OEA体验：查询面板
<div id="cnblogs_post_body">一、摘要在这里主要是写OEA设计方面的知识了。OEA 源码：OEA框架 2.9 Pre-Alpha 源码公布
可以到BloodyAngel的博客和中可以下到。虽然现在应经知道使用了，但是还是 需要了解框架相关知识运行机制，让我们更好的使用OEA进行开发
OEA提供了自定义模板机制。我们这里主要是 实现简单的 查询面板
二、本文大纲
a、摘要 。
b、远景 。
c、项目结构 。
d、OEA实现方法。
三、远景
圈圈里的就是我们要实现查询条件，这个条件也是比较通用的，我们只要做一次就可以在多个页面上使用这个功能了，爽吧，减少的重复劳动了。
http://images.cnblogs.com/cnblogs_com/luomingui/201204/201204261721132000.png
这个我们这里只用到了一个表的数据。
四、项目结构
http://images.cnblogs.com/cnblogs_com/luomingui/201204/201204261721145197.png
用到的主要的类 如下：
1:Charging.cs2:ChargingDateCriteria.cs 3:TimeSpanCriteria.cs五、OEA实现方法
<blockquote> 我们现在来看看他是如何实现的
1：第一步查询条件基础TimeSpanCriteria.cs
<div style="border-bottom: #4f81bd 1px solid; text-align: left; border-left: #4f81bd 1px solid; line-height: 18px; background-color: white; margin: 0px; width: 100%; font-family: 'Courier New','Consolas','Fixedsys','BitStream Vera Sans Mono', courier,monospace,serif; color: black; font-size: 12px; overflow: auto; border-top: #4f81bd 1px solid; border-right: #4f81bd 1px solid"> 1:[Serializable] 2:public abstract class TimeSpanCriteria : Criteria 3:{ 4: public TimeSpanCriteria() 5: { 6: this.TimeSpanType = TimeSpanType.LastMonth; 7: } 8: 9: public static readonly Property<TimeSpanType> TimeSpanTypeProperty = P<TimeSpanCriteria>.Register(e => e.TimeSpanType, new PropertyMetadata<TimeSpanType> 10: { 11: PropertyChangedCallBack = (o, e) => (o as TimeSpanCriteria).OnTimeSpanTypeChanged(e) 12: }); 13: public TimeSpanType TimeSpanType 14: { 15: get { return this.GetProperty(TimeSpanTypeProperty); } 16: set { this.SetProperty(TimeSpanTypeProperty, value); } 17: } 18: protected virtual void OnTimeSpanTypeChanged(ManagedPropertyChangedEventArgs<TimeSpanType> e) 19: { 20: var today = DateTime.Today; 21: switch (e.NewValue) 22: { 23: case TimeSpanType.Today: 24: this.From = this.To = today; 25: break; 26: case TimeSpanType.Week: 27: var dayOfWeek = (int)today.DayOfWeek; 28: if (dayOfWeek == 0) dayOfWeek = 7; 29: dayOfWeek--;//0-6 30: 31: var monday = today.AddDays(-dayOfWeek); 32: this.From = monday; 33: this.To = monday.AddDays(6); 34: break; 35: case TimeSpanType.Month: 36: this.From = new DateTime(today.Year, today.Month, 1); 37: this.To = new DateTime(today.Year, today.Month, DateTime.DaysInMonth(today.Year, today.Month)); 38: break; 39: case TimeSpanType.LastMonth: 40: this.From = today.AddDays(-30); 41: this.To = today; 42: break; 43: case TimeSpanType.Year: 44: this.From = new DateTime(today.Year, 1, 1); 45: this.To = new DateTime(today.Year, 12, DateTime.DaysInMonth(today.Year, 12)); 46: break; 47: case TimeSpanType.All: 48: this.From = new DateTime(1800, 1, 1); 49: this.To = new DateTime(9999, 12, 31); 50: break; 51: case TimeSpanType.Custom: 52: break; 53: default: 54: break; 55: } 56: var to = this.To; 57: this.To = to.Add(new TimeSpan(23, 59, 59)); 58: } 59: 60: public static readonly Property<DateTime> FromProperty = P<TimeSpanCriteria>.Register(e => e.From); 61: public DateTime From 62: { 63: get { return this.GetProperty(FromProperty); } 64: set { this.SetProperty(FromProperty, value); } 65: } 66: 67: public static readonly Property<DateTime> ToProperty = P<TimeSpanCriteria>.Register(e => e.To); 68: public DateTime To 69: { 70: get { return this.GetProperty(ToProperty); } 71: set { this.SetProperty(ToProperty, value); } 72: } 73:} 74:internal class TimeSpanCriteriaConfig : EntityConfig<TimeSpanCriteria> 75:{ 76: protected override void ConfigView() 77: { 78: View.DomainName("查é询ˉ条?件t"); 79: 80: //横á向ò显?示?查é询ˉ面?板?。￡ 81: //View.DetailAsHorizontal = true; 82: 83: using (View.OrderProperties()) 84: { 85: View.Property(TimeSpanCriteria.TimeSpanTypeProperty) 86: .HasLabel("入?库a日?期ú").ShowIn(ShowInWhere.Detail); 87: View.Property(TimeSpanCriteria.FromProperty) 88: .HasLabel("从ó").ShowInDetail(labelWidth: 30); 89: View.Property(TimeSpanCriteria.ToProperty) 90: .HasLabel("至á").ShowInDetail(labelWidth: 30); 91: } 92: } 93:} 94:public enum TimeSpanType 95:{ 96: [Label("自?定¨义?")] 97: Custom, 98: [Label("当±天ì")] 99: Today, 100: [Label("本?周ü")] 101: Week, 102: [Label("本?月?")] 103: Month, 104: [Label("最?近ü一?月?")] 105: LastMonth, 106: [Label("本?年ê")] 107: Year, 108: [Label("全?部?")] 109: All 110:} 111:
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