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Try this<br />
<br />
static int weekOfYear(DateTime dt)<br />
{<br />
&nbsp; &nbsp; &nbsp;return (int)((int)(dt.DayOfYear + DateTime.ParseExact(dt.Yea<wbr />r.ToString<wbr />(), &quot;yyyy&quot;, null).DayOfWeek) / 7 + 1); <br />
}<br />
<br />
Week is from Sunday to Saturday.<br />
<br />

</div>


Try this

static int weekOfYear(DateTime dt)
{
     return (int)((int)(dt.DayOfYear + DateTime.ParseExact(dt.Year.ToString(), "yyyy", null).DayOfWeek) / 7 + 1);
}

Week is from Sunday to Saturday.



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<div class="content wysiwyg-content">
I am trying to find a simple way to get the week number for a year, given a data in the format dd/mm/yyyy (e.g. 07/01/2006). The year will not necessarily be the curent year, it could be a past or future year. (This is what's giving me the problem).<br />
<br />
Thanks!<br />
<br />

</div>
</div>


I am trying to find a simple way to get the week number for a year, given a data in the format dd/mm/yyyy (e.g. 07/01/2006). The year will not necessarily be the curent year, it could be a past or future year. (This is what's giving me the problem).

Thanks!



Getting the Week Number for the Year Given a Date

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).