摘要：
1、需求场景：我需要把常量值转成属性名输出，需要用反射把相关的变量用Json或者DataSet结构化出来
2、困难点：
（1）怎么识别有效的变量，就单单获得常量，静态变量和普通变量忽略
（2）怎么获得对应的值
（3）类有继承关系，怎么把父类的变量也给输出
原文链接：
http://www.lookdaima.com/page/docItemDetail.html?id=84347696-7f1c-4bd4-ba7d-5d4429f87a48
界面效果：
相关代码：
1 using eKing.LdmWebUtil.Names; 2 using System; 3 using System.Collections.Generic; 4 using System.Data; 5 using System.Reflection; 6 7 public partial class WebForms_Adms_Blanks__Adms_Tools_LdmNameToCode_Default 8 : System.Web.UI.Page 9 { 10 11 /// <summary> 12 /// 13 /// </summary> 14 [Serializable] 15 public class InfoData 16 { 17 public InfoData() 18 { 19 } 20 21 #region TheName ~ 名称 22 23 /// <summary> 24 /// TheName ~ 名称 25 /// </summary> 26 protected string m_TheName = ""; 27 28 /// <summary> 29 /// TheName ~ 名称 30 /// </summary> 31 public string TheName 32 { 33 get 34 { 35 return m_TheName; 36 } 37 set 38 { 39 m_TheName = value; 40 } 41 } 42 43 #endregion TheName ~ 名称 44 45 46 #region TheValue ~ 值 47 48 /// <summary> 49 /// TheValue ~ 值 50 /// </summary> 51 protected string m_TheValue = ""; 52 53 /// <summary> 54 /// TheValue ~ 值 55 /// </summary> 56 public string TheValue 57 { 58 get 59 { 60 return m_TheValue; 61 } 62 set 63 { 64 m_TheValue = value; 65 } 66 } 67 68 #endregion TheValue ~ 值 69 70 #region ExceptionText ~ 异常提示 71 72 /// <summary> 73 /// ExceptionText ~ 异常提示 74 /// </summary> 75 protected string m_ExceptionText = ""; 76 77 /// <summary> 78 /// ExceptionText ~ 异常提示 79 /// </summary> 80 public string ExceptionText 81 { 82 get 83 { 84 return m_ExceptionText; 85 } 86 set 87 { 88 m_ExceptionText = value; 89 } 90 } 91 92 #endregion ExceptionText ~ 异常提示 93 94 } 95 96 /// <summary> 97 /// 98 /// </summary> 99 /// <param name="theList"></param> 100 /// <param name="theName"></param> 101 /// <returns></returns> 102 public InfoData InfoDataFind(List<InfoData> theList, string theName) 103 { 104 foreach (InfoData item in theList) 105 { 106 if (item.TheName == theName) 107 return item; 108 } 109 110 return null; 111 } 112 113 /// <summary> 114 /// 通过反射获得所有Field的常用字段 115 /// </summary> 116 /// <param name="theList"></param> 117 /// <param name="thisType"></param> 118 protected void ToResultByType(List<InfoData> theList, Type thisType) 119 { 120 121 FieldInfo[] fA = thisType.GetFields(); 122 123 124 Type typeString = typeof(string); 125 InfoData infoDataV = null; 126 object oValue = null; 127 128 foreach (FieldInfo fi in fA) 129 { 130 // 不是字符串类型 // 131 if (fi.FieldType != typeString) 132 continue; 133 134 // 不是常量 // 135 if (!fi.IsStatic) 136 continue; 137 138 if (!fi.IsLiteral) 139 continue; 140 141 infoDataV = InfoDataFind(theList, fi.Name); 142 143 if (infoDataV != null) 144 continue; 145 146 infoDataV = new InfoData(); 147 infoDataV.TheName = fi.Name; 148 149 try 150 { 151 oValue = fi.GetValue(null); 152 153 if (oValue == null) 154 infoDataV.TheValue = null; 155 else 156 infoDataV.TheValue = oValue.ToString(); 157 } 158 catch(Exception err) 159 { 160 infoDataV.ExceptionText = err.Message; 