使用linq查询获取动态属性名称 [英] Using linq query fetch dynamic property name

问题描述

地狱全部



i我正在使用

列表< ExpandoObject> 

但如果我们使用linq那时候我不是获得房产



我尝试过：

<预> var grdfeatchobjlist =（List< ExpandoObject>）grdproductitem.ItemsSource; 

 var getlist = grdfeatchobjlist.Select（x => x.GetType（）。GetProperty（batchId）== Txtbatchcode.Text.ToString（））; 

解决方案

如果在编译时知道属性名称，则将 ExpandoObject 强制转换为 dyanmic ，并直接访问该属性：

  var  getlist = grdfeatchobjlist.Select（（ dynamic  x）= >  x.batchId == Txtbatchcode.Text）; 

对于动态属性名称直到运行时才知道，将 ExpandoObject 强制转换为 IDictionary< string，object> ，然后使用索引器：

  var  getlist = grdfeatchobjlist.Select（（IDictionary< string，object> x）= >  x [  batchId] == Txtbatchcode.Text）; 

Hell All

i am using

List<ExpandoObject>

but if we use linq that time i am not getting property

What I have tried:

<pre>  var grdfeatchobjlist = (List<ExpandoObject>)grdproductitem.ItemsSource;

var getlist = grdfeatchobjlist.Select(x => x.GetType().GetProperty("batchId") == Txtbatchcode.Text.ToString());

解决方案

If the property name is known at compile time, cast the ExpandoObject to dyanmic, and access the property directly:

var getlist = grdfeatchobjlist.Select((dynamic x) => x.batchId == Txtbatchcode.Text);

For a dynamic property name which isn't known until runtime, cast the ExpandoObject to an IDictionary<string, object>, and use the indexer:

var getlist = grdfeatchobjlist.Select((IDictionary<string, object> x) => x["batchId"] == Txtbatchcode.Text);

这篇关于使用linq查询获取动态属性名称的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！