Loading Database Into Treeview In Groups?
Sep 13, 2010
I'm thinking about using the treeview for creating a phonelist. The issue here is that I can't think how to load the data into the nodes according the group they are categorized in.
Here's a screenshot of my test_database:
So there is an ID and a row with groups (groep). What I want is that when loading the data a DISTINCT node gets create for each group and that the person is added to the sub-node. Got the faintest idea where to start.
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Jun 6, 2009
Getting error messsage "Conversion from string "l.name" to type 'Integer' is not valid." on the higlighted code below. I've tried using the 0 and 1 as the first field "l.name" in the mySelectQuery and 5 or 6 for w.wellNumber.I want the treeview to show each Lease name or field l.name and each w.wellnumber under that lease. The msg box shows me the correct number of records is being retrieved.
Private Sub Load_treSelectWell()
Dim myConnString As String = "integrated security=SSPI;data source=.\ECOLOGICSSQL;persist security info=False;initial catalog=EcoLogics;"
[code].....
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Nov 16, 2010
im using vs2010 and SQL server 2005. what is the best and fastest way to load large volume of data into treeview
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Nov 23, 2010
I currently have a procedure that stores the Level, Parent.Level, and Text properties of each TreeNode in a TreeView control in a DataTable.I can't seem to come up with the logic to load this data back into the TreeView from scratch, though.
Below is what i currently have in place which does not work.
Private Sub LoadTree(ByVal table As Data.DataTable)
treeBilling.Nodes.Clear()
For Each row As Data.DataRow In table.Rows
[code]....
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Mar 23, 2011
I'm loading a folder (path), which contains folders and files, in a treeview according the combobox-text.
When I load the app. the combobox is filled with the paths. I'm using the SelectedIndexChanged to load the treeview. Everything works.
The issue is that it also starts to load the paths the treeview also gets loaded (slow), but it should only load when I select an item in the combobox.
I tried comboboxselectedtextchanged etc, but without any luck. Besides that loading the files and folders is slow.
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May 14, 2011
I have a problems with my application..
1. collapse and expand treeview when i click plus sign (+) on treeview, treeview didn't expand subfolder but when i click image, treeview expand it.
2. showing path that i check on treeview when i check the treeview then i'm click the button, then return path that i check
This is my code..
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Nov 15, 2011
I have been looking for a some working code for the last couple of days to set up a treeview in my WPF app to display some database data. I use VB as i am much more confident in it - which drastically limited the code examples out there. More examples i found used manually entered data to populate each node versus a database which was little help. I finally found some code which bound the each node to a query and related the query via a DataRelation. Great this should work perfect!
The example used the Northwind database so I changed it to my database and plugged in the queries. To my shock the treeview populated fine except.... all the data is invisible.
Here is the code:
Imports MySql.Data.MySqlClient
Imports System.Data
Imports System.ComponentModel
[code]....
and here what i end up with the data seems to be there but you can't see it.PS there may be some confusion as to the objects. I went back tried to keep as close to the original code as possible when i discovered the problem only replacing the queries with my own - the original code used "Categories" and "Products" where as I "use Distributors" and "Titles"
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Jun 11, 2009
I am really stugling with this an was hoping that someone has done this in the past and can lend some guidance, I have had a look on Google but I only seem to find examples of one parent and one child.Anyway back to the problem, I have a treeview on a form and I want to allow the user to create a tree structure of their choice. What I mean by that is no limit to parent and child combinations, so basically have the same functionality as in Window Explorer.Now comes the problem, what I want to be able to do is store this tree view hierarchy in a database, so that when they add a new node to the treeview it is stored in the database at the correct level. Then if the user closes the form and re-opens it loads the treeview hierarchy from the database.
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Jun 11, 2009
I am really stugling with this an was hoping that someone has done this in the past and can lend some guidance, I have had a look on Google but I only seem to find examples of one parent and one child.
Anyway back to the problem, I have a treeview on a form and I want to allow the user to create a tree structure of their choice. What I mean by that is no limit to parent and child combinations, so basically have the same functionality as in Window Explorer. Now comes the problem, what I want to be able to do is store this tree view hierarchy in a database, so that when they add a new node to the treeview it is stored in the database at the correct level. Then if the user closes the form and re-opens it loads the treeview hierarchy from the database.I would really apreshiate some guidance on database table stucture and how I can loop through and build the treeview
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Nov 11, 2011
What is the best to load a treeview from a database where it goes 4 deep
Parent
child
child
[Code]....
How would that look in a database? and then how would you load the tree. I can load everything up to the grandchild, but as soon as I load the great grandchild I start having issues. So I am thinking it is the way they are in the database.
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May 12, 2010
how to populate a treeview from a SQL datbase. I have been looking on the web but I have not found a lot and wwhat I did find show some things that, like child nodes that I cannot find. Basically I am pulling orders from the Northwind database and want to have a branch with an order and off this branch the with the ID of the order details. So when the they click on the order node it expands to show the orderdetail ID.
I get the a branch, weiht the code below, with the order IDs but cannot get the child branch.
my code
Public Class Form2
'Dim TreeView1 = New TreeView
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
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Aug 12, 2009
I have the code below, what i have is three volumes called vol2 vol 3 and QRH (these are parent nodes in a treeview), these nodes are named in my database in a volume column 2,3 and 4 respectively. what i want to do is run a query that populates a treeview with another column depending on which parent node is clicked.
