/// <summary>
/// 更新指定字段
/// </summary>
/// <param name="item">实体对象</param>
/// <param name="paramField">字段</param>
public void UpdateField(TEntity item, params string[] paramField)
{
using (DBContext <TEntity> context = new DBContext <TEntity>())
{
try
{
ObjectContext dbcontext = ((IObjectContextAdapter)context).ObjectContext;
context.Set <TEntity>().Attach(item);
ObjectStateEntry stateEntry = dbcontext.ObjectStateManager.GetObjectStateEntry(item);
foreach (string field in paramField)
{
stateEntry.SetModifiedProperty(field);
}
stateEntry.SetModified();
dbcontext.SaveChanges();
}
catch (DbEntityValidationException ex)
{
throw ex;
}
}
}