[API proposal]: add ProcessStartInfo constructor that accepts IEnumerable<string> arguments.

[tmds]

Background and motivation

Starting a process should be easy when you have an IEnumerable<string> with arguments.

This is true if you can use the static Process.Start overload that accepts an IEnumerable.

If you need to use ProcessStartInfo to make additional configuration, like redirecting the streams, there is no way to pass in the IEnumerable<string>.

Process.ArgumentList is a Collection<string>. Because it doesn't have an AddRange, the user needs to add a loop to add the arguments one-by-one.

API Proposal

A constructor can be added to ProcessStartInfo.

 ProcessStartInfo(string fileName, IEnumerable<string> arguments)

This is consistent with rest of the API of Process where IEnumerable<string> overloads were added to existing APIs that accepted string arguments.

API Usage

ProcessStartInfo psi = new("filename", GetArguments());

Alternative designs

Risks

[ghost]

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Issue Details

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 ProcessStartInfo(string fileName, IEnumerable<string> arguments)

was proposed in #371 (comment).

But the API was omitted after review: #371 (comment).

In the API review it is assumed, you can do AddRange with an existing IEnumerable.

ProcessStartInfo psi = new();
psi.ArgumentList.AddRange(args);

However Collection<T> doesn't have AddRange: #18087.

For consistency with Process.Start and improved usability it would be nice of ProcessStartInfo would also accept IEnumerable<string> arguments.

Using ProcessStartInfo is not niche. If you start command-line tools, often you want to redirect streams, and then you need a PSI.

cc @adamsitnik

Author:	tmds
Assignees:	-
Labels:	api-suggestion, area-System.Diagnostics.Process
Milestone:	-

[adamsitnik]

@tmds I am supportive of this idea. Could you please fill the official template?

[tmds]

I've applied the template.

[tmds]

@adamsitnik is this good for api-ready-for-review ?

[adamsitnik]

@tmds it's is, I've applied the label. Thanks!

[bartonjs]

Looks good as proposed.

namespace System.Diagnostics
{
    public partial class ProcessStartInfo
    {
        public ProcessStartInfo(string fileName, IEnumerable<string> arguments);
    }
}