///
///除去数组中的空值和签名参数并以字母a到z的顺序排序///
/// 过滤前的参数组
/// 过滤后的参数组
public static Dictionary FilterPara(SortedDictionarydicArrayPre)
{
Dictionary dicArray = new Dictionary();foreach (KeyValuePair temp indicArrayPre)
{if (temp.Key.ToLower() != "sign" && temp.Key.ToLower() != "sign_type" && temp.Value != "" && temp.Value != null)
{
dicArray.Add(temp.Key, temp.Value);
}
}returndicArray;
}
///
///把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串///
/// 需要拼接的数组
/// 拼接完成以后的字符串
public static string CreateLinkString(DictionarydicArray)
{
StringBuilder prestr= newStringBuilder();foreach (KeyValuePair temp indicArray)
{
prestr.Append(temp.Key+ "=" + temp.Value + "&");
}//去掉最後一個&字符
int nLen =prestr.Length;
prestr.Remove(nLen- 1, 1);returnprestr.ToString();
}
///
///把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode///
/// 需要拼接的数组
/// 字符编码
/// 拼接完成以后的字符串
public static string CreateLinkStringUrlencode(DictionarydicArray, Encoding code)
{
StringBuilder prestr= newStringBuilder();foreach (KeyValuePair temp indicArray)
{
prestr.Append(temp.Key+ "=" + HttpUtility.UrlEncode(temp.Value, code) + "&");
}//去掉最後一個&字符
int nLen =prestr.Length;
prestr.Remove(nLen- 1, 1);returnprestr.ToString();
}
C# get keys and values from List
private List> KV_List = new List>();voidinitList()
{
KV_List.Add(new KeyValuePair("qwer", "asdf"));
KV_List.Add(new KeyValuePair("qwer", "ghjk"));
KV_List.Add(new KeyValuePair("zxcv", "asdf"));
KV_List.Add(new KeyValuePair("hjkl", "uiop"));
}
//#1: get all keys (remove Distinct() if you don't want it)
List allKeys = (from kvp in KV_List selectkvp.Key).Distinct().ToList();//allKeys = { "qwer", "zxcv", "hjkl" }//#2: get values for a key
string key = "qwer";
List values = (from kvp in KV_List where kvp.Key == key selectkvp.Value).ToList();//values = { "asdf", "ghjk" }//#3: get keys for a value
string value = "asdf";
List keys = (from kvp in KV_List where kvp.Value == value selectkvp.Key).ToList();//keys = { "qwer", "zxcv" }
https://stackoverflow.com/questions/31414429/c-sharp-get-keys-and-values-from-listkeyvaluepairstring-string
How to insert an item into a key/value pair object?
List> kvpList = new List>()
{new KeyValuePair("Key1", "Value1"),new KeyValuePair("Key2", "Value2"),new KeyValuePair("Key3", "Value3"),
};
kvpList.Insert(0, new KeyValuePair("New Key 1", "New Value 1"));
foreach (KeyValuePair kvp inkvpList)
{
Console.WriteLine(string.Format("Key: {0} Value: {1}", kvp.Key, kvp.Value);
}
Dictionary dicShiftDailys = new Dictionary();
dicShiftDailys = (from entry in dicShiftDailys
orderby entry.Key ascending
select entry).ToDictionary(pair => pair.Key, pair => pair.Value)