![]() ![]() ' traverse the tree and display all the child nodes. ' Recursively call the Displa圜hildNodeText method to ASP.NET and SQL Server- How to Display Data on or Bind/Populate GridView Angular JS Bind Table Grid from SQL Database in ASP NET MVC C MVC Display Data From Database With Linq To SQL. ' Iterate through the child nodes of the parent node passed into Sub Displa圜hildNodeText(ByVal node As TreeNode) ![]() Message.Text = "The TreeView control does not have any nodes." ' Iterate through the root nodes in the Nodes property.įor i = 0 To - 1ĭispla圜hildNodeText(LinksTreeView.Nodes(i)) ' preorder traversal of the tree and display the text of each node. ' If the TreeView control contains any root nodes, perform a Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load So it now looks like the code as follows, and I can move on from here: Changed what the label called 'Message' is displaying on the page under Sub Displa圜hildNode(byVal.) from Copied this example ALMOST EXACTLY ** AS WRITTEN EXCEPT put the script into the codebehind (putting it all here for anyone interested)Ģ. Got a VERY simple answer here, works like a charm! I can move on from here.ġ. Wasn't quite sure to do with what you provided, so kept looking. It's okay if any response is in C#, but vb.net would be great! For Each dr As DataRow In dt.Rows) or cause it to remain available for the math functions, or if necessary, create a new datatable that stores the node's value and the depth. Bind/append that information to the DataTable row (i.e. Find the depth for EVERY node in the tree on Page Load after the tree construct is present, without having to trigger a SelectedNodeChanged eventĢ. This is the best, easiest, and fastest way to make tree view. This article will guide you on how to display parent child tree view dynamically from the database. StrtLevel = ()īut I would like to know if there is a way to:ġ. In this article, we will create a dynamic tree view menu fetched from the database, using ASP.NET MVC 5, C, Razor and SQL Server 2014 (using Visual Studio 2013). I understand how to, in simple form, make this work when the event SelectedNodeChanged is triggered, i.e. I need to do some simple math to return a result based on the depth of any node in the treeview. ![]() I have created an asp.net TreeView bound to 2 tables in my database in the code behind, and coded in vb.net, that is working fine.Īll levels are expanded by design when the TreeView appears on Page Load. Refer to the following code block for more DataBound TreeView - Determine Level/Depth of Each Node in TreeView You can be able to prevent the multiple expand of tree view nodes by specifying enableMultipleExpand as false.įor example, if you want to allow only one node to be expanded in tree view at a time. The tree nodes can be expanded or collapsed by clicking the expand/collapse icon of the node or in code behind by using the following methods.Īlso you can get all the expanded nodes index in tree by using the getExpandedNodesIndex method that returns the array of expanded node indices. moveNode ( "5", "2" ) Expand or collapse node ejTreeView ( 'instance' ) //to move tree node which having id 5, to child of node which having id 2. only after control creation you can get treeObj otherwise it throws exception. create an instance from an existing TreeView. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |