c#字典遍历使用的有哪些方法

在C#中，遍历字典的方法有以下几种：

1. 使用foreach循环遍历字典中的键值对：

Dictionary<string, int> dict = new Dictionary<string, int>();

foreach (KeyValuePair<string, int> kvp in dict)
{
    string key = kvp.Key;
    int value = kvp.Value;
    Console.WriteLine("Key: {0}, Value: {1}", key, value);
}

2. 使用foreach循环遍历字典中的键：

Dictionary<string, int> dict = new Dictionary<string, int>();

foreach (string key in dict.Keys)
{
    int value = dict[key];
    Console.WriteLine("Key: {0}, Value: {1}", key, value);
}

3. 使用foreach循环遍历字典中的值：

Dictionary<string, int> dict = new Dictionary<string, int>();

foreach (int value in dict.Values)
{
    Console.WriteLine("Value: {0}", value);
}

4. 使用LINQ查询表达式遍历字典中的键值对：

Dictionary<string, int> dict = new Dictionary<string, int>();

var query = from kvp in dict
            select kvp;

foreach (var kvp in query)
{
    string key = kvp.Key;
    int value = kvp.Value;
    Console.WriteLine("Key: {0}, Value: {1}", key, value);
}