IEnumerable to DataTable

public static DataTable ToDataTable(this IEnumerable ien)

{

DataTable dt = new DataTable();

foreach (object obj in ien)

{

Type t = obj.GetType();

PropertyInfo[] pis = t.GetProperties();

if (dt.Columns.Count == 0)

{

foreach (PropertyInfo pi in pis)

{

  

Type propType = pi.PropertyType;

                    // Is it a nullable type? Get the underlying type

                    if (propType.IsGenericType && propType.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))

                     

   propType = new System.ComponentModel.NullableConverter(propType).UnderlyingType;

                    dt.Columns.Add(pi.Name, propType);

}

}

DataRow dr = dt.NewRow();

foreach (PropertyInfo pi in pis)

{

object value = pi.GetValue(obj, null);

dr[pi.Name] = value;

}

dt.Rows.Add(dr);

}

return dt;

}