How do I convert int values to datetime

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C#

I would like to be able to convert hours and minutes into this format hh:mm using C# DateTime library or TimeSpan (if possible).

For Example, if input for hours is 23 and input for minutes is 50, Output should be 23:50;
if input for hours is 25 and input for minutes is 60 output should be 02:00;
if input for hours is -1 and input for minutes is 0 output should be 23:00;

If it is possible, i would like this to be accomplished by modifying the code I provide below as little as possible.

Hours and Minutes must be read only properties as I have it below.

Thank You in Advance!

What I have tried:

public struct Time
{
    public Time(int hours, int minutes)
    {
        this.Hours = hours;
        this.Minutes = minutes;
    }

    public int Hours { get; }

    public int Minutes { get; }

    public override string ToString()
    {
        int initialTime = 0;
        return initialTime.(this.Hours).AddMinutes(this.Minutes).DateTime.ToString("t", CultureInfo.InvariantCulture);
    }

    public void Deconstruct(out int hours, out int minutes)
    {
        hours = this.Hours;
        minutes = this.Minutes;
    }
}