I have a treeview control where I am dynamically selecting a node depending on user interaction. when a node is selected I want to be able to have the scrollbar go to the location of that selected node in the tree. The scrollbar is simply made by overflow:auto in the div tag where the treeview is located.
View 1 Replies<asp:TreeView ID="TreeViewCategories" runat="server" ExpandDepth="0" Style="min-height: 200px;
max-height: 500px;" LineImagesFolder="~/TreeLineImages" NodeIndent="0" LeafNodeStyle-CssClass="LeafNodesStyle"
CssClass="TreeView" NodeStyle-CssClass="NodeStyle" ParentNodeStyle-CssClass="ParentNodeStyle"
[code]...
how to read selected node and its parent node values for treeview in asp.net in JAVAscript.
View 3 RepliesI have a treeview with four levels; parent, child, grandchild, great-grandchild. My selectednode is at the grandchild level.
What I'm trying to do is to create a new "Treeview" at the grandchild - NO, I dont wnat to create a new node to the "selectednode" (grandchild). So it should be somelike this:
[Code]....
How do I get the value of a treeview's selected node and it's children's values?
TextBox1.Text = TreeView1.SelectedNode.Text; doesn't do it.
How can I get selected node text and value of asp.net treeview via jQuery?
View 1 RepliesI have a treeview and I am giving the node style in code behind.
Treeview design is as below:
<asp:TreeView ID="tvIARHierarchies" runat="server" NodeIndent="15" ShowExpandCollapse="true"
ShowLines="True" Width="98%" OnSelectedNodeChanged="tvIARHierarchies_SelectedNodeChanged">
<ParentNodeStyle Font-Bold="False" />
<HoverNodeStyle Font-Underline="True" ForeColor="#6666AA" />
<SelectedNodeStyle Font-Bold="true" BackColor="#6f9dd9" ForeColor="White" />
<RootNodeStyle />
<NodeStyle />
<LeafNodeStyle />
</asp:TreeView>
While populating the tree-view I have a requirement to bind the one particular level with a different colour. So, I am binding it as below
foreach (DataRow row in dr.GetChildRows("rsParentChild"))
{
TreeNode cChild;
if (row["NAME"].ToString() != "")
{
if (row["Level"].ToString().Trim() == "4")
{
string strColor = "DarkOrange";
string fname = "<font id=" + row["NAME"].ToString() + " color ='" + strColor + "'>" + row["NAME"].ToString() + "</font>";
cChild = new TreeNode(fname, row["ID"].ToString());
}
}
Now when the tree view loads, the required level 4 nodes are populated in DarkOrange. But, when any node is selected the backcolour changes as #6f9dd9 as per the style specified in the markup. But the fore-colour does not change.
Suppose I have a treeview, where each treenode contains an id for a different set of user controls. When the user clicks a node, these controls should be loaded to the page. As I understand the ASP page life cycle, dynamic controls should be added in the initialization stage, and postback events will fire later on.
So if the treeview click event happens after I need to add my controls, how do I dynamically add controls based on user postback events?
Edit: I tried the ArronLS:
What I did was add the node value to the session array, and use that when I do the init to choose which form elements to load to the controls of a placeholder control. On the treeview click event, I update the node in the session array, clear the old form elements in the placeholder, and add the new form elements to the controls. When the page is loaded again, it should now find the node at init time, so viewstate problems would be circumvented.
Now I haven't fully tested this yet, but there was another similar post that talks about the problems that might result with the viewstate. They suggest a solution that polls the Request[] part of the context (in their case the dropbox) within the Init control, manually handling some of the postback functionality.
My new question is how to I access the selected node in the treeview using the Request array?
Im using an asp.net treeview control and i managed to get code from these forums so that when i select a node no postback is done but i can access the selected node in my C# code behind pages by using javascript.
It works fine i can get the selected node by saying:
TreeNode t = TreeView1.SelectedNode;
and then displaying it to a label on an on click event of a button:
Label1.Text = t.Text;
But what i really need is to either display the node selected to a label (or textbox) or when a node is selected it needs to be highlighted so that the end user knows the option chosen is selected.
i ve used the following code to avoid postback and selected node style for treeview by using this im able to avoid postback but im not able to set selected node style.
