Var b=data_list. DataList. The Count ();
While (b!=0)
{
Var a=data_list. DataList. ToList () [0].
I in data_list foreach (var. The DataList. ToList ())
{
//var get_stock=_orderService. Get_erp_stock_list (new StockQueryRequest modity} {commodity=i.com, merchant_id);
If (i.com modity_name. Equals modity_name) (a.com)
{
Data_list. DataList. ToList (). The RemoveAt (1);

}
B=b - 1;
}
}

CodePudding user response:

Red part have a problem for certain,
Data_list. DataList. ToList () . The RemoveAt (1)

CodePudding user response:

//
//abstract:
//create System. Collections. Generic. List ` 1 from the System. Collections. Generic. IEnumerable ` 1,
//
//parameters:
//source:
//System. Collections, Generic IEnumerable ` 1 create System. Collections. ` Generic. List 1
//from,
//
//type parameters:
//TSource:
//the type of the elements in the source,
//
//return the result:
//a System. Collections. Generic. List ` 1, which contains the elements in the input sequence,
//
//exception:
//T: System. ArgumentNullException:
//source is null,
Public static List ToList (this IEnumerable The source);

ToList () will get a new collection, will not change the original collection

CodePudding user response:

I also think it is ToList () question but don't know how to change

CodePudding user response:

Total felling you go wrong...




Data_list DataList is a result set?

Is nothing more than you want to the result set to the selected?

That you directly use the expression to get a new result set.

CodePudding user response:

Data_list. DataList. ToList (). The RemoveAt (1); To data_list. DataList. ToList (). Remove (I);

CodePudding user response:

IList L=new List (a);
L=l.D istinct (.) ToList ();
Don't know what you structure this can go

CodePudding user response:

Data_list. DataList. Select (x=& gt; X.com modity_name! Modity_name)=a.com

CodePudding user response:

Don't delete list in foreach, use a for loop for (int=list. The count, i>=0; I++), reference
or Iterator.
https://www.cnblogs.com/huzi007/p/10483857.html

CodePudding user response:

Have very detailed answer # 1, 2,
Don't go into,

CodePudding user response:

Give you a look at the real, mainly tolist, operating data are different,
Creates a new generic collections

CodePudding user response:

refer to the eighth floor andy_wanhl response:

don't delete list in foreach, use a for loop for (int=list. The count, i>=0; I++), reference
or Iterator.
https://www.cnblogs.com/huzi007/p/10483857.html

Cattle you this code, the cattle b,