linq查询列表< string>并将列表值匹配到字符串数组 [英] linq to query list<string> and match list value to string array

问题描述

我有一个List< string> whicha包含如下数据

在第0个索引它有如下数据

{CSVName = Name，SchemaName = adx_name，PrimaryAttribute = true}

&在第一个索引它有如下数据

{CSVName = Value，SchemaName = adx_value，PrimaryAttribute =}



i有一个String []数组其中包含以下价值

在第0个索引

名称

在第1个索引

Value



现在我想写一个查询来匹配string []数组值和list< string>

并检查主属性列表< string>设置为true或者不是

如果是真的那么我需要将该行的模式名称分配给某个变量



例如



在我的例子之上

{CSVName = Name，SchemaName = adx_name，PrimaryAttribute = true}



primaryattribute为真

因此此行的schemaname值将分配给任何变量



string valueofschemaname = SchemaName.value

输出将是：



valueofschemaname = adx_name;





请ans

解决方案

 类 A 
 {
 
  public   string  CSVName { get ;  set ; } 
  public   string 名称{ get ;  set ;} 
  public   string  SchemaName { get ;  set ;} 
  public   bool  PrimaryAttribute { get ;  set ;} 
 
} 

  string  [] arr =  new   string  [ 2 ]; 
 arr [ 0 ] =  名称 ; 
 arr [ 1 ] =   Value ; 
 
列表< A> list =  new 列表< A>（）; 
  string  valueofschemaname = list.Where（li = >  li.CSVName == arr [  0 ]&& li.PrimaryAttribute ==  true ）。First（）。SchemaName; 

I have one List<string> whicha contains data as follows
at 0 th index it has data as follows
{ CSVName = Name, SchemaName = adx_name, PrimaryAttribute = true }
& at first index it has data as follows
{ CSVName = Value, SchemaName = adx_value, PrimaryAttribute = }

i have one String[] array which contains following value
at 0th index
"Name"
At 1st index
"Value"

Now i want to write a query to match the string[] array values with list<string>
and to check if "Primary attribute" of list<string> is set to true or not
if it is true then i need to assign
schema name of that row to some variable

for example

in above my example
{ CSVName = Name, SchemaName = adx_name, PrimaryAttribute = true }

primaryattribute is true
so schemaname value of this row will be assign to any variable

string valueofschemaname=SchemaName.value
output will be :

valueofschemaname=adx_name ;


please ans

解决方案

class A
  {

      public string CSVName { get; set; }
      public string Name {get;set;}
      public string SchemaName  {get;set;}
      public bool PrimaryAttribute {get;set;}

  }

string[] arr = new string[2];
        arr[0] = "Name";
        arr[1] = "Value";

        List<A> list = new List<A>();
        string valueofschemaname = list.Where(li => li.CSVName == arr[0] && li.PrimaryAttribute == true).First().SchemaName ;

这篇关于linq查询列表&lt; string&gt;并将列表值匹配到字符串数组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！