How to find the checked state of members in Silverlight OlapClient?
You can find the checked members of a dimension from the underlying MetaTreeNode of MemberEditor window. By iterating child nodes in MetaTreeNodeCollection, you can find the selected/checked state of each member of a dimension.
In the following code example, consider the column axis of AxisElementBuilder as an example. Here the Measures are excluded, as only the selected/checked members from a dimension are retrieved.
On iterating the members besides a dimension, the IsSelected property of the node is checked. If it’s true, the member is selected and added to the collection else not.
C#
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
……
……
//Triggering Loaded event of OlapClient
this.olapClient1.Loaded += olapClient1_Loaded;
}
void olapClient1_Loaded(object sender, System.Windows.RoutedEventArgs e)
{
List<string> childNodeCollection = new List<string>();
string metaTreeNodeIsSelected= "";
string childNodeIsSelected = "";
//In this example, column axis in AxisElementBuilder is processed
if(this.olapClient1.AxisElementBuilderColumn!=null)
{
//Iterating MetaTreeNode in column axis
for(int i=0;i<this.olapClient1.AxisElementBuilderColumn.MetaTreeNodes.Count;i++)
{
//Condition to omit Measure Nodes
if (this.olapClient1.AxisElementBuilderColumn.MetaTreeNodes[i].NodeType != Syncfusion.OlapSilverlight.Data.MetaTreeNodeType.MeasureGroup)
{
//Iterating each members inside dimension
for(int j=0;j<this.olapClient1.AxisElementBuilderColumn.MetaTreeNodes[i].ChildNodes.Count;j++)
{
//Condition checking the members checked state
If
(this.olapClient1.AxisElementBuilderColumn.MetaTreeNodes[i].ChildNodes[j].IsSelected == true)
{
//Retrieving caption of the checked node
childNodeIsSelected =this.olapClient1.AxisElementBuilderColumn.MetaTreeNodes[i].ChildNodes[j].Caption.ToString();
//Adding name of the checked node in a collection
childNodeCollection.Add(childNodeIsSelected);
}
}
}
}
}
}
}
VB
Partial Public Class MainPage Inherits UserControl Public Sub New() InitializeComponent() ……. ……. 'Triggering Loaded event of OlapClient AddHandler Me.olapClient1.Loaded, AddressOf olapClient1_Loaded End Sub Private Sub olapClient1_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Dim childNodeCollection As New List(Of String)() Dim metaTreeNodeIsSelected As String= "" Dim childNodeIsSelected As String = "" 'In this example, column axis in AxisElementBuilder is processed. If Me.olapClient1.AxisElementBuilderColumn IsNot Nothing Then 'Iterating MetaTreeNode in column axis For i As Integer = 0 To Me.olapClient1.AxisElementBuilderColumn.MetaTreeNodes.Count – 1 'Condition to omit Measure Nodes If Me.olapClient1.AxisElementBuilderColumn.MetaTreeNodes(i).NodeType <> Syncfusion.OlapSilverlight.Data.MetaTreeNodeType.MeasureGroup Then metaTreeNodeIsSelected = Me.olapClient1.AxisElementBuilderColumn.MetaTreeNodes(i).IsSelected.ToString() 'Iterating each members inside dimension For j As Integer = 0 To Me.olapClient1.AxisElementBuilderColumn.MetaTreeNodes(i).ChildNodes.Count - 1 If Me.olapClient1.AxisElementBuilderColumn.MetaTreeNodes(i).ChildNodes(j).IsSelected = True Then 'Retrieving caption of the checked node childNodeIsSelected =Me.olapClient1.AxisElementBuilderColumn.MetaTreeNodes(i).ChildNodes(j).Caption.ToString() 'Adding name of the checked node in a collection childNodeCollection.Add(childNodeIsSelected) End If Next j End If Next i End If End Sub End Class
