正文
ASP.NET 动态属性筛选和分页绑定
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分页控件为：AspNetPager.dll
我们先建立一个产品属性名称表
CREATE TABLE ProductAttr
(
[ID] [int] IDENTITY(1,1) NOT NULL primary key,
[ParentID] [int] NULL,
[Kind] [int] NULL,
[CNName] [nvarchar](50) NOT NULL,
[ENName] [nvarchar](50) NOT NULL,
[Sort] [int] NOT NULL,
[AddTime] [datetime],
)
再建一个属性内容表
CREATE TABLE ProductAttrInfo
(
[ID] [int] IDENTITY(1,1) NOT NULL primary key,
[ParentID] [int] NULL,
[CNName] [nvarchar](50) NOT NULL,
[Sort] [int] NOT NULL,
[AddTime] [datetime] NOT NULL,
[Color] [nvarchar](50) NULL,
)
产品表叫Product
页面呈现效果为：
其中的产品分类、形状、其他为动态的产品属性名称，对象相关的属性内容。
我们首页要把相关的内容绑定，然后再根据传参，把相关的属性编号和内容编号，通过正则的方式找出来，然后把当前也是和属性内容的ID找出来，方便我们查询产品。
/// <summary>
/// 通过正则，把相关的属性ID拿到，然后判断属性名称ID的值即为属性值的ID值
/// </summary>
/// <param name="ids"></param>
/// <returns></returns>
protected int getAttrSql(int ids)
{
int value = ;
string url = Request.Url.ToString().ToLower();
if (url.IndexOf("?") >= )
{
string index = url.Remove(, url.IndexOf("?") + );
string para = index.Replace("?", "");
//切割成一个一个的参数并转换成SQL语句
string[] ps = para.Split('&');
string sql = "";
for (int i = ; i < ps.Length; i++)
{
string s = ps[i];
//检查参数是否是p\d*=\d*开头的，如果是则认为这个参数是属性的参数
if (System.Text.RegularExpressions.Regex.IsMatch(s, @"p\d{1,}=\d{1,}"))
{
//去掉p切割成数字
string[] pp = s.Replace("p", "").Split('=');
int c = int.Parse(pp[].ToString());
if (c == ids)
{
value = int.Parse(pp[].ToString());
break;
}
}
}
}
return value;
}
/// <summary>
/// 绑定相关属性名称和内容，其中参数one和two，我这里是一级二级产品编号，可以忽略，ParentID为一级产品分类的ID，Kind为二级产品分类的ID
/// </summary>
/// <param name="one"></param>
/// <param name="two"></param>
public void BindAttrInfo(Model.ProductType one, Model.ProductType two)
{
StringBuilder sb = new StringBuilder();
//if (two != null)
//{
// List<Model.ProductAttr> list = new BLL.ProductAttr().GetList(0, "CNName,ID", "ParentID=" + one.ID + " and Kind=" + two.ID + "", "Sort desc,AddTime desc");
// foreach (Model.ProductAttr l in list)
// {
// sb.AppendFormat("<dl class=\"clearfix\"><dt>{0}</dt>", l.CNName);
// List<Model.ProductAttrInfo> list2 = new BLL.ProductAttrInfo().GetList(0, "CNName,ID", "Pid=" + l.ID + "", "Sort desc,AddTime desc");
// if (list2.Count > 0)
// {
// sb.AppendFormat("<dd><a href=\"{0}\" {1}>全部</a>", getUrl("p" + l.ID.Value, ""), getAttrSql(l.ID.Value) <= 0 ? "class=\"cur\"" : "");
// foreach (Model.ProductAttrInfo l2 in list2)
// {
// sb.AppendFormat("<a href=\"{0}\" {1}>{2}</a>", getUrl("p" + l.ID.Value, l2.ID.Value.ToString()), getAttrSql(l.ID.Value) == l2.ID.Value ? "class=\"cur\"" : "", l2.CNName);
// }
// sb.AppendFormat("</dd>");
// }
// sb.Append("</dl>");
// }
//}
//else
//{
List<Model.ProductType> twoType = new BLL.ProductType().GetList(, "CNName,ID", "IsPass=1 and Kind=" + one.ID + "", "Sort desc,AddTime desc");
if (twoType.Count > )
{
sb.AppendFormat("<dl class=\"clearfix\"><dt>产品分类</dt><dd>");
sb.AppendFormat("<a {1} href=\"/products/?ParentID={0}\">全部</a>", one.ID, Kind <= ? "class=\"cur\"" : "");
foreach (Model.ProductType l in twoType)
{
sb.AppendFormat("<a href=\"/products/?ParentID={0}&Kind={1}\" {3}>{2}</a>", one.ID.Value, l.ID.Value, l.CNName, Kind == l.ID.Value ? "class=\"cur\"" : "");
}
sb.AppendFormat("</dd></dl>");
}
List<Model.ProductAttr> list = new BLL.ProductAttr().GetList(, "CNName,ID", "ParentID=" + one.ID + " and Kind=0", "Sort desc,AddTime desc");
foreach (Model.ProductAttr l in list)
{
sb.AppendFormat("<dl class=\"clearfix\"><dt>{0}</dt>", l.CNName);
List<Model.ProductAttrInfo> list2 = new BLL.ProductAttrInfo().GetList(, "CNName,ID", "Pid=" + l.ID + "", "Sort desc,AddTime desc");
if (list2.Count > )
{
