根据反射获取属性信息并创建DataTable

Posted 2020-07-02 helloEveryBody0821

查看了一些方法之后，做了一些总结，此方法适用于传进的参数是List<T>类型，

但事先并不知道T的类型，T可以是自定义类型。

 1 public DataTable CreateDataTable(Object o)
 2         {
 3             DataTable dt = new DataTable();
 4             //DataColumn yearColumn = new DataColumn("Year", System.Type.GetType("System.String"));
 5             //DataColumn monthColumn = new DataColumn("Month", System.Type.GetType("System.String"));
 6             //dt.Columns.AddRange(new DataColumn[] { yearColumn, monthColumn});
 7             //foreach (DateModel date in dlist)
 8             //{
 9             //    DataRow newRow = dt.NewRow();
10             //    newRow["Year"] = date.year;
11             //    newRow["Month"] = date.month;
12             //    dt.Rows.Add(newRow);
13             //}
14             //Type testType = typeof(DateModel);
15 
16             Type testType = o.GetType();
17             Type t = o.GetType().GetGenericArguments()[0];
18             //object genericList = CreateGeneric(typeof(List<>), o.GetType().GetGenericArguments()[0]);
19             //genericList.GetType().InvokeMember("Add", BindingFlags.Default | BindingFlags.InvokeMethod, null, genericList, new Object[] { o});
20             ////Type testType = typeof(CreateDataTableUtil);
21             //Assembly assembly = testType.Assembly;
22             //string name = assembly.FullName;//name = "WindowsFormsApplication6, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"
23 
24             //Type[] typeList = assembly.GetTypes(); // 获取类型
25             //                                       // 针对每个类型获取详细信息
26            
27             PropertyInfo[] propertys = t.GetProperties();
28             
29             foreach (PropertyInfo pro in propertys)
30             {
31                 DataColumn dc = new DataColumn();
32                 dc = dt.Columns.Add(pro.Name, System.Type.GetType(pro.PropertyType.FullName));
33             }
34             IEnumerable list = o as IEnumerable;
35             foreach (Object obj in list)
36             {
37                 DataRow newRow = dt.NewRow();
38                 for (int i = 0; i < propertys.Count(); i++)
39                 {
40                     newRow[dt.Columns[i]] = obj.GetType().GetProperty(dt.Columns[i].ToString()).GetValue(obj);
41                 }
42                 
43                 dt.Rows.Add(newRow);
44             }
45             return dt;
46         //}
47         //public static object CreateGeneric(Type generic, Type innerType, params object[] args)
48         //{
49         //    Type specificType = generic.MakeGenericType(new System.Type[] { innerType });
50         //    return Activator.CreateInstance(specificType, args);
51         }
52     }