Get parent type Object ex. in treeview

void method

{

// calling the method

TreeViewItem trvItem = GetParentTreeViewItem((DependencyObject)sender);

}

// this will return the desire type exg. here it is returning TreeViewItem type..

private static TreeViewItem GetParentTreeViewItem(DependencyObject item)

{

if (item != null)

{

DependencyObject parent = VisualTreeHelper.GetParent(item);

TreeViewItem parentTreeViewItem = parent as TreeViewItem;

return (parentTreeViewItem != null) ? parentTreeViewItem : GetParentTreeViewItem(parent);

}

return null;

}

Get xml from web services and use in tree view of silver light

private void cmbTaxonomy_SelectionChanged(object sender, SelectionChangedEventArgs e)

{

_objWebService.getTreeOfClassCompleted += new EventHandler(_objWebService_getTreeOfClassCompleted);

_objWebService.getTreeOfClassAsync(cmbTaxonomy.SelectedItem.ToString());

}

const string xmlNodeTextAttName = "Name";

const string xmlNodeTagAttId = "Id";

const string xmlNodeTagClass = "Class";

const string xmlNodeTagRoot = "Root";

void _objWebService_getTreeOfClassCompleted(object sender, getTreeOfClassCompletedEventArgs e)

{

XDocument xDocument = XDocument.Parse(e.Result);

trvHierarchy.Items.Clear();

if (xDocument.Root != null)

if(xDocument.Root.Elements().ToArray().Count()>0)

{

foreach (var VARIABLE in xDocument.Root.Elements().ToArray())

{

if (VARIABLE != null)

{

TreeViewItem parentNodeItem = new TreeViewItem

{

IsExpanded = true,

Header = CreateTreeViewItemHeader(VARIABLE.Attribute(xmlNodeTextAttName).Value, Convert.ToInt64(VARIABLE.Attribute(xmlNodeTagAttId).Value))

};

AddChildItemsInTree(VARIABLE, parentNodeItem);

trvHierarchy.Items.Add(parentNodeItem);

}

}

}

}

private void AddChildItemsInTree(XElement ParentVariable, TreeViewItem parentNodeItem)

{

if(ParentVariable.HasElements)

{

foreach(var variableChild in ParentVariable.Elements().ToArray())

{

if (ParentVariable != null)

{

TreeViewItem childNodeItem = new TreeViewItem

{

IsExpanded = true,

Header = CreateTreeViewItemHeader(variableChild.Attribute(xmlNodeTextAttName).Value, Convert.ToInt64(variableChild.Attribute(xmlNodeTagAttId).Value))

};

//childNodeItem.Header = variableChild.Attribute(xmlNodeTextAttName).Value;

AddChildItemsInTree(variableChild, childNodeItem);

parentNodeItem.Items.Add(childNodeItem);

}

}

}

}

Creat xml for web services and return it

public string getTreeOfClass(string taxonomyName)

{

//get ClassElementsName

var taxsonomyId = _exhibitDb.Taxonomies.SingleOrDefault(o => o.Taxonomy1 == taxonomyName);

var classeList = from c in _exhibitDb.Classes join tc in _exhibitDb.TaxonomyClasses on c.ID equals tc.ClassID where (tc.TaxonomyID.Equals(taxsonomyId.ID)) select c;

//XDocument document = new XDocument();

//document.Root

const string xmlNodeTextAttName = "Name";

const string xmlNodeTagAttId = "Id";

const string xmlNodeTagClass = "Class";

const string xmlNodeTagRoot = "Root";

XmlWriterSettings settings = new XmlWriterSettings

{

Indent = true,

OmitXmlDeclaration = true,

NewLineOnAttributes = false,

Encoding = Encoding.UTF8

};

StringBuilder sb = new StringBuilder();

XmlWriter writer = XmlWriter.Create(sb, settings);

//writing xml

if (writer != null)

{

writer.WriteStartDocument();

writer.WriteStartElement(xmlNodeTagRoot);

foreach (var v in classeList)

{

writer.WriteStartElement(xmlNodeTagClass);

writer.WriteAttributeString(xmlNodeTextAttName, v.Class1);

writer.WriteAttributeString(xmlNodeTagAttId, v.ID.ToString());

AddChildElement(writer, v.ID, xmlNodeTagAttId, xmlNodeTextAttName, xmlNodeTagClass);

writer.WriteEndElement();

}

writer.WriteEndElement();

writer.WriteEndDocument();

writer.Flush();

}

return sb.ToString();// xmlDocument;

}