C#合并两个Dictionary的方法
直接代码：1public Dictionary<string, string> MergeDictionary(Dictionary<string, string> first, Dictionary<string, string> second)
2 {
3 if (first == null) first = new Dictionary<string, string>();
4 if (second == null) return first;
5
6 foreach (var item in second)
7 {
8 if (!first.ContainsKey(item.Key))
9 first.Add(item.Key, item.Value);
10 }
11
12 return first;
13 }View Code
第二种：
1public Dictionary<string, string> MergeDictionary(Dictionary<string, string> first, Dictionary<string, string> second)
2 {
3 if (first == null) first = new Dictionary<string, string>();
4 if (second == null) return first;
5
6 //相对于第一种只是修改了遍历的方法
7 foreach (string key in second.Keys)
8 {
9 if (!first.ContainsKey(key))
10 first.Add(key,second);
11 }
12 return first;
13 }View Code
文档来源：51CTO技术博客https://blog.51cto.com/u_15311900/3177383
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