WebMar 8, 2013 · You can add method: private static bool IsNotEmptyTree (object value) { if (value == null) return false; //Is empty whatever if (value as List> != null) { var dict = (value as List>); return dict.Count > 0; } // not empty return true; } And use it in Where: WebDec 21, 2011 · public IEnumerable GetStrings (KeyValuePair> kvp) { List result = new List (); result.Add (kvp.Key); result.AddRange (kvp.Value.Select (s => "\t" + s)); return result; } Then you could do this: List result = theDictionary .SelectMany (kvp => GetStrings (kvp)).ToList (); Or generically:
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WebC# 请检查我的正则表达式以匹配颜色文本,c#,regex,C#,Regex,我需要做一些正则表达式匹配来给richtextbox中的一些文本上色 我已经编写了一个代码，但在性能方面有一个问题，当我在richtextbox中编写时，文本显示速度非常慢，不像正常的RichetTextBox，尤其是当文本变长时 我试着在一个单独的线程中设置每个 ... WebMar 20, 2024 · The Dictionary does not have AddRange method, so you can't eliminate the loop from your code. As for KeyValuePair, then, again, the Dictionary does not have ready-to-use overload for this, but you have at least the following options Use Add method with manual decomposition: dictionary.Add (pair.Key, pair.Value); porter / tanker 2way overnight briefcase
c# - How to bind a dictionary to a gridview? - Stack Overflow
WebJul 13, 2011 · The closest I've got is: Dictionary MyDictionary = new Dictionary (); // Populate MyDictionary here. Grid1.DataSource = MyDictionary.Values; Grid1.DataBind (); This binds the properties in myObject to the gridview, but I'd like to get the key as well. Web如何將下面四個不同大小的列表合並到一個新列表中。 我真的不知道該怎么解決，如果我這樣做了，我會嘗試發表一些嘗試。 編輯：我應該指出我要創建的列表本身不是列表列表，而是所有組合列表字符串的列表。 WebJan 27, 2024 · System.Collections and System.Collections.Generic The collection classes in the System.Collections namespace include ArrayList and Hashtable. These classes provide some thread safety through the Synchronized property, which returns a thread-safe wrapper around the collection. porter 24 in. towel bar in oil rubbed bronze