I have a DataTable that has a hierarchyid data type column pulled from SQL Server. Is it possible to use the column to easily populate a treeview object in Visual Studio 2008?
View 7 RepliesI am trying to populat a treeview with nodes that are the values of a column in a datatable. I have managed to get the correct number of nodes but the text is not displayed next to the nodes, there is just a 3 shape but the other way round and with square corners shown.
The code is below. I would like to have these parent nodes populated on the form load and then (i think this is what i have read) to be quicker i would like to then load the childnodes once a parent node has been selected, as i don't want to load the whole database on form load or when the form is refreshed.
Here is the code with more dtails below:
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I have a window application created in VB.net 2005 and the backend is sql. I make a call to the database and it returns a datatable. When I loop through it, I get a value of -1 for my field "Rush" which is a bit datatype. when I pass the sql into the analyzer, I see the value should be a 1 so not sure why it's giving me a -1. Here's some of the code that's in the page: Dim tblSendEmail As DataTable
tblSendEmail = oService.GetSendEmailInfo 'Goes to a webservice and returns a record set in the datatable
For Each row As DataRow In tblSendEmail.Rows
iRush = row("rush")
next
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I have a datatable that I read xml into.
One of the columns is a date, but the dataype of that column is set to string. Is it possible to change that dataype to date?
I want to change the DataType of all columns of DataTable. I don't want use the loop.. [URL]
View 6 RepliesI have a query to retrieve DateDiff in my SQL:
SELECT Convert(char,DATEDIFF(m, Temp.Opening_Date, '2011-05-01')) As MonthDifference From Temp
It was successfully retrieve the data from SQL Server. But when I bind it to my vb.net datatable, the value is null. It's seems like vb.net datatable doesn't support datatype from DateDiff... What can I do?
I have a datatable which has a number of rows containing dataThen I need to add some empty datacolumns which I do like this:
Code:
Dim OT_Hours As New DataColumn("OT_Hours")
OT_Hours.DataType = System.Type.GetType("System.Double")
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I'm running out of walls to bang my head against. Okay new windows form with a textbox, button and TreeView Populate the TreeView.nodes with the default nodes via properties
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I want to click button1 and have the name of the childnode? Node3? placed in the textbox. Not via selection, I can do that. But via index or item number. The code I have is as follows
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I have this code that use to sort a datatable.
Dim sortingIndex As Integer = orderby
Dim DataTableNew As DataTable = New DataTable
DataTableNew = dt.Clone
Dim query = (From c In dt.AsEnumerable Order By c.Field(Of String)(sortingIndex) Ascending)
query.CopyToDataTable(DataTableNew, LoadOption.OverwriteChanges)
My problem is that with this method I always need (Of String) for it to work, so the date columns are also managed as Strings witch is the problem. Is there a way to use the correct type so the sorting is based on the type of the column?
I pull a report from SQL Server being not a fan of cursors I process that table server side in my code behind file. So I pull this report that is an address label report and my client wants there to be X number of labels per person. So I coded this function:
Private Function ProcessX(ByVal dt As DataTable, ByVal X As Integer) As DataTable
Dim dtProcessed As DataTable = dt.Copy
dtProcessed.Clear()
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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
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Am trying to populate a TreeView from a TXT file My TXT file look like that :
[STANDARD_DATA 0]
STD_NAME=RED 1260418
BAT_DATETIME=1087475867,
BAT_NAME=BATCH
[code]....
[URL]
i want to make a software where i can populate the treeview from databases. that is done. but i cannot display the data in textbox corresponding to a node from database like the above link. m using vb 2008.. n the code in above link does work..
This is a problem I have been trying to conquer for some time now and haven't managed to deal with. I've looked pretty hard on Google and so on, but most of what I find there is for populating a TreeView from a database. The closest I got was a bit of C# code for populating with a list of file paths. But unfortunately the result is individual roots & branches for each item.
What I'm working on is a message template tool where I'm trying to get the nodes in the treeview, which represents the templates, to populate from an XML file. I'm using DataSets for their simplicity of working with XML. Here's a basic example of the structure of the XML which is imported to the DataSet;
Code:
<?xml version="1.0" standalone="yes"?>
<Templates>
<Item>
[Code].....
So the path to each node will look like RootBranchName. I know this will no doubt require some recursion, but recursion is one thing I haven't fully grasped yet.
I'm trying to populate a treeview from a list of folder path, for example:
C:WINDOWSaddins
C:WINDOWSAppPatch
C:WINDOWSAppPatchMUI
C:WINDOWSAppPatchMUI�40C
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Notice there's no 'C:WINDOWSMicrosoft.NET' or 'C:WINDOWSMicrosoft.NETFramework' in the list.
I am trying to populate a treeview with data from and xml document.
The loading of xml is no problem i have done that a million times over, the problem seems to be able to fill the treeview with content. My problem is this: I have a treeview with this in it:
-Race
|-HQ
|-TROOP
|-ETC...
now... the program loads all units from xml. so when it encounters for instance a unit with a "<class>" tag containing HQ, how do i make it put it in the HQ node? I cant make it put new nodes into existing ones, only into new ones....
In vb2005, I have to load a treeview control while loading the form so make the form loading more effective therefore I use Background worker to populate treeview. I tried treeview to pass by ref and faced the error Cross thread operation not valid: Control accessed from a thread other than the thread it was created on, which makes sense.Now I want to load treeview in background and return its object then assigning it: Is this the right mechanism?
