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Dynamics CRM 2011 How To

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How to get or set the value of a lookup field

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The value of a field that is a lookup-field is obtained the same way as any other field, i.e.:

var value = Xrm.Page.getAttribute("lookupField").getValue();

what is different is how to use what is returned:

if (value) {
  var name = value[0].name;
  var id = value[0].id;
  var entityType = value[0].entityType;
}

where:

name

Is the value the user sees displayed in the field.

id

Is the logical guid that identifies the record.

entityType

Is the logical entity name of the entity being referenced.

To create a new lookup value use either:

var newValue = new Array();
newValue[0] = new Object();
newValue[0].id = recordId;
newValue[0].name = displayText;
newValue[0].entityType = logicalEntityName;
Xrm.Page.getAttribute("lookupField").setValue(newValue);

or this can be collapsed down to:

Xrm.Page.getAttribute("lookupField").setValue(
    [{id: recordId, name:displayText, entityType:logicalEntityName}]);

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These notes have been tested with Microsoft Dynamics CRM 2011, and may apply to other versions as well.