C# Convert TimeSpan to Long

Convert a TimeSpan into to a long and back again with Ticks and FromTicks.

Convert TimeSpan, Long. TimeSpan and long are the same number of bytes. It is possible to store a TimeSpan as a long. This can be done with the Ticks property on TimeSpan. It is easier to persist a long in storage.Long

Example. In this program, we get two DateTimes. The first one is for "now." The second is for a day ago. Then we get the difference as a TimeSpan instance. Next, we convert that TimeSpan into a long Ticks.

Finally: We convert that long Ticks back into a TimeSpan, showing that you can round-trip longs and TimeSpans.

C# program that converts TimeSpan to long using System; class Program { static void Main() { // Difference between today and yesterday. DateTime yesterday = DateTime.Now.Subtract(TimeSpan.FromDays(1)); DateTime now = DateTime.Now; TimeSpan diff = now.Subtract(yesterday); // TimeSpan can be represented as a long [ticks]. long ticks = diff.Ticks; // You can convert a long [ticks] back into TimeSpan. TimeSpan ts = TimeSpan.FromTicks(ticks); // Display. Console.WriteLine(ts); // Note: long and TimeSpan are the same number of bytes [8]. unsafe { Console.WriteLine(sizeof(long)); Console.WriteLine(sizeof(TimeSpan)); } } } Output 1.00:00:00.0010000 8 8

Byte count. In the unsafe context, the program shows that a long is 8 bytes and a TimeSpan is also 8 bytes. Therefore, it is logical for one to fit in the other. It may be easier to write a long to a file or a database.SizeofTimeSpan

Summary. We saw how it is possible to convert from a TimeSpan and a long using the Ticks property and also the FromTicks method. By providing a long representation, the TimeSpan becomes more useful for external systems.

Because: External systems often support simple numeric types better than struct types.

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