public class Total{
public DataTable ListToDataTable<T>(IEnumerable<T> collection, DataTable dt)
{
var props = typeof(T).GetProperties();
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;
}
public class ModelConvertHelper<T> where T : new()
{
public List<T> ConvertToModel(DataTable dt)
{
Type type = typeof(T); // 获得此模型的类型
string tempName = "";
List<T> ts = new List<T>();
foreach (DataRow dr in dt.Rows)
{
T t = new T();
PropertyInfo[] propertys = t.GetType().GetProperties(); // 获得此模型的公共属性
foreach (PropertyInfo pi in propertys)
{
tempName = pi.Name; // 检查DataTable是否包含此列
if (dt.Columns.Contains(tempName))
{
if (!pi.CanWrite) continue;// 判断此属性是否有Setter
object value = dr[tempName];
if (value != DBNull.Value)
pi.SetValue(t, value, null);
}
}
ts.Add(t);
}
return ts;
}
}
}
调用：public actionresult test(){
Total total=new Total();
iss = db.dbIssuseBackup.ToList();//连接数据库得到List集合
DataTable dt = new DataTable();
total.ListToDataTable(iss, dt);//list转化为Datatable
//dt.Columns.Remove("ID"); dt.Columns.Remove("SaveTime");//可以将dt某栏位移除
Total.ModelConvertHelper<IssueLogBackup> aaaf = new Total.ModelConvertHelper<IssueLogBackup>();//datatable转化为List
aaaf.ConvertToModel(dt);//IssueLogBackup为想要的Model
}