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Odata utility compile error : cannot convert from 'System.Xml.XmlReader' to 'System.Collections.Generic.IEnumerable<System.Xml.XmlReader>

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Posted on by VRD

Hi,

I have created OdataUtility to connect with D365FO.

I have installed Odata client Generator V4 and added OdataClient.tt file and set metadataDocumentUri to appropriate URL.

now it generated OdataClient.cs but when i try to build the solution, it throws below error. Please help if you know how to fix it. Thanks.

~ Vikky

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nmaenpaa 101,160 Moderator on at

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Could you check the code lines where the errors come from? And also share your code with us?

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Gunjan Bhattachayya 35,423 on at

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Hi Vikky,

Try replacing the "LoadModelFromString" method in OdataClient.cs with this code -

private static global::Microsoft.OData.Edm.IEdmModel LoadModelFromString() { global::System.Xml.XmlReader reader = CreateXmlReader(Edmx); try { return global::Microsoft.OData.Edm.Csdl.EdmxReader.Parse(reader); } finally { ((global::System.IDisposable)(reader)).Dispose(); } }

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Sergei Minozhenko 23,093 on at

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Hi Vikky,

Are you using demo project https://github.com/microsoft/Dynamics-AX-Integration/tree/master/ServiceSamples/ODataUtility ?

I recommend you not to use oDataUtility as it looks outdated, but create a new connected service with the latest version of oData generator + update oData.Client library to the latest version.

www.atomicax.com/.../part-1-getting-connected-vs2017-and-connected-services

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VRD on at

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Hi Nikolaos,

It fails at below line

return global::System.Xml.XmlReader.Create(new global::System.IO.StringReader(edmxToParse));

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VRD on at

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Hi Gunjan,

Thanks for your reply, but what is the 'Edmx' variable? Also, it fails at my end saying Microsoft.odata.Edm.csdl not found in the assembly. Are you missing a reference?

~ Vikky

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Gunjan Bhattachayya 35,423 on at

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Hi Vikky,

What version of Odata are you using? Please Try CsdlReader. This solution was provided by MS last time we had this issue. Please try this and check if you can compile successfully

private static global::Microsoft.OData.Edm.IEdmModel LoadModelFromString() { global::System.Xml.XmlReader reader = CreateXmlReader(Edmx); try { return global::Microsoft.OData.Edm.Csdl.CsdlReader.Parse(reader); } finally { ((global::System.IDisposable)(reader)).Dispose(); } }

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Sergei Minozhenko 23,093 on at

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Hi Vikky,

Manual fixing of auto-generated file OdataClient.cs will not help you too much in this case as next time when you refresh metadata you will get the same issue as all your manual changes wwill be wiped from the file.

There are different T4 templates are used for older and newer oData generator versions to generate .net code in OdataClient.cs. If you want to have a permanent fix you need to re-add the connected service or fix the T4 template (oDataClient.ttinclude).

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