将Ilist集合转化为DataTable,并向DataTable中添加一列赋值

　　　　/// <summary>
/// 将IList集合转化为DataTable
/// </summary>
/// <param name="list"></param>
/// <returns></returns>
public DataTable ToTagInfoDataTable(IList<GkOptim_AddEquipment> list)
{
DataTable result = new DataTable();
if (list.Count > 0)
{
PropertyInfo[] propertys = list[0].GetType().GetProperties();
foreach (PropertyInfo pi in propertys)
{
result.Columns.Add(pi.Name, pi.PropertyType);
}
for (int i = 0; i < list.Count; i++)
{
ArrayList tempList = new ArrayList();
foreach (PropertyInfo pi in propertys)
{
object obj = pi.GetValue(list[i], null);
tempList.Add(obj);
}
object[] array = tempList.ToArray();
result.LoadDataRow(array, true);
}

result.Columns.Add("RowNum", Type.GetType("System.Int32"));//向result里增加多一列
int RowsCount = result.Rows.Count;
for (int j = 0; j < RowsCount; j++)//为该列增加相应的数值
{
IList<GkOptim_AddEquipment> equipmentlist = new GKOptimalizeBLL.AddEquipment().GetEquipmentListByUnitEquOrgID(result.Rows[j]["EquOrgID"].ToString(), int.Parse(result.Rows[j]["Unit"].ToString()));
result.Rows[j]["RowNum"] =  equipmentlist.Count;
}
}
else
{
result.Columns.Add("Code");
result.Columns.Add("EquOrgID");
result.Columns.Add("EquName");
result.Columns.Add("EquVarName");
result.Columns.Add("EquTag");
result.Columns.Add("Unit");
result.Columns.Add("EquOrgName");
result.Columns.Add("IsUse");
result.Columns.Add("EquSchemeID");
result.Columns.Add("ByOrder");
result.Columns.Add("EquSchemeName");
result.Columns.Add("EquShortTag");
result.Columns.Add("RowNum");
}
return result;
}