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POError converting data type varchar to datetime when running raw SQL but not when called by LINQ to SQL
 

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  1. POError converting data type varchar to datetime when running raw SQL but not when called by LINQ to SQL
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    <p>A client is getting an error when running my code. They sent me the SQL from profilder. </p> <p>When I paste it into SQL Server Management Studio it fails with: <strong>Error converting data type varchar to datetime</strong> </p> <p>However it doesn't fail when I run it on my local dev box or another clients production sever.</p> <p>To test I created a simple app with a L2S datacontext containing one entity that looks something like:</p> <pre><code>public class UserAccount { public int Id { get; set; } public string Username { get; set; } public DateTime? LastActivity { get; set; } } </code></pre> <p>Insert a record and then update it:</p> <pre><code>var account = db.UserAccounts.Single(a =&gt; a.Username == "Mojo"); account.LastActivity = DateTime.Now; db.SubmitChanges(); </code></pre> <p>The records gets updated in the database. But when I grab the T-SQL from Profiler:</p> <pre><code>exec sp_executesql N'UPDATE [UserAccount] SET [LastActivity] = @p2 WHERE ([Id] = @p0) AND ([Username] = @p1) AND ([LastActivity] IS NULL)',N'@p0 int,@p1 nvarchar(4),@p2 datetime',@p0=1,@p1=N'Mojo',@p2='2009-11-10 14:04:41.7470000' </code></pre> <p>and execute it in SQL Server Management Studio I get: <strong>Error converting data type varchar to datetime</strong> </p> <p>What am I missing?</p>
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    1. COWhat's the field type for LastActivity in the DB?
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    2. COLastActivity DateTime null
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