...and easy to use, as are console.time(), console.profile(), and performance.now(). Chrome also gives you a timeline view which can show you what is killing your frame rate, where the user might be waiting, etc. Finding documentation for all these tools is really easy, you don't need an SO answer for...

... get the actual Hours, Minutes and Seconds. DateTime startTime = DateTime.Now; DateTime endTime = DateTime.Now.AddSeconds( 75 ); TimeSpan span = endTime.Subtract ( startTime ); Console.WriteLine( "Time Difference (seconds): " + span.Seconds ); Console.WriteLine( "Time Difference (minutes): " ...

... Protected overridable functions Clipboard Sorting Virtual Mode Acknowledgements General appearance and features Files Construction Number of rows and columns Sizing and position functions Reordering rows and columns Cell Editing and Validation Structu...

... Protected overridable functions Clipboard Sorting Virtual Mode Acknowledgements General appearance and features Files Construction Number of rows and columns Sizing and position functions Reordering rows and columns Cell Editing and Validation Structu...

... Protected overridable functions Clipboard Sorting Virtual Mode Acknowledgements General appearance and features Files Construction Number of rows and columns Sizing and position functions Reordering rows and columns Cell Editing and Validation Structu...

... Protected overridable functions Clipboard Sorting Virtual Mode Acknowledgements General appearance and features Files Construction Number of rows and columns Sizing and position functions Reordering rows and columns Cell Editing and Validation Structu...

... Protected overridable functions Clipboard Sorting Virtual Mode Acknowledgements General appearance and features Files Construction Number of rows and columns Sizing and position functions Reordering rows and columns Cell Editing and Validation Structu...

... Solutions until now only deal with lists, and most are copying the list. In my experience a lot of times that isn't possible. Also, they don't deal with the fact that you can have repeated elements in the list. The title of your question s...

... Protected overridable functions Clipboard Sorting Virtual Mode Acknowledgements General appearance and features Files Construction Number of rows and columns Sizing and position functions Reordering rows and columns Cell Editing and Validation Structu...

... Protected overridable functions Clipboard Sorting Virtual Mode Acknowledgements General appearance and features Files Construction Number of rows and columns Sizing and position functions Reordering rows and columns Cell Editing and Validation Structu...