161 } 162 163 theList.Add(infoDataV); 164 } 165 166 167 } 168 169 /// <summary> 170 /// 通过反射获得逻辑类的常用值 171 /// </summary> 172 /// <returns></returns> 173 protected string ToResult(string outputType) 174 { 175 Type thisType = typeof(LdmName); 176 List<InfoData> theList = new List<InfoData>(); 177 178 while (true) 179 { 180 if (thisType == null) 181 break; 182 183 ToResultByType(theList, thisType); 184 185 thisType = thisType.BaseType; 186 } 187 188 189 if (outputType == "json") 190 { 191 return Newtonsoft.Json.JsonConvert.SerializeObject(theList); 192 } 193 194 DataSet ds = new DataSet(); 195 DataTable dt = new DataTable(); 196 197 ds.Tables.Add(dt); 198 199 dt.Columns.Add(new DataColumn("TheName")); 200 dt.Columns.Add(new DataColumn("TheValue")); 201 dt.Columns.Add(new DataColumn("ExceptionText")); 202 203 DataRow dr = null; 204 205 foreach (InfoData s in theList) 206 { 207 dr = dt.NewRow(); 208 dt.Rows.Add(dr); 209 210 dr["TheName"] = s.TheName; 211 dr["TheValue"] = s.TheValue; 212 dr["ExceptionText"] = s.ExceptionText; 213 } 214 215 return ds.GetXml(); 216 } 217 218 protected void Page_Load(object sender, EventArgs e) 219 { 220 221 } 222 223 protected void btn_DataSet_Click(object sender, EventArgs e) 224 { 225 txt_Result.Text = ToResult("ds"); 226 } 227 228 protected void btn_Json_Click(object sender, EventArgs e) 229 { 230 txt_Result.Text = ToResult("json"); 231 } 232 }
1 using System; 2 using System.Collections.Generic; 3 using System.Text; 4 using eKing.EkWeb.Names; 5 6 namespace eKing.LdmWebUtil.Names 7 { 8 /// <summary> 9 /// 10 /// </summary> 11 public class LdmName 12 : 13 EkWebConstName 14 { 15 public LdmName() 16 { 17 // 18 //TODO: 在此处添加构造函数逻辑 19 // 20 21 22 } 23 24 /// <summary> 25 /// 26 /// </summary> 27 public string one = "one"; 28 29 /// <summary> 30 /// 31 /// </summary> 32 public static string two = "two"; 33 34 /// <summary> 35 /// TheText 36 /// </summary> 37 public const string TheText = "TheText"; 38 39 /// <summary> 40 /// TheDescription 41 /// </summary> 42 public const string TheDescription = "TheDescription"; 43 44 45 46 } 47 }
1 using System; 2 using System.Collections.Generic; 3 4 using System.Text; 5 6 7 namespace eKing.EkWeb.Names 8 { 9 /// <summary> 10 /// 11 /// </summary> 12 public class EkWebConstName 13 { 14 /// <summary> 15 /// 16 /// </summary> 17 public EkWebConstName() 18 { 19 20 } 21 22 #region PmSlnSort_Id ~ 应用分类 23 24 /// <summary> 25 /// PmSlnSort_Id ~ 应用分类 26 /// </summary> 27 public const string PmSlnSort_Id = "PmSlnSort_Id"; 28 29 #endregion PmSlnSort_Id ~ 应用分类 30 31 32 #region PmBakData_Id ~ 备份记录 33 34 /// <summary> 35 /// PmBakData_Id ~ 备份记录 36 /// </summary> 37 public const string PmBakData_Id = "PmBakData_Id"; 38 39 #endregion PmBakData_Id ~ 备份记录 40 41 42 #region CommentShowFlag ~ 显示注释 43 44 /// <summary> 45 /// CommentShowFlag ~ 显示注释 46 /// </summary> 47 public const string CommentShowFlag = "CommentShowFlag"; 48 49 #endregion CommentShowFlag ~ 显示注释 50 51 52 } 53 54 }