A drawing
Volume Parent node name (in treeview) child node
2 vol2 flightpath
3 vol3 takeoff
4 QRH landing
2 vol2 data
and there are more than one child node that has volume 2,3 or 4 what i want is if vol2 is clicked this is oppened
vol2
---Flightpath
---Data
etc etc
below is the code i am working on:
If tvwFCOM.SelectedNode.Text = "vol2" Then
Dim Volume As String = "2" And
Query = New OleDb.OleDbCommand("Select Title From " & cmbFamily.Text & " _Chapters Where Volume = '" & Volume & "'", AccessConn)
End If
If you're not living on the edge, you're taking up too much room?
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May 13, 2011
I'm trying to create nodes from a .sdf database according to a specific value in a combobox.[code]...
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Jun 11, 2009
I have a treeview on a form and I want to allow the user to create a tree structure of their choice. What I mean by that is no limit to parent and child combinations, so basically have the same functionality as in Window Explorer.
Now comes the problem, what I want to be able to do is store this tree view hierarchy in a database, so that when they add a new node to the treeview it is stored in the database at the correct level. Then if the user closes the form and re-opens it loads the treeview hierarchy from the database.
I would really apreshiate some guidance on database table stucture and how I can loop through and build the treeview
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Nov 8, 2010
I want to create a treeview from a database in my project. I have been using linq to retrieve data. I have TeamLeaders, Marketers and Clients. When i expand the TeamLeaders node i want to see the Marketers under that node and when I click on the Marketer. I want the list of clients under that Marketer to be displayed on the right panel that has a gridview. TeanLeaders and Marketers are from one table and Clients in a different table.
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Jan 9, 2010
Private Sub DisplayTreeview()
Try
tv.Nodes.Clear()
Dim i, j As Integer, ds1 As DataSet
S = "select * from Product where PdtRoot=''"
[Code] .....
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Feb 5, 2009
finding a solution on how to save a four level treeview on each table in the database? each level must be saved in the table w/c includes their parent-child relationship.
[Code]...
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Dec 24, 2009
I would like to connect my database to a treeview. Here is my code so far. It is connecting BUT i have problem. SEE the image below
[Code]...
The image below is showing my problem. The Groups are all shown. I would like to see 2A , 3A, 4A ...(so only ONE 2A) .and so on... and then click on the node to open with all the students in that group...
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Sep 19, 2011
having trouble understanding databases in visual 2010.
I have a database, which is loaded into a table adapter when the form loads. I want to assign each column of the table adapter into an array
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Oct 17, 2011
I am developing a windows application.In that I am loading Menu dynamically from database.And on MenuItem_Click event I am opening the forms with respect to the clicked menu.For this I have a code as
Select case MenuId
case "1"
form1.show[code]....
Now What I want is: I want to save respective forms for the menu also in the database so that i dont have to write select case. so on MenuItem_Click event my should look like
form(value from database associated with clicked Menu Item).show
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Oct 10, 2011
The question says it all, I can connect/Open a Access DB and I can setup a Treeview but how can I bind them together?
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Aug 15, 2011
I start program for a library and I have to use Treeview and Access DataBase..I find methode to load database to treeview but the problem is save changes after I run program Access Database load to treeview and I edit tree but how I can save changes before I close program?
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Jan 13, 2010
i have a custom SiteMapProvider which I populate from a database. I also have a custom SiteMapNode which has to be constructed with a custom Page argument.[code]Should I return false in AuthorizeCore() to have everything work according to default authorization protocols? (What are these?) Or should I throw my exception.SiteMap.CurrentNode is Null / Nothing (in AuthorizeCore()) if the page which is requested is not accessible to the user (obviously). How should I change my implementation? I want to keep the functionality that the Page objects are only loaded once, so I need to store them somewhere.
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Apr 28, 2009
im trying to load a database and I get this error.
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May 8, 2011
i have access database connected to application.. i have a table in database called "clanovi" (members) and first column items loaded to combobox their name and surname..now..when i select one of them from combo box i need all their other info loaded into several text boxes..adress,email etc..all of that info is in the same table ..i need some example code too .
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Mar 11, 2009
how to load the contents of an Access Database table into a Dataset? The Access Database consists of multiple tables with different data table names but all tables has same row header and same data type.
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Feb 9, 2012
I have a code wherein datagridview will load according to the query given.I have no problem with that but when i put a loading image while reading the database, loading image wont work as well as if i put only "Please Wait" to a label.I searched from google and said that backgroundworker sahould use to this problem. But how can i use the backgroundworker?i have no idea about it.
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May 9, 2011
i've got access database connected to my project,i can read,write and delete records in it..what i need now is when i select one item from combobox (which is connected to table "clanovi"(members) and it loads their name and surname which is the first column of that table..now when i select one item from that combobox i need other info of members their adress,email,city etc to display in seperate textboxes..this is the function that my friend made for me..it connects to the single table in database,in this case to table "clanovi" .
Public con As New OleDb.OleDbConnection
Public dbProvider As String
Public dbSource As String
[code]......
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Dec 30, 2009
I am using Dynamic Textboxes. I am Loading table in Datatable from Database. From that Datatable i am naming the textboxes. After entering some values in the textboxes during runtime, i want that values to be added to the database. So i Coded as below. But i am getting errors as value of type '1-dimensional array of System.Windows.Forms.Control' cannot be converted to 'System.Windows.Forms.TextBox'.Here's my coding
Private Sub btn_click(ByVal sender As Object, ByVal e As System.EventArgs)
[Code]...
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Jun 6, 2009
Code:
Sub laad_leden()
Dim myConnection As New connectdb
Dim tabel As New DataTable
[CODE]...
While loading the data to the program the window freezes. It shows the progressbar but the progressbar is also freezing. How can i let the progressbar marquee while loading / freezing.
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