/// <summary>获取基础Url，用于附加参数</summary>
/// <param name="where">查询条件，不包含排序和分页</param>
/// <param name="order">排序</param>
/// <param name="page">分页</param>
/// <returns></returns>
public virtual StringBuilder GetBaseUrl(Boolean where, Boolean order, Boolean page)
{
var sb = new StringBuilder();
var dic = Params;
// 过滤
dic = PagerHelper.FilterSpecialChar(dic);
// 先构造基本条件，再排序到分页
if (where)
{
sb.UrlParamsExcept(dic, _.Sort, _.Desc, _.PageIndex, _.PageSize);
}
if (order)
{
sb.UrlParams(dic, _.Sort, _.Desc);
}
if (page)
{
sb.UrlParams(dic, _.PageIndex, _.PageSize);
}
return(sb);
}