I have a generic list of SharePoint list items (List employees)
The SharePoint list contains the two columns, "Employee Name" and "Employee Designation"
I want to get an object List which contains distinct "Employee Designation" column values.
How do I do this using LINQ?
This didnt work for me:
var designations = from SPListItem employee in employees
select new {Designation = employee["Employee Designation"].ToString().Distinct()};
If you are only retrieving the string value of that column, you can avoid writing an equality comparer by selecting a string (instead of an object containing a string property).
var designations = (from SPListItem employee in employees
select employee["Employee Designation"].ToString())
.Distinct()
.ToList();
You have to use the Distinct method on the sequence, and you will need to provide a custom implementation of IEqualityComparer<T>
, because of this you will need an explicit class for the object you are creating.
var designations = (from SPListItem employee in employees
select new
{
Designation = employee["Employee Designation"].ToString()
}).Distinct(comparer);
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