C# List 转 DataTable

版权声明：转载需注明出处 https://blog.csdn.net/w529409399/article/details/80134971

调用时传入参数  List<person> , 实体类person中的每个属性必须为公共属性，且必须含有{ get; set; } ，否则不能反射。

using System.Data;
using System.Reflection;

public static DataTable ToDataTable<T>(IEnumerable<T> collection)
        {
            PropertyInfo[] props = typeof(T).GetProperties();
            DataTable dt = new DataTable();
            dt.Columns.AddRange(props.Select(p => new DataColumn(p.Name, p.PropertyType)).ToArray());
            if (collection.Count() > 0)
            {
                for (int i = 0; i < collection.Count(); i++)
                {
                    ArrayList tempList = new ArrayList();
                    foreach (PropertyInfo pi in props)
                    {
                        object obj = pi.GetValue(collection.ElementAt(i), null);
                        tempList.Add(obj);
                    }
                    object[] array = tempList.ToArray();
                    dt.LoadDataRow(array, true);
                }
            }
            return dt;
        }

调用

List<person> persons= new List<person>();
DataTable dt = ToDataTable<person>(persons);