List of generic Type

c#, generics

Solution

If all of your jobs are of same type (e.g. `Job<string>`) you can simply create a list of that type:

List<Job<string>> x = new List<Job<string>>();
x.Add(new Job<string>());

However, if you want to mix jobs of different types (e.g. `Job<string>` and `Job<int>`) in the same list, you'll have to create a non-generic base class or interface:

public abstract class Job 
{
    // add whatever common, non-generic members you need here
}

public class Job<T> : Job 
{
    // add generic members here
}

And then you can do:

List<Job> x = new List<Job>();
x.Add(new Job<string>());

If you wanted to get the type of a `Job` at run-time you can do this:

Type jobType = x[0].GetType();                       // Job<string>
Type paramType = jobType .GetGenericArguments()[0];  // string

Problem

I have a generic class and I want to create a list of it. and then at run time I get the type of the item Class ``` public class Job<T> { public int ID { get; set; } public Task<T> Task { get; set; } public TimeSpan Interval { get; set; } public bool Repeat { get; set; } public DateTimeOffset NextExecutionTime { get; set; } public Job<T> RunOnceAt(DateTimeOffset executionTime) { NextExecutionTime = executionTime; Repeat = false; return this; } } ``` What I want to achive ``` List<Job<T>> x = new List<Job<T>>(); public void Example() { //Adding a job x.Add(new Job<string>()); //The i want to retreive a job from the list and get it's type at run time } ```

Original source