"data" : will go through the Json data and create a ul structure from it and put that into the div. Then in your view, you simply need one div that holds the tree: Īnd this javascript that will populate it: ViewBag.Json = JsonSerializer.Serialize(nodes) Parent = item.ParentId = null ? "#" : (), First retrieve your data from the db into a List of items, no sorting is required. I am working in ASP.Net Core 3.1, so I use to serialize the data. Here's my code that loads the data into a List. First, the model that holds each node's data: public class JsTreeModel I found I didn't need TreeCollections at all. Update: I was able to load and display a hierarchical tree on my web page with very little code, using jsTree. If you want to pre-load your data into a tree structure first, like I am doing with TreeCollections, then perhaps populating a structure will work, but it will still need help with javascript if you want to interactively show/hide branches on the tree. There are two good lazy-load implementations of JSTree on SO here: Lazy-loading TreeView with JsTree in Asp.Net MVCĭepending on the size and depth of your tree, if you can pull your data dynamically as the user navigates the tree, this might be the best solution. I think we will have to use at least some javascript. You mention JsTree, and I think that is a viable option, but it's not html-only as you specified. Now to display the data on a web page, I don't think Microsoft has any tools to help us. You might want to look at that for your tree data structure. I have implemented that and can successfully build one or multiple hierarchical trees from my data. I have also looked at Telerik and Syncfusion, but am trying to avoid paying for a solution.įirst, for the data structure, I did find a NuGet package called TreeCollections written by David West here: You are right, there is a TreeView for ASP.NET Core, but it's for Windows Forms and not web pages: Right Click on App_Code folder under Solution Explorer > Add > New Item > Select MVC4 View Page (Rozar) > Enter Name (here "Treeview.cshtml") > Add.Tony, I have been searching for the same thing also. Go to Solution Explorer > Right Click on Project name form Solution Explorer > Add > Add ASP.NET Folder > App_Code Step-5: Add a new ASP.NET folder "App_Code" Go to Solution Explorer > Right Click on Project name form Solution Explorer > Add > New item > Select ADO.net Entity Data Model under data > Enter model name > Add.Ī popup window will come (Entity Data Model Wizard) > Select Generate from database > Next >Ĭhose your data connection > select your database > next > Select tables > enter Model Namespace > Finish. Open Database > Right Click on Table > Add New Table > Add Columns > Save > Enter table name > Ok. Go to Solution Explorer > Right Click on App_Data folder > Add > New item > Select SQL Server Database Under Data > Enter Database name > Add. Go to File > New > Project > Select asp.net MVC4 web application > Entry Application Name > Click OK > Select Internet Application > Select view engine Razor > OK Here in this application we will create our own custom HTML helper for display hierarchical data in treeview. Today I will show you, how to create treeview in MVC application. Also, There is no any HTML helper class method that will provide treeview for the UI. The TreeView will be populated using recursion. Download Code Demo In this article I will explain with an example, how to populate or bind TreeView from database in ASP.Net using C and VB.Net. The ASP.NET TreeView control makes it easy for us to display a hierarchical collection of labeled items, but MVC does not support server-side control like ASP.NET. TreeView Here Mudassar Khan has explained how to populate or bind TreeView from database in ASP.Net using C and VB.Net. In this post, I am going to explain how to create treeview with database data in MVC application. In the previous article, I have shown you how to implement treeview in asp.net webform application.
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