HTML Script Tag be converted by Tridion

Question

[Premise]

I create a schema having text field (not RTF).

and I create TBB using c# that convert value of text field to html source.

i show a part of that TBB below.

                val = ((TextField)field).Value;

                package.PushItem(field.Name , package.CreateHtmlItem(val));

[Problem]

I enter below value to text field using above schema, as described below.

 <script type="text/javascript">
    // <![CDATA[
    &
    // ]]>
  </script>

next, i preview(render with CT) the component. it convert below

  <script type="text/javascript">
    // 
    &amp;
    // 
  </script>

but I enter below value to text field using above schema, as described below.

 <script type="text/javascript">
    // <![CDATA[
    &
    // ]]>
  </script></div>

next, i preview(render with CT) the component. it don't convert below

  <script type="text/javascript">
     // <![CDATA[
     &
     // ]]>
  </script></div>

i guess that tridion convert above. why happen this? (The CT use one tbb and one DWT only. TBB is above TBB. DWT is the output of tbb)

using Template Builder, I know that TBB output don't be converted ,but DWT output is conveted.

I show DWT source below.

@@field.Name@@

[More]

I enter below value to text field using above schema, as described below.

<div>&amp;</div>

<script type="text/javascript">
    // <![CDATA[
    &
    // ]]>
</script>

i preview(render with CT) the component. it convert below

<div>&amp;</div>

<script type="text/javascript">
    // 
    &amp;
    // 
</script>

but I enter below value to text field using above schema, as described below.

<div>&</div>

<script type="text/javascript">
    // <![CDATA[
    &
    // ]]>
</script>

i preview(render with CT) the component. it don't convert below.

<div>&</div>

<script type="text/javascript">
    // <![CDATA[
    &
    // ]]>
</script>

Answer 1

When you render HTML based items from the package they are escaped for you (turning your & into &)

Instead of using Package.CreateHtmlItem(), try using Package.CreateStringItem() instead:

 val = ((TextField)field).Value;
 package.PushItem(field.Name , package.CreateStringItem(ContentType.Text, val));