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checkedNodes count 0

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TreeView

This is a migrated thread and some comments may be shown as answers.

Christian asked on 03 Mar 2011, 11:28 AM

Visual Studio 2008
.Net 3.5 SP1
Ajax controls (Q3 2010)

I always get count 0 when trying to get the checkedNodes from the treeview, i need to get the value of the node (can only be one checked node that is controlled by a javascript) and when i finally do a postback i want to get the value and do an insert into a database, cant really se the problem, is there any event that i have set wrong? seems that the client dousent set the node to checked or the server cant seem to find the checked node some how.

On page load i bind the treeview from a seperate method,

protected void Page_Load(object sender, EventArgs e)

{

UI ui = GetUI();

//if (!IsPostBack)

//{

// BindTvCaseType(ui);

//}

if (Session[Common.userSession] == null || ((AdManager.UserInfo)Session[Common.userSession]).Status == AdManager.LoginStatus.Error)

Response.Redirect("default.aspx");

//UI ui = GetUI();

BindCmbSeverity(ui);

BindCmbCharacter(ui);

BindTvCaseType(ui);

BindTvCaseType(ui); //This is where i bind the treeview

ui.tvType.ID = "tvCaseType";

ui.labEmail.Text = (((AdManager.UserInfo)Session[Common.userSession]).Email);

if ((((AdManager.UserInfo)Session[Common.userSession]).Email) == "")

{

ui.panEmailNotification.Visible = false;

}

ui.btnStep2.Attributes.Add("OnClick", "checkStep1(); return false;");

ui.btnStep3.Attributes.Add("OnClick", "checkStep2(); return false;");

}

The bind method

private void BindTvCaseType(UI ui)

{

ui.tvType.Nodes.Clear();

dsHelpdeskG2TableAdapters.typesTableAdapter taCaseTypes = new dsHelpdeskG2TableAdapters.typesTableAdapter();

dsHelpdeskG2.typesDataTable dtCaseTypes = taCaseTypes.GetData();

ui.tvType.Nodes.AddRange(TreeviewBuilder.BuildRecursive(null, 0, null, dtCaseTypes, null));

}

Treeviewbuilder method thats used above, to build the tree

public static List<RadTreeNode> BuildRecursive(dsHelpdeskG2.typesRow drNodeRow, int rowLevel, dsHelpdeskG2.permissionsDataTable dtPermissions, dsHelpdeskG2.typesDataTable dtTypes,

AdManager.UserInfo us)

{

List<RadTreeNode> nodeList = new List<RadTreeNode>();

if (rowLevel > 5)

return nodeList;

int c_ty_id = 0;

if (drNodeRow != null)

c_ty_id = drNodeRow.ty_id;

var nodeTable = from c in dtTypes

where c.ty_parent_id == c_ty_id

orderby c.ty_id

select c;

foreach (var nodeRow in nodeTable)

{

RadTreeNode node = new RadTreeNode();

node.Value = nodeRow.ty_id.ToString();

node.Text = nodeRow.ty_name;

node.Nodes.AddRange(BuildRecursive(nodeRow, rowLevel + 1, dtPermissions, dtTypes, us));

//node.ID = "tvTypeNode" + nodeRow.ty_id;

if (node.Nodes.Count > 0)

{

//om den inte har childs

node.Checkable = false;

}

else

{

//har childs..

//node.ch

}

nodeList.Add(node);

}

return nodeList;

}

button, postback to make insert, cant get values (always count 0)

protected void btnSendCase_Click(object sender, EventArgs e)

{

UI ui = GetUI();

dsHelpdeskG2TableAdapters.casesTableAdapter dtaCases = new dsHelpdeskG2TableAdapters.casesTableAdapter();

double anstId = ((AdManager.UserInfo)Session[Common.userSession]).AnstId;

var temp = Request.Params;

int caseTypeId = int.Parse(ui.tvType.CheckedNodes[0].Value); //This is where i set a int value and trye to retreave the checked node.

int caseSeverity = int.Parse(ui.cmbSeverity.SelectedValue);

int caseCharacter = int.Parse(ui.cmbCharacter.SelectedValue);

string userIP = Request.ServerVariables["REMOTE_ADDR"];

string userHostname = Request.ServerVariables["REMOTE_HOST"];

string caseHeader = ui.txtRubrik.Text;

bool caseNotification;

if (ui.rbEmailYes.Checked)

caseNotification = true;

else

caseNotification = false;

dtaCases.Insert(anstId, null, caseTypeId, caseSeverity, caseCharacter, DateTime.Now, userIP, null, caseHeader, 1, caseNotification, null, null, userHostname);

}

Treeview inside combobox (ASPX)

<telerik:RadComboBox ID="cmbCaseType" runat="server" Skin="Windows7" Height="160px" Style="vertical-align: middle;" Width="225px">

<ItemTemplate>

<div id="div1">

<telerik:RadTreeView ID="tvCaseType" runat="server" CheckBoxes="True" Height="160px" Width="100%" OnClientNodeChecked="nodeClicking">

</telerik:RadTreeView>

</div>

</ItemTemplate>

<Items>

<telerik:RadComboBoxItem Text="" />

</Items>

<CollapseAnimation Type="None" /><ExpandAnimation Type="None" />
</telerik:RadComboBox><br />

asp:CustomValidator ID="CustomValidator1" runat="server" ClientValidationFunction="checkTypeTreeview" ErrorMessage="CustomValidator" Display="Dynamic" ValidationGroup="Step1">Vnligen ange En rendetyp</asp:CustomValidator

<br

Javascript, OnClientNodeChecked from treeview above

var oldNode;

function nodeClicking(sender, args)

{

var comboBox = $find("ctl00_phContent_pbCaseRegistration_i0_i0_cmbCaseType");

var node = args.get_node()

if(oldNode != null)

{

oldNode.set_checked(false);

}

node.set_checked(true);

oldNode = node;

comboBox.set_text(node.get_text());

comboBox.trackChanges();

comboBox.get_items().getItem(0).set_text(node.get_text());

comboBox.commitChanges();

comboBox.hideDropDown();

}

Javascript event from validator in aspx above

function checkTypeTreeview(source, arguments)

{

var treeView = document.getElementById("ctl00_phContent_pbCaseRegistration_i0_i0_cmbCaseType_i0_tvCaseType");

var checkBoxes = treeView.getElementsByTagName("input");

var checkedCount = 0;

for (var i = 0; i < checkBoxes.length; i++)

{

if (checkBoxes[i].checked)

{

checkedCount++;

}

if (checkedCount > 0 && checkedCount < 2)

{

arguments.IsValid = true;

}

else

{

arguments.IsValid = false;

}

checkedNodes count 0

2 Answers, 1 is accepted