为什么某些对象属性UnaryExpression和其他MemberExpression?
希望使用lambda而不是字符串属性名称问题来回答我的Select a model属性的问题,希望将属性添加到集合中,如下所示: var props = new ExportPropertyInfoCollection<JobCard>(); props.Include(model => model.BusinessInstallNumber).Title("Install No").Width(64).KeepZeroPadding(true); props.Include(model => model.DeviceName).Title("Device").Width(70); props.Include(model => model.DateRequested).Title("Request Date").Format("{0:dd/MM/yyyy}").Width(83); 我在该Include方法中编写了以下代码: public class PropertyCollection<T> { public void Include(Expression<Func<T, object>> expression) { var memberExpression = expression.Body as MemberExpression; if (memberExpression != null) { var pes = new ExportPropertyInfoBuilder {Property = new ExportPropertyInfo …