public static class List2DataTable
{
#region "Convert Generic List to DataTable"
/// <summary>
/// Convert a List{T} to a DataTable.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="items"></param>
/// <returns></returns>
public static DataTable ConvertToDataTable<T>(this 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;
} /// <summary>
/// Determine of specified type is nullable
/// </summary>
/// <param name="t"></param>
/// <returns></returns>
public static bool IsNullable(Type t)
{
return !t.IsValueType || (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable<>));
} /// <summary>
/// Return underlying type if type is Nullable otherwise return the type.
/// </summary>
/// <param name="t"></param>
/// <returns></returns>
public static Type GetCoreType(Type t)
{
if (t != null && IsNullable(t))
{
if (!t.IsValueType)
{
return t;
}
else
{
return Nullable.GetUnderlyingType(t);
}
}
else
{
return t;
}
}
#endregion
}