1：泛型
http://msdn.microsoft.com/zh-cn/library/system.collections.generic(VS.80).aspx
// type parameter T in angle brackets
public class GenericList<T> {
// The nested class is also generic on T private
class Node {
// T used in non-generic constructor public Node(T t) { next =
null; data = t; }
private Node next; public Node Next {
get { return next; }
set { next = value; } }
// T as private member data type private T data;
// T as return type of property
public T Data { get {
return data; }
set { data = value; } } } private Node head;
// constructor public GenericList() { head =
null; } // T as method parameter type:
public void AddHead(T t) { Node n =
new Node(t); n.Next = head; head = n; }
public IEnumerator<T> GetEnumerator() { Node current = head;
while (current != null) { yield
return current.Data; current = current.Next; } } } ——————————————————————
class TestGenericList {
static void Main() {
// int is the type argument GenericList<int> list =
new GenericList<int>();
for (int x = 0; x < 10; x++) { list.AddHead(x); }
foreach (int i
in list) { System.Console.Write(i +
" "); } System.Console.WriteLine("/nDone"); } }
下面涉及到了反射！！！
public virtual object getValue(T t, string valueName) { object ret=default(object); System.Reflection.PropertyInfo property = t.GetType().GetProperty(valueName); if (property == null)
return null; ret=t.GetType().InvokeMember(valueName,System.Reflection.BindingFlags.GetProperty,null,t,new object[]{}); return ret; }
public virtual void setValue(T t, string valueName,string val) { System.Reflection.PropertyInfo property = t.GetType().GetProperty(valueName); if (property == null) return;
val = "001"; t.GetType().InvokeMember(valueName, System.Reflection.BindingFlags.SetProperty, null, t, new object[] { val }); }
public virtual object getValue(T t, string valueName) { object ret = default(object); System.Reflection.MemberInfo[] member = t.GetType().GetMember(valueName); if (member == null)
return null; ret = t.GetType().InvokeMember(valueName, System.Reflection.BindingFlags.GetField, null, t, new object[] { }); return ret; }
public virtual void setValue(T t, string valueName, string val) { System.Reflection.MemberInfo[] member = t.GetType().GetMember(valueName); if (member == null) return;
t.GetType().InvokeMember(valueName, System.Reflection.BindingFlags.SetField, null, t, new object[] { val }); }
2：？与？？
*变量定义中含有一个问号，意思是这个数据类型是NullAble类型的。
*变量定义中含有两个问号，意思是取所赋值??左边的，如果左边为null，取所赋值??右边的。
cred.adaptorName = WebConfigurationManager.AppSettings["LDAPAdaptor"] ?? "Domestic";
3：public ItemMapping(Control target, String boundproperty, String targetproperty) : this(target, boundproperty, targetproperty, null, null)这里的：表示继承，只能用于构造函数。 { }
public ItemMapping(Control target, String boundproperty):this(target, boundproperty,null,null,null) {这里的：表示继承，只能用于构造函数。 } public ItemMapping(Control target, String boundproperty, String targetproperty, String format, ICustomFormatter
formatter) { if (target == null) throw new ArgumentNullException("target"); if (boundproperty == null) throw new ArgumentNullException("boundproperty");
this.mTarget = target; this.mBound = boundproperty; this.mTgtProp = targetproperty; this.mFormat = format; this.mFormatter = formatter; }
4：string.Format("Service
Url:{0}", “aaabbbccc”)
相当于："Service Url:aaabbbccc"
5：
<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional"> <triggers> <asp:AsyncPostBackTrigger ControlID="RadioButtonList1" EventName="SelectedIndexChanged"></asp:AsyncPostBackTrigger> <asp:AsyncPostBackTrigger
ControlID="Search1" EventName="Click"></asp:AsyncPostBackTrigger> <asp:AsyncPostBackTrigger ControlID="Search" EventName="Click"></asp:AsyncPostBackTrigger> </triggers> </asp:UpdatePanel>
微软自带的ajax控件：Ajax Extensions。把你所需要异步update的区域用updatepanel包起来，然后设置哪些trigger可以影响这个panel。另外还需要ScriptManager这个控件。
注意;先创建一个Ajax Website（装AJAX时会装上ScriptManager的）
6：if (lst == null) throw new ArgumentNullException("lst"); throw,哈哈！