在C#中,`List<KeyValuePair<string, double>>` 是一个包含键值对的列表,其中键是字符串类型,值是双精度浮点数类型。对这样的列表进行排序通常是基于键或值进行的。下面是...
从List <KeyValuePair<string,string >>返回匹配的项目,可以使用LINQ查询。以下是一个C#代码示例: 代码语言:csharp 复制 usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;classProgram{staticvoidMain(string[]args){List<KeyValuePair<string,string>>list=newList<KeyValuePair<string,string>>...
两者都可以通过KeyValuePair<TKey,TValue>进行遍历,并且两者可以相互转换: List<KeyValuePair<string,string>> list = new List<KeyValuePair<string, string>>(); list.Add(new KeyValuePair<string, string>("asdf1", "1")); list.Add(new KeyValuePair<string, string>("asdf1", "1")); list.Add...
C# LINQ List<KeyValuePair<string, KeyValuePair<int, int>>> Group by to List<KeyValuePair<string, List<KeyValuePair<int, int>>> C# LINQ one condition, return multiple columns and rows C# LINQ order by not working for a SQL table with a primary key C# LinQ query to pull top 3 re...
Console.WriteLine("请输入添加的姓名:");stringname =Console.ReadLine(); Console.WriteLine("请输入年龄 性别 爱好 联系方式:");stringstr =Console.ReadLine(); listkey.Add(newKeyValuePair<string,string>(name, str)); Console.WriteLine("成功");break;case2: ...
string str = Console.ReadLine(); listkey.Add(new KeyValuePair<string, string>(name, str)); Console.WriteLine("成功"); break; case 2: Console.WriteLine("请输入查找的姓名:"); string nameQuery = Console.ReadLine(); Console.WriteLine(); ...
string v = mySortedList.Values[3]; SortedList<TKey,TValue> 會實作為索引鍵/值組的陣列,依索引鍵排序。 每個專案都可以擷取為 KeyValuePair<TKey,TValue> 物件。只要索引鍵物件在 SortedList<TKey,TValue>中當做索引鍵使用,就必須是固定的。 SortedList<TKey,TValue> 中的每個索引鍵都必須是唯一的。
foreach( KeyValuePair<int, string> kvp in mySortedList ) { Console.WriteLine("Key = {0}, Value = {1}", kvp.Key, kvp.Value); } foreach 语句是枚举器周围的包装器,它只允许从集合(而不是写入到集合)进行读取。构造函数 展开表 SortedList<TKey,TValue>() 初始化 SortedList<TKey,TValue...
foreach( KeyValuePair<int, string> kvp in mySortedList ) { Console.WriteLine("Key = {0}, Value = {1}", kvp.Key, kvp.Value); } foreach 语句是枚举器周围的包装器,它只允许从集合(而不是写入到集合)进行读取。构造函数 展开表 SortedList<TKey,TValue>() 初始化 SortedList<TKey,TValue...
Console.WriteLine(); foreach( KeyValuePair<string, string> kvp in openWith ) { Console.WriteLine("Key = {0}, Value = {1}", kvp.Key, kvp.Value); } } } /* This code example produces the following output: Key = bmp, Value = paint.exe Key = dib, Value = paint.exe Key = rtf...