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I don't want to use Sessions to handle each click event inside treeview selected node changed.Secondly, if you suggest me to use treenode.SelectedValue then I would say my values are dyanmically generated.Everytime a node a clicked, the selected node value is sent in the next request xml to get response and xml schema is different for each click. How do I handle this each click event other than using session variables. I thought of using Request.Item (and integrating with URL redirect property) but I don't want to use that.
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Am new to asp.net.I am creating a site using asp.net(C#), in master page i have treeview control, when i select a item i navigate to url. But selected node is lost, it reset itself, loosing state.
View 4 RepliesI am having treeview with checkbox and 1 submit button it is taking values from database. Now if i check the checkbox and click the submit button it should display the selected node in the textbox..... Here is my treeview code
public void Load_tree() {
DataSet PrSet = PDataset("SELECT * FROM tbl_saleschannelhierarchyconfig");
TreeView1.Nodes.Clear();
foreach (DataRow dr in PrSet.Tables[0].Rows) {
[Code] ....
And button click code
protected void Button1_Click(object sender, EventArgs e) {
txtRetailCustomerGroup.Text = TreeView1.SelectedNode.Parent.ToString(); }
It is showing this exception "Object reference not set to an instance of an object."
I want to show treeview text by click node in next page. but it shows blank. here is my code
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not IsPostBack Then
tvSPLooping()
End If
End Sub
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I have a button(by default disable) to create new folder, when I select the treeview node. Button will be enable on treeview node selection. On click of button.pop up window will open with textbox. I will insert folder name in textbox and submit it. Now New folder should create under selected node of treeview.
View 1 RepliesI have a tree view created in my HTML Page
[code]...
now i want to hide the Stats node in the page load function in my code behind....
if tree node does not have tag property like windows treeview control then i just want to know how could i attach the tag property with each tree node.
View 1 RepliesI use asp.net 4 and c#. I have a TreeView and I would like select an existing node programmtically.
SelectNode() method is read only
[URL]
so I do not know how to do it. TreeView WEB CONTROL not for Win App.
My Code:
protected void uxTreeView_DataBound(object sender, EventArgs e)
{
TreeView myTreeView = (TreeView)uxManageSlotsDisplayer.FindControl("uxTreeView");
myTreeView.Nodes[2].Selected = true;
}
Is it possible to get the unique URL of an expanded treeview node? I need to be able to send the URL to someone and he should be able to navigate to that particualr node from the URL.. so I guess I need to somehow use a query string with the treeview control?
View 1 RepliesI have a question that is very simple to answer, I have a treeview control populated by a sitemap file, what I want to do is to assign a different image to each node/leaf of the control, let me explain a little bit more, this what I have in my sitemap file:
[Code]....
So I know that a different image can be placed for root, parent, leaf and node on the code, but I want a different image for each leaf in the treeview... I know that the easy way to do what I want is to edit/add nodes in the control BUT I populated the control from a sitemap file, so is there a way to put a different image in each leaf of a treeview control being populated from a sitemap file?
I want to know how Can I check the checkbox of a asp.net tree view node ( it can be either parent or child) based on matching a condition from the code behind?First Im getting all the nodes from the database. After that I want to check the checkbox corresponding to the ID which that user is a part of.
View 2 RepliesI'm trying to get my treeview control to work where a user clicks on a parent node. The node will expand.Then, the user clicks on another parent node and that node expands while the previous parent node stays expanded. My problem is that when I expand one parent node, another expanded parent node collapses.What am I doing wrong?
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I am used treeview control within updatepanel,updation was no problem but i am unable to control treeview node expand and collapse.
Does anyone know a way to limit the amount of text that is displayed by the Treeview control for a node?
I know there is a property to warp the text but I want to perhaps limit the text size to say 20 characrters?
I am using a treeview control and just want to add nodes dynamically. On selecting a node the results based on that node must be shown below.
View 1 Replies