重建URL参数

2015-12-05 09:23:35 访问(1944) 赞(0) 踩(0)


        /// <summary>
        /// 重建URL参数
        /// </summary>
        /// <param name="noContainsKey">keyOne|keyTwo|keyThree模式</param>
        /// <returns></returns>
        public static string RebuildQueryStringByParams
            (
                string noContainsKey
            )
        {
            HttpRequest hr = HttpContext.Current.Request;

            int iCount = hr.QueryString.Count;

            if (iCount == 0)
                return "";

            string noContainsKeyText = "";

            if (noContainsKey != null)
            {
                noContainsKey = noContainsKey.Trim();

                if (noContainsKey.Length != 0)
                {
                    noContainsKeyText =
                        new StringBuilder("|").Append(noContainsKey).Append("|").ToString().ToLower();
                }
            }

            string sKey = null;
            
            StringBuilder theResult = new StringBuilder();


            if (noContainsKeyText.Length == 0)
            {
                sKey = hr.QueryString.Keys[0];

                theResult.Append(sKey);
                theResult.Append("=");
                theResult.Append(hr.QueryString[sKey]);

                for (int i = 1; i < iCount; ++i)
                {
                    theResult.Append("&");

                    sKey = hr.QueryString.Keys[i];

                    theResult.Append(sKey);
                    theResult.Append("=");
                    theResult.Append(hr.QueryString[sKey]);
                }
            }
            else
            {
                bool isFill = false;
                StringBuilder sbKey = null;

                for (int i = 0; i < iCount; ++i)
                {
                    sKey = hr.QueryString.Keys[i];

                    sbKey = new StringBuilder();
                    sbKey.Append("|");
                    sbKey.Append(sKey.Trim().ToLower());
                    sbKey.Append("|");

                    if (noContainsKeyText.Contains(sbKey.ToString()))
                        continue;

                    if (isFill)
                    {
                        theResult.Append("&");
                    }
                    else
                    {
                        isFill = true;
                    }

                    theResult.Append(sKey);
                    theResult.Append("=");
                    theResult.Append(hr.QueryString[sKey]);
                }
            }

            return theResult.ToString();
        }