//循环 foreach (object key in B.Keys) { if (A.Contains(key)) continue; A.Add(key, B[key]); }
Hashtable A = new Hashtable(); A.Add("城市", "南京"); A.Add("省会", "南京"); Hashtable B = new Hashtable(); B.Add("早饭", "粥"); B.Add("中饭", "粥"); //循环 foreach (object key in B.Keys) { if (A.Contains(key)) continue; A.Add(key, B[key]); }
foreach (DictionaryEntry de in B) { A.Add(de.Key.ToString(), de.Value.ToString()); }
foreach (System.Collections.DictionaryEntry objDE in B) { a.Add(objDE.Key.ToString(),objDE.Value.ToString()); }建议你使用泛型集合。 Dictionary<string, string> b = new Dictionary<string, string>(); b.Add("早饭"," 粥");
Dictionary<string, string> A = new Dictionary<string, string>(); A.Add("城市", "南京"); A.Add("省会", "南京"); Dictionary<string, string> B = new Dictionary<string, string>(); B.Add("早饭", "粥"); B.Add("中饭", "粥"); //循环 foreach (string key in B.Keys) { if (A.ContainsKey(key)) continue; A.Add(key, B[key]); } //Linq A = A.Concat(B).Distinct().ToDictionary(a => a.Key, b => b.Value); foreach (string key in A.Keys) { Console.WriteLine(key + ":" + A[key]); }
foreach (object key in B.Keys)
{
if (A.Contains(key)) continue;
A.Add(key, B[key]);
}
A.Add("城市", "南京");
A.Add("省会", "南京");
Hashtable B = new Hashtable();
B.Add("早饭", "粥");
B.Add("中饭", "粥");
//循环
foreach (object key in B.Keys)
{
if (A.Contains(key)) continue;
A.Add(key, B[key]);
}
{
A.Add(de.Key.ToString(), de.Value.ToString());
}
{
a.Add(objDE.Key.ToString(),objDE.Value.ToString());
}建议你使用泛型集合。
Dictionary<string, string> b = new Dictionary<string, string>();
b.Add("早饭"," 粥");
A.Add("城市", "南京");
A.Add("省会", "南京");
Dictionary<string, string> B = new Dictionary<string, string>();
B.Add("早饭", "粥");
B.Add("中饭", "粥");
//循环
foreach (string key in B.Keys)
{
if (A.ContainsKey(key)) continue;
A.Add(key, B[key]);
}
//Linq
A = A.Concat(B).Distinct().ToDictionary(a => a.Key, b => b.Value);
foreach (string key in A.Keys)
{
Console.WriteLine(key + ":" + A[key]);
}