Query for updating a node in a hierarchial tree structure Chatadultos

One of the new controls, also my favorite, is the Tree View control. Microsoft has developed it based on feedback which arose from the release of the Tree View control in the open-source IE Web Controls package, targeted at the previous version of ASP. Tree View has not just been rewritten; it now also includes a major set of new features such as support for client-side populating, on-demand populating, postback events, hyper link navigation, and a lot more. Asp Alliance Register Edit My Profile Author List Write for Us About Asp Alliance Contact Us Privacy Policy Link To Us Advertise Subscribe Free Newsletter Newsletter Archive RSS Syndication . NET 2.0 Examples ASP Tutorials Learn ASPLearn VBScript Learn JScript Learn SQLLearn XMLSoftware Resources Shopping Cart Ecommerce Charts and Dashboards Other Resources Learn Java Learn Oracle Opinion / Editorial Crystal Reports Alliance WPF Resources AJAX Resources Silverlight Resources Free Tools Cache Manager Simple CMSReviews Book Reviews Product Reviews Expert Advice Books ASP. Page{ protected void Page_Load(object sender, Event Args e) private void Populate Root Level() private void Populate Nodes(Data Table dt, Tree Node Collection nodes) private void Populate Sub Level(int parentid, Tree Node parent Node) { Sql Connection obj Conn = new Sql Connection("Data Source=localhost; Trusted_Connection=true; DATABASE=swabhiman;user id=sa;password=sa;"); Sql Comman Hi Ryan, Thanks a lot for the idea and suggestion.

With this code and data, I can see that I can do as many levels in my menus/treeviews as I like, based around the parent id settings for each option. Once I concluded that, I just type casted it to an Int32.

In another one, I had to use the C# funcion Convert. The functions work to populate a Tree View with the table you layed out.

Conclusion We have set up a working Tree View relatively easily. I achieved this by defining the number of nested repeater controls in the aspx page but I would like to do this dynamically based on the number of nesting in the data (say a list source).

This approach requires a little bit of code, but shows that it’s not really because of the Tree View control but due to the nature of hierarchical data. Can I use the treeview control to display a table at each node level ??

Next, we start looking at the code in the Tree View vb file. This has the effect that the expand/collapse icon is shown if the node has child nodes. Page { protected void Page_Load(object sender, Event Args e) private void Populate Root Level() private void Populate Nodes(Data Table dt, Tree Node Collection nodes) private void Populate Sub Level(int parentid, Tree Node parent Node) { Sql Connection con = new Sql Connection(Configuration Manager. To String()); Sql Command cmd = new Sql Command("select id,title,(select count(*) FROM categories " "WHERE parentid=sc.id) childnodecount FROM categories sc where parent [email protected] ID", con); cmd. : DEVERYONE with a parent has a parent ID in my table, so when I do this it actually works (using ID instead of NULL), but then I get all her children, grandchildren, great grandchildren, etc.) Don't want the db doing that much work. Its good but can any budy help me to make Vertical Binary Tree with or with out free Tree Controls.

Next, we want to create the routine to populate the child nodes of a given node. Listing #4 Here, the idea is the same as with the root level, but with the distinction that only child nodes of the given node are queried and populated with the Populate Nodes method (described earlier). I try Fly Fly Tree View but its not free does any budy have the solution???????????? Thank you very here is code for add Treeview to Database Private Sub Get All Children(By Val parent Node As Tree Node, By Val str Parent ID As Integer) For Each child Node As Tree Node In parent Node.

I had to enclose the content[not the using statments] of the code behind page in a namespace where the namespace was the project name. Have been looking for a way to do 3 level menus for a while, as I had found some code that could do 2 levels, but wasn't easily adaptable for 3 levels.

Was able to adapt this to suit a horizontal menu as well as horizontally arranged treeviews. I had to convert your code to C#, but that was easy except for two problems I had. I spent a good hour searching MSDN for CInt in C# but all the articles were in VB so I guess C# doesn't have one.

NET developers have very interesting times ahead of us.

Along with the new Framework, we have a major set of new controls to use and to ease our development work.

Rows) { Tree Node tn = new Tree Node(); Thanks, your idea is great.

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