Iterate through BO Types

Hi John,

There are two approaches to iterate through BO types:

1. iterate through classes, provided by the DevExpress.Xpo.Metadata.XPDictionary:
   <code lang="cs">
   public override void CustomizeXPDictionary(DevExpress.Xpo.Metadata.XPDictionary xpDictionary) {
       base.CustomizeXPDictionary(xpDictionary);
       foreach (DevExpress.Xpo.Metadata.XPClassInfo item in xpDictionary.Classes)
       {
           //…
       }
   }
   </code>
2. iterate through items within the BOModel node in the application model:
   <code lang="cs">
                   foreach (DictionaryNode groupNode in Application.Model.RootNode.FindChildNode("NavigationItems").ChildNodes)
                   {
                       foreach (DictionaryNode itemNode in groupNode.ChildNodes)
                       {
                           if (itemNode.GetAttributeValue("ViewID") == objectTypeViewID)
                           {
                               return groupNode;
                           }
                       }
                   }
   </code>

>>provide a drop down list of types just like the list of types provided when creating a new ReportData object
>>how do I check Attributes since I plan to add a new one 'VisibleInTemplate(Boolean)'
I suggest you review the code, which illustrates how it is implemented in the case of the ReportData class:
<code lang="cs">
                [NonPersistent]
public class NewReportParams {
private string reportName;
private Type dataType;
public NewReportParams() { }
public string ReportName {
get { return reportName; }
set { reportName = value; }
}
                                // pay your attention to the following line
[TypeConverter(typeof(ReportDataTypeConverter))]
public Type DataType {
get { return dataType; }
set { dataType = value; }
}
}
</code>
<code lang="cs>
                public class ReportDataTypeConverter : LocalizedClassInfoTypeConverter {
public ReportDataTypeConverter() : base() { }
public ReportDataTypeConverter(XPDictionary dictionary) : base(dictionary) { }
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) {
StandardValuesCollection baseCollection = base.GetStandardValues(context);
if (CaptionHelper.ApplicationNode == null) {
return baseCollection;
}
DictionaryNode boModelNode = CaptionHelper.ApplicationNode.FindChildNode(BOModelNodeWrapper.NodeName);
if (boModelNode == null) {
return baseCollection;
}
List<Type> result = new List<Type>();
foreach(Type type in baseCollection) {
if(type == null) {
result.Add(null);
}
else {
DictionaryNode classNode = boModelNode.FindChildNode(ClassInfoNodeWrapper.NodeName, ClassInfoNodeWrapper.NameAttribute, type.FullName);
                                                                                // pay your attention to the following line
if(classNode != null && classNode.GetAttributeBoolValue(Module.VisibleInReportsAttributeName)) {
result.Add(type);
}
}
}
return new StandardValuesCollection(result);
}
}
</code>

>>how to iterate through it's properties
You can iterate through the properties, provided by your BO's ClassInfo property.

Thanks
Dennis

Thanks Dennis
This should set me well on my way.
John

Please feel free to contact us in case of any further difficulty.
Thanks
Dennis