public static T GetEntity<T>(DataTable table) where T : new()
{
T entity = new T();
foreach (DataRow row in table.Rows)
{
foreach (var item in entity.GetType().GetProperties())
{
if (row.Table.Columns.Contains(item.Name))
{
if (DBNull.Value != row[item.Name])
{
item.SetValue(entity, Convert.ChangeType(row[item.Name], item.PropertyType), null);
}
}
}
}
return entity;
}
public static IList<T> GetEntities<T>(DataTable table) where T : new()
{
IList<T> entities = new List<T>();
foreach (DataRow row in table.Rows)
{
T entity = new T();
foreach (var item in entity.GetType().GetProperties())
{
item.SetValue(entity, Convert.ChangeType(row[item.Name], item.PropertyType), null);
}
entities.Add(entity);
}
return entities;
}
/// <summary>
/// 实体类转换成DataTable
/// </summary>
/// <param name="modelList">实体类列表</param>
/// <returns></returns>
public DataTable GetDataTable(List<T> modelList)
{
if (modelList == null || modelList.Count == 0)
{
return null;
}
DataTable dt = CreateData(modelList[0]);
foreach(T model in modelList)
{
DataRow dataRow = dt.NewRow();
foreach (PropertyInfo propertyInfo in typeof(T).GetProperties())
{
dataRow[propertyInfo.Name] = propertyInfo.GetValue(model, null);
}
dt.Rows.Add(dataRow);
}
return dt;
}
/// <summary>
/// 根据实体类得到表结构
/// </summary>
/// <param name="model">实体类</param>
/// <returns></returns>
private DataTable CreateDataTable(T model)
{
DataTable dataTable = new DataTable(typeof (T).Name);
foreach (PropertyInfo propertyInfo in typeof(T).GetProperties())
{
dataTable.Columns.Add(new DataColumn(propertyInfo.Name, propertyInfo.PropertyType));
}
return dataTable;
}