c#字典遍历使用的方法是什么
在C#中,遍历字典的方法有以下几种:
- 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);
}
- 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);
}
- 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);
}
- 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);
}
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