==========================
**parameterValue** element
==========================

Element **parameterValue** is used to reference a parameter value in auto-implemented method of auto-generated service.

This element can be used only under elements **if** or **default** under element **autoMethod**.

.. note::
    Refer to :doc:`../autogenerated-services/index` for more details on auto-generated services.

The element uses an attribute **paramName** to reference the parameter of auto-generated method.
A parameter with this name should be declared under element **../autoService/autoMethod/methodSignature**.

An example below demonstrated an example of using an element **parameterValue**.

.. code-block:: xml
    :linenos:

    <autoGeneratedServices>
      <!--Demo of referencing auto-implemented method parameters using
          parameterValue element-->
      <autoService
        interface="IoC.Configuration.Tests.AutoService.Services.IAppInfoFactory">

        <autoMethod name="CreateAppInfo"
                    returnType="IoC.Configuration.Tests.AutoService.Services.IAppInfo">
          <methodSignature>
            <int32 paramName="appId"/>
            <string paramName="appDescription"/>
          </methodSignature>

          <default>
            <constructedValue
                type="IoC.Configuration.Tests.AutoService.Services.AppInfo">
              <parameters>
                <!--The value of name attribute is the name of constructor parameter
                    in AppInfo-->
                <!--
                The value of paramName attribute is the name of parameter in
                IAppInfoFactory.CreateAppInfo.
                This parameter should be present under autoMethod/methodSignature element.
                -->
                <!--In this example the values of name and paramName are similar, however
                    they don't have to be.-->
                <parameterValue name="appId" paramName="appId" />
                <parameterValue name="appDescription" paramName="appDescription" />
              </parameters>
            </constructedValue>
          </default>
        </autoMethod>
      </autoService>
    </autoGeneratedServices>