1 /// <summary> 2 /// The data extension. 3 /// </summary> 4 public static class DataExtension 5 { 6 /// <summary> 7 /// ToList 8 /// </summary> 9 /// <typeparam name="T">T</typeparam> 10 /// <param name="reader">reader</param> 11 /// <returns>T</returns> 12 public static List<T> ToList<T>(this IDataReader reader) where T : class, new() 13 { 14 var result = new List<T>(); 15 16 DataTable dt = reader.GetSchemaTable(); 17 try 18 { 19 while (reader.Read()) 20 { 21 var t = new T(); 22 23 if (dt != null) 24 { 25 foreach (DataRow dr in dt.Rows) 26 { 27 // 当前列名&属性名 28 string columnName = dr[0].ToString(); 29 PropertyInfo pro = typeof(T).GetProperty(columnName); 30 31 if (pro == null) 32 { 33 continue; 34 } 35 36 if (!pro.CanWrite) 37 { 38 continue; 39 } 40 41 pro.SetValue(t, ConvertExtension.ConvertHelper(reader[columnName], pro.PropertyType), null); 42 } 43 } 44 45 result.Add(t); 46 } 47 } 48 catch (System.Exception ex) 49 { 50 throw ex; 51 } 52 finally 53 { 54 if (!reader.IsClosed) 55 { 56 reader.Dispose(); 57 reader.Close(); 58 } 59 } 60 61 return result; 62 } 63 64 /// <summary> 65 /// ToList 66 /// </summary> 67 /// <typeparam name="T">T</typeparam> 68 /// <param name="dt">dt</param> 69 /// <returns>T</returns> 70 public static List<T> ToList<T>(this DataTable dt) where T : class, new() 71 { 72 var result = new List<T>(); 73 foreach (DataRow dr in dt.Rows) 74 { 75 var t = new T(); 76 try 77 { 78 foreach (DataColumn column in dt.Columns) 79 { 80 // 当前列名&属性名 81 string columnName = column.ColumnName; 82 PropertyInfo pro = typeof(T).GetProperty(columnName); 83 84 if (pro == null) 85 { 86 continue; 87 } 88 89 if (!pro.CanWrite) 90 { 91 continue; 92 } 93 94 pro.SetValue(t, ConvertExtension.ConvertHelper(dr[columnName], pro.PropertyType), null); 95 } 96 } 97 catch (System.Exception ex) 98 { 99 throw ex; 100 } 101 102 result.Add(t); 103 } 104 105 return result; 106 } 107 108 /// <summary> 109 /// ToList 110 /// </summary> 111 /// <typeparam name="T">T</typeparam> 112 /// <param name="ds">ds</param> 113 /// <returns>T</returns> 114 public static List<T> ToList<T>(this DataSet ds) where T : class, new() 115 { 116 return ds.Tables[0].ToList<T>(); 117 } 118 119 /// <summary> 120 /// ToList 121 /// </summary> 122 /// <typeparam name="T">T</typeparam> 123 /// <param name="ds">ds</param> 124 /// <param name="dataTableIndex">dataTableIndex</param> 125 /// <returns>T</returns> 126 public static List<T> ToList<T>(this DataSet ds, int dataTableIndex) where T : class, new() 127 { 128 return ds.Tables[dataTableIndex].ToList<T>(); 129 } 130 131 /// <summary> 132 /// ToModel 133 /// </summary> 134 /// <typeparam name="T">T</typeparam> 135 /// <param name="reader">reader</param> 136 /// <returns>T</returns> 137 public static T ToModel<T>(this IDataReader reader) where T : class, new() 138 { 139 var t = new T(); 140 DataTable dt = reader.GetSchemaTable(); 141 try 142 { 143 while (reader.Read()) 144 { 145 if (dt != null) 146 { 147 foreach (DataRow dr in dt.Rows) 148 { 149 // 当前列名&属性名 150 string columnName = dr[0].ToString(); 151 PropertyInfo pro = typeof(T).GetProperty(columnName); 152 153 if (pro == null) 154 { 155 continue; 156 } 157 158 if (!pro.CanWrite) 159 { 160 continue; 161 } 162 163 pro.SetValue(t, ConvertExtension.ConvertHelper(reader[columnName], pro.PropertyType), null); 164 } 165 } 166 } 167 } 168 catch (System.Exception ex) 169 { 170 throw ex; 171 } 172 finally 173 { 174 if (!reader.IsClosed) 175 { 176 reader.Dispose(); 177 reader.Close(); 178 } 179 } 180 181 return t; 182 } 183 184 /// <summary> 185 /// ToModel 186 /// </summary> 187 /// <typeparam name="T">T</typeparam> 188 /// <param name="dt">dt</param> 189 /// <returns>T</returns> 190 public static T ToModel<T>(this DataTable dt) where T : class, new() 191 { 192 var t = new T(); 193 if (dt.Rows.Count <= 0) 194 { 195 return t; 196 } 197 198 try 199 { 200 foreach (DataColumn column in dt.Columns) 201 { 202 // 当前列名&属性名 203 string columnName = column.ColumnName; 204 PropertyInfo pro = typeof(T).GetProperty(columnName); 205 if (pro == null) 206 { 207 continue; 208 } 209 210 if (!pro.CanWrite) 211 { 212 continue; 213 } 214 215 pro.SetValue(t, ConvertExtension.ConvertHelper(dt.Rows[0][columnName], pro.PropertyType), null); 216 } 217 } 218 catch (System.Exception ex) 219 { 220 throw ex; 221 } 222 223 return t; 224 } 225 226 /// <summary> 227 /// ToModel 228 /// </summary> 229 /// <typeparam name="T">T</typeparam> 230 /// <param name="ds">ds</param> 231 /// <param name="dataTableIndex">dataTableIndex</param> 232 /// <returns>T</returns> 233 public static T ToModel<T>(this DataSet ds, int dataTableIndex = 0) where T : class, new() 234 { 235 return ds.Tables[0].ToModel<T>(); 236 } 237 }
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