Use new constructors that take microseconds.

Author: bgrainger

src/MySqlConnector/Core/BinaryRow.cs

@@ -191,7 +191,11 @@ private object ReadDateTime(ReadOnlySpan<byte> value)
 		try
 		{
 			return Connection.AllowZeroDateTime ? (object) new MySqlDateTime(year, month, day, hour, minute, second, microseconds) :
+#if NET7_0_OR_GREATER
+				new DateTime(year, month, day, hour, minute, second, microseconds / 1000, microseconds % 1000, Connection.DateTimeKind);
+#else
 				new DateTime(year, month, day, hour, minute, second, microseconds / 1000, Connection.DateTimeKind).AddTicks(microseconds % 1000 * 10);
+#endif
 		}
 		catch (Exception ex)
 		{
@@ -220,6 +224,10 @@ private static TimeSpan ReadTimeSpan(ReadOnlySpan<byte> value)
 			microseconds = -microseconds;
 		}
 
+#if NET7_0_OR_GREATER
+		return new TimeSpan(days, hours, minutes, seconds, microseconds / 1000, microseconds % 1000);
+#else
 		return new TimeSpan(days, hours, minutes, seconds) + TimeSpan.FromTicks(microseconds * 10);
+#endif
 	}
 }

src/MySqlConnector/Core/Row.cs

@@ -545,7 +545,11 @@ protected object ParseDateTime(ReadOnlySpan<byte> value)
 		try
 		{
 			return Connection.AllowZeroDateTime ? (object) new MySqlDateTime(year, month, day, hour, minute, second, microseconds) :
+#if NET7_0_OR_GREATER
+				new DateTime(year, month, day, hour, minute, second, microseconds / 1000, microseconds % 1000, Connection.DateTimeKind);
+#else
 				new DateTime(year, month, day, hour, minute, second, microseconds / 1000, Connection.DateTimeKind).AddTicks(microseconds % 1000 * 10);
+#endif
 		}
 		catch (Exception ex)
 		{

src/MySqlConnector/Utilities/Utility.cs

@@ -465,7 +465,11 @@ public static TimeSpan ParseTimeSpan(ReadOnlySpan<byte> value)
 			seconds = -seconds;
 			microseconds = -microseconds;
 		}
+#if NET7_0_OR_GREATER
+		return new TimeSpan(0, hours, minutes, seconds, microseconds / 1000, microseconds % 1000);
+#else
 		return new TimeSpan(0, hours, minutes, seconds, microseconds / 1000) + TimeSpan.FromTicks(microseconds % 1000 * 10);
+#endif
 
 		InvalidTimeSpan:
 		throw new FormatException("Couldn't interpret '{0}' as a valid TimeSpan".FormatInvariant(Encoding.UTF8.GetString(originalValue)));