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Comapring Date in share point 2010 - problems using less than or greater than

Posted on 2013-01-07
Medium Priority
Last Modified: 2013-01-19
Sharepoint 2010, using Sharepoint Designer 2010. I am a admitted newbie to manual coding.

I inserted a empty Data View Web Part ( DVWP ) and linked it to a list. I displayed the title as the only column. I then added a "when" statement to compare the @Modified date to the @Created date. Based on the results I would add text after the title. The intent is to display "New" in a column if a entry in the list was created less than 7 days ago (as opposed to the OOTB 2 days), or display "update" of it was modifiedin the last 7 days. currently I am using just one When statement for testing.

This worked in 2007. I did some modfications in 2010, necessary to format the dates correctly, but even using the exact working I had in SP2007, I get the same behavior. Interestingly enough, all DVWP's migrated from SP2007 with this code still work.

Issue: If I use Equal ( "=" ) or not equal ("!=") operators, it works as expected. If I use any type of less than or greater than operator'' it does not work. Examples: ">", "<"  , ">=", and  "<=". No error is thrown, it just displays nothing. Below is the code I am using.

On the line following
<xsl:param name="dvt_apos">&apos;</xsl:param>

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I inserted
<xsl:param name="Today" />

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This automatically generated
<ParameterBinding Name="Today" Location="CAMLVariable" DefaultValue="CurrentDate"/>

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in the DVWP

snippet of the code I used for the WHEN statement

<ul><li><a href="{@FileRef}"><xsl:value-of select="@Title" /></a>
		<xsl:when test="translate(substring-before(@Modified,' '),'-','') &lt; translate(substring-before(@Created,' '),'-','')">
			<span class="Ms-NewIcon"><xsl:text> !New</xsl:text></span>

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Question by:CptO
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LVL 15

Expert Comment

ID: 38757711
do you want this 2 day new to be 7 days for just a particular list view or you would like it for the web app? You can change the value with stsadm
stsadm -o setproperty -pn days-to-show-new-icon -pv 7 -URL [Server URL]

changing the value for -pv to the number of days you want it.

Author Comment

ID: 38759651
I forget to mention that every time.  I do not have administrative access to the server. I just take care of one site/ department on the server. Plus our server admnins only support OOTB functionality. Unless there is a pressing need such as security, they prefer not to make any changes.  I would also like to display New or Updated depending on whether the document is new to the library or has been modified after its creation date.

I was messing around with simplifying this and using the using the <xsl:if test=""> function and get the same results. Equal and Not equal work, but any combination of Greater or Lesser than (&gt; or &lt;) do not, with no error message Example:
These two work:
<xsl:if test="substring-before(@Modified,'T') = substring-before(@Created,'T')"
<xsl:if test="substring-before(@Modified,'T') != substring-before(@Created,'T')">

These Two do not:
<xsl:if test="substring-before(@Modified,'T') &gt; substring-before(@Created,'T')">
<xsl:if test="substring-before(@Modified,'T') &lt; substring-before(@Created,'T')">

Author Comment

ID: 38760830
Update - If I create a calculated column in the library, and use the equation


It works as expected. Than you can use Greater than and less than operators and it works as expected. While this is a potential soultion, it is not ideal as it would require modifiying a LOT of libraries.
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LVL 15

Expert Comment

ID: 38761512
I know it doesn't make sense since = != work but what if you formatted the date for the created and modified columns to ensure they are in the same format when comparing them. Something like this

<xsl:if test="ddwrt:FormatDate(string(@Modified), number(1033),1)&lt;=ddwrt:FormatDate(string(@Created), number(1033), 1)">

Accepted Solution

CptO earned 0 total points
ID: 38775413
Please note I am a power user, not a professional developer, so use anything in this post at your own risk and test test test.

Sharepoint guru - same issue. It only works for the equal or not equal operators. Apparently this is because SPD / SP sucks at doing date comparisons, probably because dates are not base 10 and Microsoft just did not build any documented functions to do it in SharePoint Designer. That is really strange as a calculated column in a document library will work

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A developer answered with a working solution in the MSDN Sharepoint develeopers forum Using Greater than or Less than for date comparison in Sharepoint Designer

My original code should never have worked at all. It only did so by pure chance. the code converted dates into the YYYYMMDD format. If your date added or subtracted  was less than 31 days it works, once you go over  30 - 31 days it fails. Try it and see. 20121201 (12-1-2012)  + 31 = 20121232 (not a date) If it worked correctly I would expect 20130101 (1-1-2013)

The working code suggested is below. It converts the times into the number of seconds since a date hard coded in the program. All operators work, and I have compared it on dates up to 395 days apart and it worked. Information on the undocumnented "ddwrt:DateTimeTick" can be found at ddwrt:DateTimeTick -Marc D anderson, MVP

Note a couple of things - As mentioned in the article, this will give the incorrect result in SharePoint Designer, but it will give the correct result on the browser. This is due to the different beginning dates used by Sharepoint and the browser (Good one Microsoft). also note that they use the $Today variable to calculate today, which  requires @Today to be declared in the webpart, instead of "TodayIso()", which should be easier...As long as you rememebr "Please note I am a power user not a sharepoint developer..." and test.

	<xsl:when test="(number(ddwrt:DateTimeTick(ddwrt:GenDisplayName(string(@Created)))) - number(ddwrt:DateTimeTick(ddwrt:GenDisplayName(string(ddwrt:TodayIso()))))) div 864000000000 +7 &gt;= 0">
		<span class="Ms-NewIcon"><xsl:text> !New</xsl:text></span>
	<xsl:when test="(number(ddwrt:DateTimeTick(ddwrt:GenDisplayName(string(@Modified)))) - number(ddwrt:DateTimeTick(ddwrt:GenDisplayName(string(ddwrt:TodayIso()))))) div 864000000000 +7 &gt;= 0">
		<span class="Ms-NewIcon"><xsl:text> !Updated</xsl:text></span>

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I am not sure how to close this question without marking my own post as the answer. I do not deserve the posts as someone else gave me the answer, so please forgive me if that is incorrect.

Author Closing Comment

ID: 38796073
This item is closed. I proposed my own asnwer as it is the one that is working for me. The points however should not be awarded as the amswer was given by someone else in another forum, thus it is not me who answered the question. Please see the other post at <br /><br />There are several informative links that will give addional information on the undocumented functions in the answer.

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