Xcopy not working from System.Diagnostics.Process.Start()

This one wasn't easy.

See http://social.msdn.microsoft.com/Forums/en-US/netfxbcl/thread/ab3c0cc7-83c2-4a86-9188-40588b7d1a52/

"This is a quirk of xcopy.exe. If you redirect the output, you have to redirect the input as well."

SQL 2008 - "Saving changes is not permitted."

On SQL 2008 Management Studio Icoudln't save the changes done on a table.

This seemed strange, but was easy to fix:

http://weblogs.asp.net/pabloperalta/archive/2008/09/23/sql-2008-quot-saving-changes-is-not-permitted-quot-error-message.aspx

Running dynamic javascript generated on the UpdatePanel partial postback

I found this great piece of code that allows a more or less generic way of running javascript generated during the processing of a partial postback within an UpdatePanel.

It runs all the script inside script tags with a certain ID.

http://www.31a2ba2a-b718-11dc-8314-0800200c9a66.com/2008/08/dynamic-javascript-in-update-panel_19.html?showComment=1240338420000#c118959118652221112

Stuck with static constructor exception

It took me quite some time to understand why I was getting allways the same exception on a static constructor. So this blog confirmed what I suspected. The exception is cached and thrown again:

http://weblogs.asp.net/avnerk/archive/2008/12/16/static-constructor-throws-the-same-exception-again-and-again.aspx

I found this with .NET2.0 I believe .NET 3.5 works differently since they added this to the documentation:

"If a static constructor throws an exception, the runtime will not invoke it a second time, and the type will remain uninitialized for the lifetime of the application domain in which your program is running"

Check if 2 dates belong to the same week

I found this post while looking for the solution to the problem in C#.

http://quickduck.com/blog/2008/11/03/reader-challenge/

I endded up using the code:

        public static bool InSameWeek(DateTime d1, DateTime d2)

        {

            DateTime beginningOfWeekDate1 = GetFirstDayOfWeek(d1);

            DateTime beginningOfWeekDate2 = GetFirstDayOfWeek(d2);

            return beginningOfWeekDate1 == beginningOfWeekDate2;

        }

        ///

        /// Considers monday to be the first day of week

        ///

        ///

        ///

        private static DateTime GetFirstDayOfWeek(DateTime d)

        {

            switch (d.DayOfWeek)

            {

                case DayOfWeek.Monday:

                    return d;

                case DayOfWeek.Tuesday:

                    return d.AddDays(-1);

                case DayOfWeek.Wednesday:

                    return d.AddDays(-2);

                case DayOfWeek.Thursday:

                    return d.AddDays(-3);

                case DayOfWeek.Friday:

                    return d.AddDays(-4);

                case DayOfWeek.Saturday:

                    return d.AddDays(-5);

                case DayOfWeek.Sunday:

                    return d.AddDays(-6);

                default:

                    throw new ApplicationException();

            }

        }

Equals on Javascript between different types

Equality with javascript between differetn types has it's pitfalls, for example between bool and string.
Fortunately there is the operator ===
'false' == '' -> true
'false' === '' -> false

See JavaScript pitfalls: null, false, undefined, NaN - MapbenderWiki

Return a result code from a batch file

How to return a result code (ERRORLEVEL) from a batch file.
exit /B 63
See Batch script return code : return, batch, code, script