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Unable to cast object of type to type at Microsoft.Xrm.Sdk.Entity.GetAttributeValue

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Posted on by Khaled Rimawi

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Hi,

I am developing a plugin that has a post entity image called "image" , and i'm trying to access one of the crm fields in the relevant entity through this image , the field is called "test score" with schema "new_testscore", this field is floating number. I have generated an early bound entity classes with CrmSvcUtil.exe. but i'm facing this error:

System.InvalidCastException: Unable to cast object of type 'System.Decimal' to type 'System.Nullable`1[System.Double'. at Microsoft.Xrm.Sdk.Entity.GetAttributeValue[T(String attributeLogicalName) at Xrm.Incident.get_new_TestScore()

this is snapshot of my code:

var postImage = context.PostEntityImages["image"].ToEntity();
var testScore = postImage.new_TestScore;

Thank you.

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Bipin D365 28,983 Moderator on at

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Hi,

You should first check if new_TestScore field is present in dictionary.

Your code should look like below.

var postImage = context.PostEntityImages["image"].ToEntity<custom>();

if(postImage.Attributes.Contains("new_testscore") && postImage["new_testscore"]!=null)

var testScore = postImage.new_TestScore;

Please mark my answer verified if i were helpful

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dd555 65 on at

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I am wondering if you changed new_testScore from an optional to a required field but have not regenerated the early bound code. Have you tried regenerating the early bound code?

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