简单快速开发C\S架构程序用最简单的不分层最快的效率
用通用权限管理系统组件开发一个简易的日积月累功能的代码实现，运行效果如下效果，很多通用的小功能系统组件自动都实现了，那开发应用程序会变得又快又简单了。 具体代码参考如下： 1 // -------------------------------------------------------------------- 2 // All Rights Reserved , Copyright (C) 2012 , Hairihan TECH, Ltd. 3 // -------------------------------------------------------------------- 4 5 usingSystem; 6 usingSystem.Data; 7 usingSystem.Windows.Forms; 8 9 namespaceDotNet.WinForm 10{ 11 usingDotNet.Business; 12 usingDotNet.Utilities; 13 14 /// <summary> 15 /// FrmKnowledge.cs 16 /// 日积月累 17 /// 18 /// 修改记录 19 /// 20 /// 2012.09.03 版本：1.0 JiRiGaLa 修改功能页面编写。 21 /// 22 /// 版本：1.0 23 /// 24 /// <author> 25 /// <name> JiRiGaLa </name> 26 /// <date> 2012.09.03 </date> 27 /// </author> 28 /// </summary> 29 public partial classFrmKnowledge : BaseForm 30 { 31 publicFrmKnowledge() 32 { 33 InitializeComponent(); 34 } 35 36 /// <summary> 37 /// 日积月累的知识库 38 /// </summary> 39 DataTable dtKnowledge = null; 40 41 /// <summary> 42 /// 当前显示第几条 43 /// </summary> 44 intCurrentIndex = 0; 45 46 #regionpublic override void ShowEntity() 显示内容 47 /// <summary> 48 /// 显示内容 49 /// </summary> 50 public override voidShowEntity() 51 { 52 // 显示信息 53 BaseCommentEntity commentEntity = newBaseCommentEntity(dtKnowledge.Rows[ this.CurrentIndex]); 54 this.txtContents.Text = commentEntity.Contents; 55 } 56 #endregion 57 58 public override voidSetControlState() 59 { 60 if( this.dtKnowledge != null&& this.dtKnowledge.Rows.Count > 0) 61 { 62 this.btnNext.Enabled = true; 63 if( this.CurrentIndex == this.dtKnowledge.Rows.Count - 1) 64 { 65 this.btnNext.Enabled = false; 66 } 67 this.btnPrevious.Enabled = true; 68 if( this.CurrentIndex == 0) 69 { 70 this.btnPrevious.Enabled = false; 71 } 72 } 73 } 74 75 #regionpublic override void FormOnLoad() 加载窗体 76 /// <summary> 77 /// 加载窗体 78 /// </summary> 79 public override voidFormOnLoad() 80 { 81 // 获取数据 82 SQLBuilder sqlBuilder = newSQLBuilder( this.UserCenterDbHelper); 83 sqlBuilder.BeginSelect( " BaseKnowledge "); 84 // 只获取前200个数据就可以了，减小网络传递数据的网络带宽。 85 sqlBuilder.SelectTop( 200); 86 if(! string.IsNullOrEmpty( this.EntityId)) 87 { 88 sqlBuilder.SetWhere(BaseCommentEntity.FieldId, this.EntityId); 89 } 90 // 这里是为了每次显示的数据都是乱序的，数据测循序是被打乱的。 91 sqlBuilder.SetOrderBy( " NEWID() "); 92 dtKnowledge = sqlBuilder.EndSelect(); 93 if(dtKnowledge.Rows.Count > 1) 94 { 95 this.CurrentIndex = newRandom().Next( 0, dtKnowledge.Rows.Count - 1); 96 } 97 // 显示实体 98 this.ShowEntity(); 99 100 // 显示日积月累 101 stringshowKnowledge = DotNetService.Instance.ParameterService.GetParameter(BaseSystemInfo.UserInfo, " User ", " ShowKnowledg ", " Show "); 102 if(! string.IsNullOrEmpty(showKnowledge)) 103 { 104 this.chkShowKnowledge.Checked = showKnowledge.Equals( true.ToString()); 105 } 106 } 107 #endregion 108 109 private voidchkShowKnowledge_CheckedChanged( objectsender, EventArgs e) 110 { 111 if( this.FormLoaded) 112 { 113 DotNetService.Instance.ParameterService.SetParameter(BaseSystemInfo.UserInfo, " User ", " ShowKnowledg ", " Show ", this.chkShowKnowledge.Checked.ToString()); 114 } 115 } 116 117 private voidbtnPrevious_Click( objectsender, EventArgs e) 118 { 119 if( this.CurrentIndex > 0) 120 { 121 this.CurrentIndex--; 122 this.ShowEntity(); 123 } 124 this.SetControlState(); 125 } 126 127 private voidbtnNext_Click( objectsender, EventArgs e) 128 { 129 if( this.CurrentIndex < this.dtKnowledge.Rows.Count - 1) 130 { 131 this.CurrentIndex++; 132 this.ShowEntity(); 133 } 134 this.SetControlState(); 135 } 136 137 private voidbtnColse_Click( objectsender, EventArgs e) 138 { 139 this.Close(); 140 } 141 } 142} 本文转自 jirigala 51CTO博客，原文链接：http://blog.51cto.com/2347979/1196196，如需转载请自行联系原作者
