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I have an application that loads all of my content types into a drop down list. When an item in the drop down list is selected I would like to get a list of the columns for that content type but each one only returns Title and ContentType. Here is the code I am using:

    protected void ddl_ContentTypes_SelectedIndexChanged(object sender, EventArgs e)
    {
        SPContentType ct = new SPContentType(SPBuiltInContentTypeId.Document,SPContext.Current.Web.ContentTypes,ddl_ContentTypes.SelectedValue);
        foreach (SPField f in ct.Fields)
        {
           //do stuff with each field.  Only returns Title and ContentType
        }
    }

Is there something I should be doing differently. Is it bad that I am using the built in Document content type for the ParentContentType?

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1 Answer 1

up vote 3 down vote accepted

According to MSDN, this construction will create new blank content type with ddl_ContentTypes.SelectedValue as it's name:

SPContentType ct = new SPContentType(
    SPBuiltInContentTypeId.Document,
    SPContext.Current.Web.ContentTypes,
    ddl_ContentTypes.SelectedValue);

What you do need, is to retrieve one of the existing content types, based on it's name. Please, try this code instead of the fragment above:

SPContentType ct = SPContext.Current.Web.ContentTypes[ddl_ContentTypes.SelectedValue];
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Doh! That fixed it, thanks! –  Abe Miessler Apr 11 '11 at 19:02

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