我希望我的LayoutManager类的用户能够写这个:
LayoutManager layoutManager = new LayoutManager();
layoutManager.AddMainContentView("customers", "intro",
new View { Title = "Customers Intro", Content = "This is customers intro." });
但是我需要在下面的AddMainContentView()字典中填写这个字典的语法是什么?
public class LayoutManager
{
private Dictionary<string, Dictionary<string, object>> _mainContentViews = new Dictionary<string, Dictionary<string, object>>();
public Dictionary<string, Dictionary<string, object>> MainContentViews
{
get { return _mainContentViews; }
set { _mainContentViews = value; }
}
public void AddMainContentView(string moduleKey, string viewKey, object view)
{
//_mainContentViews.Add(moduleKey, new Dictionary<string, object>(viewKey, view));
//_mainContentViews.Add(moduleKey, viewKey, view);
_mainContentViews.Add(moduleKey, ???);
}
...
}
答案 0 :(得分:5)
public void AddMainContentView(string moduleKey, string viewKey, object view)
{
Dictionary<string, object> viewDict = null;
if (!MainContentViews.TryGetValue(moduleKey, out viewDict)) {
viewDict = new Dictionary<string, object>();
MainContentViews.Add(moduleKey, viewDict);
}
if (viewDict.ContainsKey(viewKey)) {
viewDict[viewKey] = view;
} else {
viewDict.Add(viewKey, view);
}
}
答案 1 :(得分:1)
???可以填写:
new Dictionary<string, object> { {viewKey, view} }
答案 2 :(得分:1)
这会有效吗?
public void AddMainContentView(string moduleKey, string viewKey, object view)
{
if ( !_mainContentViews.ContainsKey(moduleKey))
{
Dictionary<string, object> newModule = new Dictionary<string, object>();
newModule.Add(viewKey, view);
_mainContentViews.Add(moduleKey, newModule);
}
}
答案 3 :(得分:0)
使用元组作为键(即没有嵌套字典,但只是合并键)并再次添加变得简单,或者您需要检查是否存在moduleKey,如果不是,则首先创建一个新的空字典。
如果可能的话,使用元组键而不是嵌套字典 - 然后唯一的问题就是唯一地识别模块的所有成员,如果你处理的合理的小集合只有几千个元素,那么你可以安全地蛮力。