，多表查询+分页）,产品修改保存，图片的上传保存
查询商品表，和分类别，获取商品的类别名称,需要用到多表查询+分页
/// <summary>多表查询分页获取数据列表 /// </summary> /// <param name="tblName">多个表 例如：news a inner join category b on a.caId=b.id and a.caId=b.id</param> /// <param name="strGetFields">多个字段 例如：a.id,a.title,a.caid,a.createtime,a.content,b.name</param> /// <param name="strOrder">排序字段</param> /// <param name="strOrderType">排序类型 desc或者asc</param> /// /// <param name="PageSize">页面大小</param> /// <param name="PageIndex">页索引</param> /// <param name="strWhere">条件</param> /// <returns></returns> public DataSet GetList(string tblName,string strGetFields, string strOrder, string strOrderType, int PageSize,
int PageIndex, string strWhere) { Database db = DatabaseFactory.CreateDatabase(); DbCommand dbCommand = db.GetStoredProcCommand("proc_FenYe"); db.AddInParameter(dbCommand, "tblName", DbType.AnsiString,tblName); db.AddInParameter(dbCommand, "strGetFields", DbType.AnsiString, strGetFields); db.AddInParameter(dbCommand, "PageSize", DbType.Int32, PageSize); db.AddInParameter(dbCommand, "PageIndex", DbType.Int32, PageIndex); db.AddInParameter(dbCommand, "strOrder ", DbType.String, strOrder); db.AddInParameter(dbCommand, "strOrderType", DbType.String, strOrderType); db.AddInParameter(dbCommand, "strWhere", DbType.AnsiString, strWhere); return db.ExecuteDataSet(dbCommand); }
调用方式
//绑定循环 private void BindRep() { repPro.DataSource = prodao.GetList("shop_category a inner join shop_product b on a.id = b.caid",
" b.id,proname,marketprice,memberprice,vipprice,caname", "b.createdate", "desc", anp.PageSize, anp.CurrentPageIndex, GetCond()); repPro.DataBind(); }
//保存或者是修改 protected void btnSave_Click(object sender, EventArgs e) { string proname = txtProname.Text.Trim(); string procate = ddlCate.SelectedValue; string proimg = img.ToolTip; string marketprice = txtMarket.Text.Trim(); string memberprice = txtMember.Text.Trim(); string vipprice = txtVip.Text.Trim(); string prostate = txtState.Text.Trim(); string guige = txtGg.Text.Trim(); string danwe = txtDw.Text.Trim(); //如何获取CheckBoxList 的值呢？实际上CheckBoxList生成的html是多个id和name都不同的checkbox int tejia = chk.Items[0].Selected ? 1 : 0; //如果第一项被选择，那么赋值为1，否则即使没有选择，也赋值为0 int xinp = chk.Items[1].Selected ? 1 : 0; int vip = chk.Items[2].Selected ? 1 : 0; string desc = txtDesc.Text.Trim(); //开始验证 if (proname.Length==0 || marketprice.Length==0 || memberprice.Length==0 || vipprice.Length==0 ) { Niunan.Shop.Utility.Tool.alert("商品名称,价格不能为空", this.Page); return; } //验证价格 decimal a, b, c; if (!decimal.TryParse(marketprice,out a) ||!decimal.TryParse(memberprice,out b) ||!decimal.TryParse(vipprice,out c)) { Utility.Tool.alert("价格必须是数字", this.Page); return; } Model.Product pt = new Model.Product { proname = proname, caid = int.Parse(procate), proimg = proimg, marketprice = decimal.Parse(marketprice), memberprice = decimal.Parse(memberprice), vipprice = decimal.Parse(vipprice), state = prostate, guige = guige, danwei = danwe, istj = tejia, isvip = vip, isxp = xinp, prodesc = desc }; //我们先判断，这是不是修改，如果是修改商品，我们就直接修改，后面的增加，我们就不执行了 string id = Request.QueryString["id"]; int x; if (int.TryParse(id, out x)) { pt.id = x; pd.Update(pt); Niunan.Shop.Utility.Tool.alert("修改成功", "product_list.aspx", this.Page); return; } //这里是添加商品 pd.Add(pt); Niunan.Shop.Utility.Tool.alert("保存成功", Request.Url.ToString(), this.Page); } //图片上传保存 protected void btnUpload_Click(object sender, EventArgs e) { try { string[] houzhui = { ".jpg", ".png", ".jpeg", ".bmp" }; string savaPath = Server.MapPath("~/upload/image/"); string proimg=Niunan.Shop.Utility.Tool.Upload(fileImg, houzhui, 2, savaPath); img.ImageUrl = "~/upload/image/" + proimg; img.ToolTip = proimg;//这个值,是最后我们保存到数据库的值,但是没有加 upload/image ，我们在前台显示要手动加 } catch (Exception ex) { Niunan.Shop.Utility.Tool.alert(ex.Message, this.Page); } }
/// <summary>上传文件方法 /// /// </summary> /// <param name="myFileUpload">上传控件ID</param> /// <param name="allowExtensions">允许上传的扩展文件名类型,如：string[] allowExtensions =
{ ".doc", ".xls", ".ppt", ".jpg", ".gif" };</param> /// <param name="maxLength">允许上传的最大大小，以M为单位</param> /// <param name="savePath">保存文件的目录，注意是绝对路径,如：Server.MapPath("~/upload/");</param> /// <param name="saveName">保存的文件名，如果是""则以原文件名保存</param> public static string Upload(FileUpload myFileUpload, string[] allowExtensions, int maxLength, string savePath) { // 文件格式是否允许上传 bool fileAllow = false; //检查是否有文件案 if (myFileUpload.HasFile) { // 检查文件大小, ContentLength获取的是字节，转成M的时候要除以2次1024 if (myFileUpload.PostedFile.ContentLength / 1024 / 1024 >= maxLength) { throw new Exception("只能上传小于" + maxLength + "M的文件！"); } //取得上传文件之扩展文件名，并转换成小写字母 string fileExtension = System.IO.Path.GetExtension(myFileUpload.FileName).ToLower(); string tmp = ""; // 存储允许上传的文件后缀名 //检查扩展文件名是否符合限定类型 for (int i = 0; i < allowExtensions.Length; i++) { tmp += i == allowExtensions.Length - 1 ? allowExtensions[i] : allowExtensions[i] + ","; if (fileExtension == allowExtensions[i]) { fileAllow = true; } } if (fileAllow) { try { string datedir = DateTime.Now.ToString("yyyyMMdd"); if (!Directory.Exists(savePath + datedir)) { Directory.CreateDirectory(savePath + datedir); } string saveName = Guid.NewGuid() + fileExtension;//这里是使用 guid的值来保存为图片的名字 string path = savePath + datedir + "/" + saveName; //存储文件到文件夹 myFileUpload.SaveAs(path); return datedir + "/" + saveName; } catch (Exception ex) { throw new Exception(ex.Message); } } else { throw new Exception("文件格式不符，可以上传的文件格式为：" + tmp); } } else { throw new Exception("请选择要上传的文件！"); } }