sb.AppendFormat("<dd><a href=\"{0}\" {1}>全部</a>", getUrl("p" + l.ID.Value, ""), getAttrSql(l.ID.Value) <= ? "class=\"cur\"" : "");
foreach (Model.ProductAttrInfo l2 in list2)
{
sb.AppendFormat("<a href=\"{0}\" {1}>{2}</a>", getUrl("p" + l.ID.Value, l2.ID.Value.ToString()), getAttrSql(l.ID.Value) == l2.ID.Value ? "class=\"cur\"" : "", l2.CNName);
}
sb.AppendFormat("</dd>");
}
sb.Append("</dl>");
}
// }
Lit_ProductAttrList.Text = sb.ToString();
}
/// <summary>
/// 绑定产品
/// </summary>
public void BindProducts()
{
string where = "ParentID=" + ParentID + "";
if (Kind > )
{
where += " and Kind=" + Kind + ""; where += GetWhereAttr();
}
else
{
where += GetWhereAttr();
} string strOrder = "Sort desc,AddTime desc";
if (OrderBy == )
{
strOrder = "SaleNum desc,Sort desc,AddTime desc";
}
else if (OrderBy == )
{
strOrder = "SalPrice,Sort desc,AddTime desc";
} Model.PageData<Model.Product> data = new BLL.Product().GetList(, base.PageIndex, "", where, strOrder);
repList.DataSource = data.DataSoure;
repList.DataBind();
pgServer.RecordCount = data.Count;
pgServer.UrlRewritePattern = getUrl("", "").Replace("#pro-list", "") + "&page={0}#pro-list";
pgServer.PageSize = ;
AllCount = data.Count;
AllPage = data.PageCount;
ThisPage = base.PageIndex;
if (ThisPage < )
{
ThisPage = ;
}
if (AllPage == )
{
ThisPage = ;
}
pgServer.DataBind();}
/// <summary>
/// 获取Url
/// </summary>
/// <param name="name"></param>
/// <param name="value"></param>
/// <returns></returns>
protected string getUrl(string name, string value)
{
string url = System.Text.RegularExpressions.Regex.Replace(Request.Url.Query.Trim(), @"^\?", "");
url = System.Text.RegularExpressions.Regex.Replace(url, "^" + name + "=.*?&|" + name + "=.*?&", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
url = System.Text.RegularExpressions.Regex.Replace(url, "&{0,1}" + name + "=.*", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
url = System.Text.RegularExpressions.Regex.Replace(url, "^page=.*?&|page=.*?&", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
url = System.Text.RegularExpressions.Regex.Replace(url, "&{0,1}page=.*", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
if (url.Trim() == "")
{
return "/products/?" + name + "=" + value + "#pro-list";
}
return getReplaceUrl("/products/?" + name + "=" + value + "&" + url.Replace("#pro-list", "") + "#pro-list", "key");
}
/// <summary>
/// 获取Url
/// </summary>
/// <param name="name"></param>
/// <param name="value"></param>
/// <returns></returns>
protected string getReplaceUrl(string url, string name)
{
url = System.Text.RegularExpressions.Regex.Replace(url, "^" + name + "=.*?&|" + name + "=.*?&", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
url = System.Text.RegularExpressions.Regex.Replace(url, "^page=.*?&|page=.*?&", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
url = System.Text.RegularExpressions.Regex.Replace(url, "&{0,1}page=.*", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase); return url;
}
/// <summary>
/// 获取属性条件-绑定
/// </summary>
/// <returns></returns>
protected string GetWhereAttr(string where)
{
string value = "";
string url = Request.Url.ToString().ToLower();
if (url.IndexOf("?") >= )
{
string index = url.Remove(, url.IndexOf("?") + );
string para = index.Replace("?", "");
//切割成一个一个的参数并转换成SQL语句
string[] ps = para.Split('&');
string sql = "";
for (int i = ; i < ps.Length; i++)
{
string s = ps[i];
//检查参数是否是p\d*=\d*开头的，如果是则认为这个参数是属性的参数
if (System.Text.RegularExpressions.Regex.IsMatch(s, @"p\d{1,}=\d{1,}"))
{
//去掉p切割成数字
string[] pp = s.Replace("p", "").Split('=');
int c = int.Parse(pp[].ToString());
//c为属性内容的编号，根据程序自己做判断
}
}
}
return value;
}