View 2 RepliesIn vb2005, I have to load a treeview control while loading the form so make the form loading more effective therefore I use Background worker to populate treeview. I tried treeview to pass by ref and faced the error "Cross thread operation not valid: Control" accessed from a thread other than the thread it was created on..", which makes sense.
Now I want to load treeview in background and return its object then assigning it : Is this the right mechanism?
I'm trying to populate a treeview on a windows form app with Hierarchical data from a SQL db.[code]...
View 1 RepliesI am trying to populate a TreeView in silverlight, but I am having some difficulties - it always appears empty.I found a good tutorial (here) on how to do it, I created a new project and copied the code as it appears, using C#, and it worked perfectly. I have now tried to incorporate it into my project (which uses VB), but It doesnt work. My VB code is as follows:
XAML
<UserControl.Resources>
<common:HierarchicalDataTemplate x:Key="myHierarchicalTemplate" ItemsSource="{Binding Items}" >
<TextBlock Text="{Binding myString}" />[code]....
Edit: I have tried debugging the project, and the "itemsSource" collection appears to be generating correctly, a Is it a display binding issue?
The treeview system I am using is by Andy Bonner from the following Link, as advised I have created a new post.[url]...
Andy you were asking what it is I am trying to do so I will try explain it a little better. The treeview system you have created allows me to import / edit and save XML files based on the treeview structure that I create. What I now want to do is use the same XML files to populate buttons on a form.
So for example if I have 10 buttons on a form then on load it will look at the xml file and change the text of the buttons to whatever the main level of the treeview is.[code]...
how do you make a rectangle without the designer.if the powerpack rectangleshape is the only thing, how do you add it to the form, like controls.add(label) works with other controls
View 2 RepliesI have looked a long time and only found code with c# ans MSSQL, but i want to do this with VB and MYSQL.I populate my treeview with parentnodes with this code. But how do i get the child nodes to the treeview from my childtable?I have parentnodes in one table and childnodes in another.. Or is it better to have em all in one table? I want to have as many childnode levels as possible.My 2 db tables looks like this now:
Table parent looks like this: pID as integer (pk), parentName as varchar
Table child looks like this: cID as integer (pk), parentID as integer, childName as varchar
This is my code now, fetching the parentnodes..
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Page.IsPostBack = False Then
Dim oConn As MySqlConnection = DBConn.getConn("dbname")
oConn.Open()
[code]....
I'm having a little trouble figuring how to do this.I have a dataset with a single table. Each row has the following fields ProductName, Version, CompanyName
The data might look like this
Visual Studio, 2005, Microsoft
Visual Studio, 2008, Microsoft
Office, 2007, Microsoft
I have already populated the TreeView with a list of Company names from a separate table. Now, what I want to do is to loop through my dataset adding a single node for each product under the appropriate manufacturer. Then under each product adding a separate node for each version of that product.
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I'm new to VB.NET (VB6 programmer) and from the various threads i've searched, I have put together the code below to catch duplicates in order to populate a treeview. I'm after the following result:
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I'm a vb.net(2008) hobby programmer and have been asked to come up with a small program that will load comic book information from an Access(2003) database.The database columns are as follows:
ID cPublisher cTitle cVolume cIssueNo cImage I'm attempting to populate a Treeview control with DISTINCT Publishers, Titles, and Volume No.'s (because they will be duplicated), but list ALL of the Issue No.'s individually under the Volume No. TreeNode. The following code works well for the "Parent Node", "Child Node", and "Grandchild Node" without trying to add the "Greatgrandchild Node":oCmd = New OleDb.OleDbCommand("SELECT DISTINCT cPublisher, cTitle, cVolume FROM Comics", oConn)
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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?
View 1 RepliesI'm needing some help with populating a Treeview control using an ArrayList. The ArrayList contains a collection of a class called Task. The class properties contain the following:
1.) taskID (int)
2.) parentTaskID (int)
3.) taskLevel (int)
4.) subTasks (ArrayList)
5.) taskName (string)
Each Task instance can contain subtasks (which is a collection of the Task object), which can also contain subtasks, and so on. The base task starts at level 0. A subtask of the base task would be level 1. A subtask of a level 1 subtask would be a level 2, and so on.
-- The parentID would be the taskID of the parent Task. The parentID at the base task (level 0) would be -1.
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I am trying to populate a TreeView control with a list of all of the OU's that have Computer members in them. I want to populate a treeview list including the OU and the Computer members underneath of those OU's. I tried searching and so far I have found nothing. Here is the code I have so far....
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This is a follow-up questions to the following post: [URL]
Below (Example 2) is working code for populating a treeview with directories only down to 1 level. Note just directores are added- No files. I want to add a Listview control beside my treeview and have the Listview populated with the "files" from the selected node in the treeview. This would fire off the NodeMouseClick event of the treeView. I have used Example 1 (NodeMouseClick) before with other code that I have. However, I cannot get the code to work with the Example 2 code below
how to change the Example 1 code to work with Example 2?
Example 1
'************************************************
Private Sub treeView1_NodeMouseClick(ByVal sender As Object, _
ByVal e As TreeNodeMouseClickEventArgs) _
[Code].....