getmedia systemoverflowexception value was either too large or too small for an int32 - XSLT

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Anuj 15 posts 35 karma points

Feb 15, 2012 @ 09:00

0

GetMedia System.OverflowException: Value was either too large or too small for an Int32.

XSLT

Hi,

I am new to umbraco and working on media files and getting some problems.Please have a look at them and tell me where i am wrong.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:stylesheet [ <!ENTITY nbsp " "> ]>
<xsl:stylesheet
  version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:msxml="urn:schemas-microsoft-com:xslt"
  xmlns:umbraco.library="urn:umbraco.library" xmlns:Exslt.ExsltCommon="urn:Exslt.ExsltCommon" xmlns:Exslt.ExsltDatesAndTimes="urn:Exslt.ExsltDatesAndTimes" xmlns:Exslt.ExsltMath="urn:Exslt.ExsltMath" xmlns:Exslt.ExsltRegularExpressions="urn:Exslt.ExsltRegularExpressions" xmlns:Exslt.ExsltStrings="urn:Exslt.ExsltStrings" xmlns:Exslt.ExsltSets="urn:Exslt.ExsltSets"
  exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets ">

<xsl:output method="xml" omit-xml-declaration="yes"/>

<xsl:param name="currentPage"/>

<xsl:template match="/">


  <xsl:value-of select="$currentPage/mediaItem"/>   // Its returning 1052

<xsl:value-of select="umbraco.library:GetMedia($currentPage/mediaItem, 'false')"/>
// Here is the error.
</xsl:template>

</xsl:stylesheet>

When i use <xsl:value-of select="umbraco.library:GetMedia($currentPage/mediaItem, 'false')"/>

then its throwing error

Error occured

System.OverflowException: Value was either too large or too small for an Int32.
at System.Convert.ToInt32(Double value)
at System.Double.System.IConvertible.ToInt32(IFormatProvider provider)
at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
at System.Xml.Xsl.Runtime.XmlQueryRuntime.ChangeTypeXsltArgument(XmlQueryType xmlType, Object value, Type destinationType)
at System.Xml.Xsl.Runtime.XmlQueryContext.InvokeXsltLateBoundFunction(String name, String namespaceUri, IList`1[] args)
at (XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
at Root(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
at Execute(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlSequenceWriter results)
at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter writer)
at System.Xml.Xsl.XslCompiledTransform.Transform(IXPathNavigable input, XsltArgumentList arguments, XmlWriter results, XmlResolver documentResolver)
at System.Xml.Xsl.XslCompiledTransform.Transform(IXPathNavigable input, XsltArgumentList arguments, TextWriter results)
at umbraco.presentation.webservices.codeEditorSave.SaveXslt(String fileName, String oldName, String fileContents, Boolean ignoreDebugging)

If i use <xsl:value-of select="umbraco.library:GetMedia(1052, 'false')"/>

Then its perfect.Please tell me whats wrong in the above code.

Thanks

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Tom Fulton 2030 posts 4998 karma points c-trib

Feb 15, 2012 @ 15:03
0
Hi,

You should wrap the GetMedia calls in a check to verify you have a value. The reason is that when you press Save, Umbraco does a quick test of your XSLT file. In this test it may not have a value for $currentPage/mediaItem - and this will cause an exception as GetMedia is expecting an integer. Also this could happen if you run the macro on a page that doesn't have any media selected.

So you can handle both situations by wrapping it in a test to ensure there is a value:
```
<xsl:variable name="mediaId" select="$currentPage/mediaItem"/>

<xsl:if test="$mediaId &gt; 0">
  <xsl:value-of select="umbraco.library:GetMedia($mediaId, false())"/>
</xsl:if>
```
Hope this helps,
Tom
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GetMedia System.OverflowException: Value was either too large or too small for an Int32.