I'm looking for a way to create the treeview structure in memory with a classes, so I can loop through them, like with a collection and easily load the data into a treeview, listview, datagridview or simply work with the data in the background.
There's a treenode class that I could use, but I've noticed that when I have a lot of data in the nodes, it has a lot overhead when for example serializing, because it also saves the checked state, imageindex of the nodes and things like that, which I never need. The saved file is about 10 times bigger than the actual data, which is not acceptable.
I want to create a user defined data structure, which will be a 2 dimensional array such that each individual square of this 2-dimensional array will also store the score and the grades. ( Iam using VB.NET) More details: for example: There is an 2 dimensional array with 3 columns and 2 rows, I want to fill each of the
I have a self referencial table Which contains fields Like ID, Name, Parent ID. By Using this table I wish to show records in crystal report Like a tree view format Like
Is it possible to add roots and children to the tree structure when the application is running. Im trying to build an application that has two modes - Browse and Edit. In Browse mode, I just want it to be a simple tree structure however in edit mode I would like the user to be able to make changes to the tree structure online(Add Sub Level, Delete level, create new root). Is this possible through VB alone or would I need ASP or Javascript??
I have something that is working for the most part, but I'm having some trouble with restricted-access folders.
The code I'm using is as follows: Imports System.IO Public Class frmMain Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load For Each drive In DriveInfo.GetDrives [Code] .....
For testing purposes I replaced this section... If drive.IsReady Then PopulateTree(drive.ToString, TreeView1.Nodes(i)) End If ...with this... If drive.toString = "L:" PopulateTree(drive.ToString, TreeView1.Nodes(i)) End If And it worked fine for that drive. The L: is a removable USB drive by the way.
However, with the original code I get debug errors on some folders because they are access-restricted. Is there any way to ignore those particular folders and show the rest?
Just wondering how I can populate the child node in the following coding (I am able to populate the parent node but still wondering how to list out the child nodes)
===Extra Info=== I have a class to retrieve the Category Table (CategoryID, CateogryName, ParentID) and stored it via List<T>, when I need it, I declare CateogryDAL pass it to CateogryData.
I am trying to find a quick, step by step tutorial on on to implement a tree view for my intranet that will show all the computer accounts in my domain. (this is obliviously only step number one, because once i can see them, I want to be able to query information from them.but one thing at a time right?)
Is it possible and if so, how does one go about doing such a thing. I am loading a network directory in a treeview. Can the parent node be disabled, meaning it can't be selected, it's available for viewing only, but leave the child nodes selectable?
I am loading the directories from my C drive into a treeview using the code below. It takes forever due to the number of folders. Is it possible to have this only populate down 1 level and then use a NodeMouseClick Event to drill down further, in the same treeView, if the user desires to do so? How would I amend this code to do this?
The following code worked with 2.0 Framework, now with NPGSQL 2.0.11 and framework 4.0, this is erroring out despite Pooling=False for the connection. The underlying logic is that add nodes to treeview; for each node added, immediately get subnodes and populate...
vb Private Sub LoadRequirements(ByVal parnode As TreeNode) Try Dim CMd1 As NpgsqlCommand CMd1 = New NpgsqlCommand
I am Developing a Application, originally i had divided a form by splitter and on left Treeview and in Right it was DatagridView. Now the requirement is to add treeview in same window. That is either Listview with Treeview in it OR DatagridView with Treeview in It.
