如何从c＃2.0中删除当前网页查询字符串的查询字符串的特殊列表

Question

说我目前的页面url已经得到（http：//mysite/english/faq.aspx？faqid = 12123 & cid = 4545 & intcid = 65456 & H =人）

string excludeQuerystring = DynConfig.Item("GoogleSEOLinkSettings/ExcludeQuerystring"); //this is the list of my exclude querystring (cid,intcid,del) 

querystring = HttpContext.Current.Request.Url.AbsoluteUri.Split('?')[1]; //I will get faqid=12123&cid=4545,intcid=65456 

StringBuilder fullQueryString = new StringBuilder(); 

if (!string.IsNullOrEmpty(excludeQuerystring) && !string.IsNullOrEmpty(querystring)) 
{ 
    string[] strEQ = excludeQuerystring.Split(','); //making a array of excluded querystrings 

    NameValueCollection navValues = HttpUtility.ParseQueryString(querystring); //getting the list of querystring in NameValueCollection 

    if (navValues.Count > 0) 
    { 
     string[] strQ = navValues.AllKeys; 
     if(strQ.Length>0) 
     { 

     } 
    } 
} 

querystring= ?+faqid=12123&h=man //here I want updated querystring which does not have any querystring which is there in my excludeQuerystring 

我很困惑如何得到这个，其实我想打一个函数，它会做这一切。

请建议!!

编辑：

我申请新代码来解决上述问题，但得到的小卡，而转换的NameValueCollection再次查询字符串。

protected void Page_Load(object sender, EventArgs e) 
     { 
      string querystring = string.Empty; 

      string excludeList = "cid,intcid,del"; 

      if (!string.IsNullOrEmpty(excludeList)) 
      { 
       string getFinalString = GetQueryString(excludeList); 
       getFinalString = "?" + getFinalString; 
      } 
     } 

     public string GetQueryString(string excludeArray) 
     { 
      string retQueryString = string.Empty; 
      if (excludeArray.IndexOf(",") != -1) 
      { 
       string[] strArray = excludeArray.Split(",".ToCharArray()); 
       NameValueCollection filtered = new NameValueCollection(); 

       filtered.Add(HttpUtility.ParseQueryString(Request.Url.Query)); 
       if (filtered.HasKeys()) 
       { 
        foreach (string strMatch in strArray) 
        { 
         filtered.Remove(strMatch); 
        } 
        retQueryString = filtered.ToString(); //Here I am not able to convert back to querystring, however there are other ways to get it like (http://leekelleher.com/2008/06/06/how-to-convert-namevaluecollection-to-a-query-string/), is there any other way to do that 
       } 
      } 

      return retQueryString; 
     } 

Answer 1

方式下面是完美的解决方案我得到了它，在这个任何评论。

string excludeList = "cid,intcid,del"; 

string getFinalString = Regex.Replace(Regex.Replace(Regex.Replace(Request.Url.Query, @"^\?", "&"), "&(" + excludeList.Replace(",", "|") + ")=[^&]*", "", RegexOptions.IgnoreCase), "^&", "?"); 

Answer 2

我们不能直接删除查询字符串象下面这样：

Request.QueryString.Remove("foo") 

如果你这样做，你会得到一个错误 - 集合为只读。所以，我们需要在删除查询字符串之前编写下面的代码。

在C＃：

PropertyInfo isreadonly = 
typeof(System.Collections.Specialized.NameValueCollection).GetProperty(
"IsReadOnly", BindingFlags.Instance | BindingFlags.NonPublic); 
// make collection editable 
isreadonly.SetValue(this.Request.QueryString, false, null); 
// remove 
this.Request.QueryString.Remove("foo"); 

希望这将帮助你！

Answer 3

是有一个比较两个数组

 var array1 = new byte[] { 1, 2, 5, 4 }; 
     var array2 = new byte[] { 1, 2, 3, 4 }; 

     var areEqual = array1.SequenceEqual(array2); //return boolean value True or False