Problem: I can never remember the syntax for the parameters files and need to lookup how to include hidden SP 2010 fields in the LINQ to SharePoint Proxy.
Initial Hypothesis: Use a Parameters.xml file to get SPMetal to generate the proxy with hidden fields. You can use the IncludeHiddenColumns element within the ContentType element to include all hidden fields or as I have done in the resolution example, specify the fields to include using the element Column.
Resolution:
1.> Create a parameters.xml (name it for you specific project) and add it to the 14\bin directory.
2.> Use the dos cmd prompt to generate the LINQ to SharePoint Proxy.
3.> Add the generate LINQ to SharePoint proxy code to your Visual Studio project.
4.> Add the query to show 1 of the hidden fields that is now part of your proxy.
More Info: You can use the same technique for custom site columns however, you will need to manually edit the proxy to perform the appropriate casting. I would still use the iCustomMapping interface for custom site columns.
Initial Hypothesis: Use a Parameters.xml file to get SPMetal to generate the proxy with hidden fields. You can use the IncludeHiddenColumns element within the ContentType element to include all hidden fields or as I have done in the resolution example, specify the fields to include using the element Column.
Resolution:
1.> Create a parameters.xml (name it for you specific project) and add it to the 14\bin directory.
4.> Add the query to show 1 of the hidden fields that is now part of your proxy.
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