環境：蘋果系統 

開發工具：monodevelop xcode

開發語言：c#

疑問：如何在新建的monotouch空專案中 執行後彈出指定的xib窗體

解答:

      1、首先新增新檔案，選擇ipad/iphone view controller，命名為mainwindows

      2、在mainwindows中寫入如下程式碼（使用UITableView顯示分組資料,格式化程式碼快捷鍵Ctrl+i）：

  1 using System.Linq;
  2 using System;
  3 using System.Drawing;
  4
 
 using System.Globalization;
  5 using System.Collections.Generic;
  6 using MonoTouch.Foundation;
  7 using MonoTouch.UIKit;
  8 
  9 namespace tables03s {
 10     
 11     struct Element
 12     {
 13         public string Number{get;set;}
 14         public string Name{get;set;}
 15         public
 
 string Symbol{get;set;}
 16         public string Family{get;set;}
 17         public string StartsWith{get{return Name.Substring(0,1);}}
 18     }
 19     public partial class mainWindows : UIViewController {
 20         private List<Element> elements;
 21         public mainWindows() : base
 
 ("mainWindows", null) {
 22             
 23             elements = new List<Element>
 24             {
 25                 new Element{Name="hydrogen",Number="1",Symbol="H",Family="Hydrogen"},
 26                 new Element{Name="helium",Number="2",Symbol="He",Family="Noble gas"},
 27                 new Element{Name="lithium",Number="3",Symbol="Li",Family="Alkali Metal"},
 28                 new Element{Name="beryllium",Number="4",Symbol="Be",Family="Alkaline Earth"},
 29                 new Element{Name="boron",Number="5",Symbol="B",Family="Boron"},
 30                 new Element{Name="carbon",Number="6",Symbol="C",Family="Carbon"},
 31                 new Element{Name="nitrogen",Number="7",Symbol="N",Family="Pnictide"},
 32                 new Element{Name="oxygen",Number="8",Symbol="O",Family="Chalcogen"},
 33                 new Element{Name="fluorine",Number="9",Symbol="F",Family="Halogen"},
 34                 new Element{Name="neon",Number="10",Symbol="Ne",Family="Noble gas"},
 35                 new Element{Name="sodium",Number="11",Symbol="Na",Family="Alkali Metal"},
 36                 new Element{Name="magnesium",Number="12",Symbol="Mg",Family="Alkaline Earth"},
 37                 new Element{Name="aluminum",Number="13",Symbol="Al",Family="Boron"},
 38                 new Element{Name="silicon",Number="14",Symbol="Si",Family="Boron"}
 39                 
 40             };
 41             
 42             
 43         }
 44         
 45         
 46         public override void DidReceiveMemoryWarning() {
 47             // Releases the view if it doesn't have a superview.
 48             base.DidReceiveMemoryWarning();
 49             
 50             // Release any cached data, images, etc that aren't in use.
 51         }
 52         
 53         public override void ViewDidLoad() {
 54             base.ViewDidLoad();
 55             tableViews.Source=new MyTableViewSource(elements);
 56             //    tableViews.Source=new MyTableViewSource(elements);
 57             // Perform any additional setup after loading the view, typically from a nib.
 58         }
 59         
 60         public override void ViewDidUnload() {
 61             base.ViewDidUnload();
 62             
 63             // Clear any references to subviews of the main view in order to
 64             // allow the Garbage Collector to collect them sooner.
 65             //
 66             // e.g. myOutlet.Dispose (); myOutlet = null;
 67             
 68             ReleaseDesignerOutlets();
 69         }
 70         
 71         public override bool ShouldAutorotateToInterfaceOrientation(UIInterfaceOrientation toInterfaceOrientation) {
 72             // Return true for supported orientations
 73             return (toInterfaceOrientation != UIInterfaceOrientation.PortraitUpsideDown);
 74         }
 75         
 76         private class MyTableViewSource:UITableViewSource
 77         {
 78             private  List<string> sectionTitles;
 79             private SortedDictionary<int,List<Element>> sectionElements
 80                 =new SortedDictionary<int, List<Element>>();
 81             public MyTableViewSource(List<Element> list)
 82             {
 83                 sectionTitles=(from c in list select c.StartsWith).Distinct().ToList();
 84                 sectionTitles.Sort();
 85                 foreach(var element in list)
 86                 {
 87                     int sectionNum=sectionTitles.IndexOf(element.StartsWith);
 88                     if(sectionElements.ContainsKey(sectionNum))
 89                     {
 90                         sectionElements[sectionNum].Add(element);
 91                     }
 92                     else
 93                     {
 94                         sectionElements.Add(sectionNum,new List<Element>{element});
 95                     }
 96                     
 97                 }
 98                 
 99             }
100             public override int NumberOfSections(UITableView tableView) {
101                 return sectionTitles.Count;
102             }
103             public override string TitleForHeader(UITableView tableView, int section) {
104                 return sectionTitles[section];
105             }
106             public override string[] SectionIndexTitles(UITableView tableView) {
107                 return sectionTitles.ToArray();
108             }
109             public override int RowsInSection(UITableView tableview, int section) {
110                 return sectionElements[section].Count;
111             }
112             public override UITableViewCell GetCell(UITableView tableView, NSIndexPath indexPath) {
113                 
114                 string kCellIdetifier="mycell";
115                 UITableViewCell cell=tableView.DequeueReusableCell(kCellIdetifier);
116                 if(cell==null)
117                 {
118                     cell=new UITableViewCell(UITableViewCellStyle.Value2,kCellIdetifier);
119                 }
120                 Element display=sectionElements[indexPath.Section][indexPath.Row];
121                 cell.TextLabel.Text=display.Symbol;
122                 cell.DetailTextLabel.Text=display.Name;
123                 cell.DetailTextLabel.Font=UIFont.SystemFontOfSize(20);
124                 return cell;
125             }
126             public override void RowSelected(UITableView tableView, NSIndexPath indexPath) {
127                 Element display=sectionElements[indexPath.Section][indexPath.Row];
128                 ShowAlert("RowSelected","You selected "+display.Name);
129                 tableView.DeselectRow(indexPath,true);
130             }
131             public void ShowAlert(string title,string message)
132             {
133                 using (var alert=new UIAlertView(title,message,null,"OK",null))
134                 {
135                     alert.Show();
136                 }
137             }
138         }
139     }
140     
141 }

      3、在AppDelegate中寫入如下程式碼，主要呼叫了window的RootViewController屬性：

 1 public partial class AppDelegate : UIApplicationDelegate {
 2     // class-level declarations
 3     UIWindow window;
 4     mainWindows mainUiwindows;
 5     //
 6     // This method is invoked when the application has loaded and is ready to run. In this 
 7     // method you should instantiate the window, load the UI into it and then make the window
 8     // visible.
 9     //
10     // You have 17 seconds to return from this method, or iOS will terminate your application.
11     //
12     public override bool FinishedLaunching(UIApplication app, NSDictionary options) {
13         window = new UIWindow(UIScreen.MainScreen.Bounds);
14         mainUiwindows=new mainWindows();
15         window.RootViewController=mainUiwindows; //important
16         window.MakeKeyAndVisible();
17         return true;
18     }
19 }

      4、效果圖如下：