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WebMatrix conversion failed when converting from a character string to uniqueidentifier?

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net
 

I am trying to retrieve xml from a small function in my .cshtml page. Its throwing me an error. This however, runs fine in a console/form environment.

It takes 3 parameters and 1 exception.

myDll.GetXML(year, username, uniqueidentifier, out ex);

When I run this page I get the error, "Conversion failed when converting from a character string to uniqueidentifier."

Or a stack of.

System.Data.SqlClient.SqlException (0x80131904): Conversion failed when converting from a character string to uniqueidentifier.

   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)

   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)

   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()

   at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)

   at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()

   at System.Data.SqlClient.SqlDataReader.get_MetaData()

   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)

   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBeha


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Conversion failed when converting from a character string to uniqueidentifier

  

Hi all,

 

I am trying to match a username to a userid which are in 2 different sql tables. Here is my select statement:

SELECT     aspnet_Users.UserName
FROM         aspnet_Users INNER JOIN
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When I run this i get an error message: "Conversion failed when converting from a character string to uniqueidentifier"

Is there anyway around this? Or a different select statement etc?

 

Thanks!


Conversion failed when converting from a character string to uniqueidentifier

  

Can anyone please advise how I can get around the following error with the following code?

SELECT
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	,m.LoweredEmail
FROM 
	(SELECT 
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Error:
Msg 8169, Level 16, State 2, Line 1
Conversion failed when converting from a character string to uniqueidentifier.

As you can probably tell, the datatypes are:
m.UserId = uniqueidentifier
l.System_User_ID = varchar(256)

I was hoping the casting of one to the other would solve the issue, but it doesn't. How can I re-code this? I see from other forums it would probably be best to set all these fields to uniqueidentifier, but would prefer not to at this stage as it will involve changing quite a bit throughout the whole site!


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I hope someone can advise on the issue I'm having.

This SQL worked beautiful until I added in @startdt and @enddt and this section >> AND [Selldate] BETWEEN ' + @startdt + ' AND ' + @enddt + '

By adding in this condition, I now get the following error:

Msg 241, Level 16, State 1, Line 8
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