Unable to cast object of type 'Microsoft.Xrm.Sdk.OptionSetValue' to type 'System.String'

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Posted on by Jamal JEK

Hi, i am trying to read the value of an OptionSetValue using the code below, but it is not working and it's throwing the error :

Error of Plugin: System.InvalidCastException: Unable to cast object of type 'Microsoft.Xrm.Sdk.OptionSetValue' to type 'System.String'.
at Microsoft.Xrm.Sdk.Entity.GetAttributeValue[T(String attributeLogicalName).

Any ideas?

                    if (entity.Attributes.Contains("addresstypecode"))
                    {
                        var address_type = entity.GetAttributeValue("addresstypecode").Value.ToString();
                        QueryExpression query = new QueryExpression("customeraddress");
                        query.ColumnSet = new ColumnSet("addresstypecode");
                        query.Criteria.AddCondition("addresstypecode", ConditionOperator.Equal, address_type);
                        EntityCollection collection = service.RetrieveMultiple(query);

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Answers (2)

Verified answer

Pankaj Gogoi 3,177 on at

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RE: Unable to cast object of type 'Microsoft.Xrm.Sdk.OptionSetValue' to type 'System.String'

Hi Jamal,

Can you try with this.

var address_type = ((OptionSetValue)entity["addresstypecode"]).Value;

Best Regards

PG
Verified answer

David Jennaway 14,065 on at

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RE: Unable to cast object of type 'Microsoft.Xrm.Sdk.OptionSetValue' to type 'System.String'

You shouldn't cast the OptionSetValue to a string. If you change line 3 to the following it should work

var address_type = entity.GetAttributeValue<OptionSetValue>("addresstypecode").Value;