Dynamics 365/CRM 9.0+ | Open a specific form based on a field value

gistfile16.js

//-------------------------------------------------------------------------------------------
// openSpecificForm
//-------------------------------------------------------------------------------------------

function openSpecificForm(e){
    
    // Get the Form Context
    var formContext = e.getFormContext();

    //if the form is update form
    if (formContext.ui.getFormType()==2) {
        
        // variable to store the name of the form
        var lblForm;
    
        // get the value picklist field
        var relType = formContext.getAttribute("customertypecode").getValue();
    
        // switch statement to assign the form to the picklist value
        // change the switch statement based on the forms numbers and picklist values
        switch (relType) {
            case 1:
                lblForm = "Information1";
                break;
            case 2:
                lblForm = "Information2";
                break;
            default:
                lblForm = "Information";
        }
        
        //check if the current form is form need to be displayed based on the value
        if (formContext.ui.formSelector.getCurrentItem().getLabel() != lblForm) {
            var items = Xrm.Page.ui.formSelector.items.get();
            for (var i in items) {
                var item = items[i];
                var itemId = item.getId();
                var itemLabel = item.getLabel()
    
                if (itemLabel == lblForm) {
                    //navigate to the form
                    item.navigate();
                } 
            }
        } 
    }
}