Unable to cast object of type 'System.Guid' to type 'Microsoft.Xrm.Sdk.EntityReference'

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Posted on by Community Member

I have the following code

OrganizationServiceProxy serviceProxy = GetOrganizationService();
Entity lead = new Entity("lead");
EntityReference accountLookup = new EntityReference
{
Id = accountId,
LogicalName = "account"
};
EntityReference ownerLookup = new EntityReference
{
Id = aePrimary,
LogicalName = "systemuser"
};
//lead.Attributes["parentaccountid"] = accountLookup;
lead.Attributes["ds_aeprimary"] = aePrimary;
lead.Attributes["ownerid"] = ownerLookup;
lead.Attributes.Add("ds_projecttype", new OptionSetValue(projectType));

Guid response = serviceProxy.Create(lead);

I am getting the Unable to cast object of type 'System.Guid' to type 'Microsoft.Xrm.Sdk.EntityReference' after upgrading sdk from 6 to 8. I went through article in this community and on google but nothing helped. Please help Thanks!

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Answers (2)

Michel van den Brink 4,697 on at

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RE: Unable to cast object of type 'System.Guid' to type 'Microsoft.Xrm.Sdk.EntityReference'

Any time, here to help! :-)
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Community Member on at

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RE: Unable to cast object of type 'System.Guid' to type 'Microsoft.Xrm.Sdk.EntityReference'

Yes That is the problem. Thanks!
Community Member on at

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RE: Unable to cast object of type 'System.Guid' to type 'Microsoft.Xrm.Sdk.EntityReference'

Yes it is. That's the problem. Thanks!
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Aric Levin - MVP 30,188 Moderator on at

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RE: Unable to cast object of type 'System.Guid' to type 'Microsoft.Xrm.Sdk.EntityReference'

Hi Jack,

A few questions:

What data type is ds_aeprimary? Not in your code?

Seems like the issue is there as you are trying to put it in the owner lookup.

Should that be an entityreference as well instead of a Guid?
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Michel van den Brink 4,697 on at

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RE: Unable to cast object of type 'System.Guid' to type 'Microsoft.Xrm.Sdk.EntityReference'

Hello,

What type is your field 'ds_aeprimary'?

That's the only field I can see where your code is trying to write a GUID.