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POCheck if XML coloumn in EF contains specific value
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copied!<p>I have a question about EF and XML coloumn in the EF Model.</p> <p>I have a search page in my project with many fields. I intersect my values with code:</p> <pre><code>IQueryable<ServicesRegistration> query = null; using (SelfServiceEntities context = new SelfServiceEntities()) { query = context.ServicesRegistrations.Include("BanStatusType").Where(c => c.AppID == "MyApp"); if (filter.RequestStatus != null) { if (query == null) { query = context.ServicesRegistrations .Include("BanStatusType") .Where(c => c.BanStatusType.StatusID == filter.RequestStatus); } else { query = query.Where(c => c.BanStatusType.StatusID == filter.RequestStatus); } } } </code></pre> <p>This work well for all simple types like string, int etc.</p> <p>But when I try to do such operation on XML coloumn I get Exception:</p> <blockquote> <p>InnerException = {"Disallowed implicit conversion from data type xml to data type nvarchar, table 'dbo.ServicesRegistrations', column 'MetadataXml'. Use the CONVERT function to run this query."}</p> </blockquote> <p>My code is:</p> <pre><code>if (!string.IsNullOrEmpty(filter.SerialNumber)) { if (query == null) { query = context.ServicesRegistrations .Include("BanStatusType").Where(c => c.MetadataXml.Contains(filter.SerialNumber)); } else { query = query.Where(c => c.MetadataXml.Contains(filter.SerialNumber)); } } </code></pre> <p>I using Ef 3.5 and I know that there is some problem in implementation of XML data in it.</p> <p>Is somebody solve such problem? Thanks</p>

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