Unable to bind checked nodes in Radtreeview

[pavan]

 

I have a RadGrid that uses a GridTemplate column along with two Gridbutton columns called Edit and Delete .When I click on Edit to edit a particular record,  all my textboxes and combo boxes get filled from the grid column as these fields are also visible as the grid columns.In Edit panel ,we have also one treeview with checkboxes, which should populate with some checkboxes as checked  depending on the dataset. Here our problem started.We are not able to set checkboxes as checked.While dubugging, I observed that it is making the nodes as checked depending on dataset data but still it is not showing in the page.  

protected

 

 

void radTreeview_Load(object sender, EventArgs e)

 

{

 

RadTreeView radSelectPartner;
try
{
  radSelectPartner = (RadTreeView)sender;
  if (radSelectPartnerNodes.Count == 0)
{
    DataSet dtatable = (DataSet)Session["SelectPartner"];
    radSelectPartner.DataTextField = "Partner Name";
    radSelectPartner.DataValueField = "OrdID";
    radSelectPartner.DataFieldID = "OrdID";
    radSelectPartner.DataFieldParentID = "ParentID";
    radSelectPartner.DataSource = dtatable;
      if (ViewState["ContactEmail"] != null)
     {
     DataSet dsSelectParners = chkitems(ContactEmail);
     for (int count = 0; count < dsSelectParners.Tables[0].Rows.Count; count++)
     {
     if (dsSelectParners.Tables[0].Rows[count][0].ToString() != null)
         {
            foreach (RadTreeNode radNode in radSelectPartner.GetAllNodes())
              {
                radNode.Checkable = true;
                 // for checking only child node.Currently RadTreeView depth is 2.
                 if (radNode.Level != 0 && radNode.Level != 1)
                      {
                         if (radNode.Value.ToString() == dsSelectParners.Tables[0].Rows[count][1].ToString())
                               {
                                radNode.Checked = true;
                               }
                       }
                 }
             }
          }

 

[Nikolay Tsenkov]

Hi pavan,

Here is example, that should show you, how to bind the TreeView correctly:
1. markup:

Copy Code

<telerik:RadTreeView runat="server" ID="RadTreeView1">

</telerik:RadTreeView>

2. Code-behind:

Copy Code

protected void Page_Load(object sender, EventArgs e)
{
    DataTable dataTable = new DataTable();
    dataTable.Columns.Add("Text");
    dataTable.Columns.Add("Id");
    dataTable.Columns.Add("ParentID");
    dataTable.Columns.Add("Checked");

    dataTable.Rows.Add(new String[] { "root node1", "1", null, "false" });
    dataTable.Rows.Add(new String[] { "root node2", "2", null, "false" });
    dataTable.Rows.Add(new String[] { "root node3", "3", null, "false" });
    dataTable.Rows.Add(new String[] { "root node4", "4", null, "false" });
    dataTable.Rows.Add(new String[] { "root node5", "5", null, "false" });
    dataTable.Rows.Add(new String[] { "root node6", "6", null, "false" });
    dataTable.Rows.Add(new String[] { "node11", "7", "1", "false" });
    dataTable.Rows.Add(new String[] { "node12", "8", "1", "true" });
    dataTable.Rows.Add(new String[] { "node13", "9", "1", "true" });
    dataTable.Rows.Add(new String[] { "node14", "10", "1", "false" });
    dataTable.Rows.Add(new String[] { "node15", "11", "1", "false" });
    dataTable.Rows.Add(new String[] { "node16", "12", "1", "false" });
    dataTable.Rows.Add(new String[] { "node111", "13", "7", "false" });
    dataTable.Rows.Add(new String[] { "node112", "14", "7", "false" });
    dataTable.Rows.Add(new String[] { "node123", "15", "7", "false" });
    RadTreeView1.DataSource = dataTable;

    RadTreeNodeBinding binding = new RadTreeNodeBinding();
    binding.CheckedField = "Checked";
    binding.Checkable = true;

    RadTreeView1.DataFieldID="Id";
    RadTreeView1.DataTextField="Text";
    RadTreeView1.DataFieldParentID = "ParentID";

    RadTreeView1.DataBindings.Add(binding);
    RadTreeView1.CheckBoxes = true;
    RadTreeView1.DataBind();
}

(I am simulating the dataSource here in order to run the example without having to worry about dependencies).

Please, use the provided example in order to bind your TreeView and let me know the results.


Regards,
Nikolay Tsenkov
the Telerik team

[pavan]

Thanks for the reply...it works

[ahmet]

Hi,
i want use this sample but i can't :/

my code like that
ASPX:

<telerik:RadTreeView ID="RadTreeViewDevices" runat="server" Width="300px" Height="320px" CheckBoxes="true" DataTextField="NAME" DataValueField="ID" DataFieldID="ID" DataFieldParentID="TCID"><br>                    <DataBindings>
                       <telerik:RadTreeNodeBinding Expanded="True" Checkable="true" CheckedField="Checked"></telerik:RadTreeNodeBinding>                   
</DataBindings>               
</telerik:RadTreeView>

C#:
 RadTreeViewDevices.DataSource = DeviceList.ToDataTable();

                RadTreeViewDevices.DataBind();

Data result like the attach file. But result => all treeviews checkboxes unchecked

I trying different shape but result is the same. What is my  fault?
Can anyone help me?

[ahmet]

my fault is AJAX, now it works ty.

[Dimitar]

Hello,

Thank you for the follow up. I am glad to know that you have managed to resolve the issue faced.

Regards,
Dimitar
Telerik

 

 

[Brijkumar]

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