var persons = new ObservableCollection<Person>();
var table = new DataTable("Persons");
var nameCol = new DataColumn("name") {DataType = typeof (string), AllowDBNull = true};
table.Columns.Add(nameCol);
var ageCol = new DataColumn("age") {DataType = typeof (int), AllowDBNull = false};
table.Columns.Add(ageCol);
persons.ToList().ForEach(p =>
{
var row = table.NewRow();
row.SetField(nameCol, p.Name);
row.SetField(ageCol, p.Age);
table.Rows.Add(row);
});
public DataTable ToDataTable<T>(List<T> items)
{
var tb = new DataTable(typeof(T).Name);
PropertyInfo[] props = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);
foreach (PropertyInfo prop in props)
{
Type t = GetCoreType(prop.PropertyType);
tb.Columns.Add(prop.Name, t);
}
foreach (T item in items)
{
var values = new object[props.Length];
for (int i = 0; i < props.Length; i++)
{
values[i] = props[i].GetValue(item, null);
}
tb.Rows.Add(values);
} return tb;
}
public static bool IsNullable(Type t)
{
return !t.IsValueType || (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable<>));
}
public static Type GetCoreType(Type t)
{
if (t != null && IsNullable(t))
{
if (!t.IsValueType)
{
return t;
}
else
{
return Nullable.GetUnderlyingType(t);
}
}
else
{
return t;
}
}