Populating A Simple Tree From String Data?
May 1, 2010
So another first timer question.I have user entered data from a form that gets put into separate strings. On another form i want this data to populate a Tree view when the user presses a button "Add data". There will be only one stage of parents and child. oParent and oChild. The oParent string will only have like 5 items but the oChild will have like 30 and these will be repeated for each oParent. Not sure how populate this, i cam guessing with some sort of For Each i in oParent, add i or whatever, but not sure of the syntax.
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May 1, 2011
The vb.net code for populating tree view from the SQL Server Database is given in following link: [URL]I tried the code given in the above link to solve my problem but I was unable to change the code of SQL Sever for Postgres Database. I want to do the same thing using vb.net and database Postgres.
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Sep 3, 2010
im trying to create a simple program that send string data through winsock, there are hundresd of tutorials allover the web, but non of them seem to work! I am fairly new to visual basics but i undersatnd the consept of winsock and 'all that stuff'. [code]
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Aug 27, 2009
I'm new to .net. I would like to know how to convert a text data in string or in a file into a simple byte array[ ] format.
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Jun 12, 2011
I am not the original author of this software project and the code is poorly documented. I am mainly a Java/C++ developer.The program displays the tree structure and allows files and folder to be selected. The program is getting errors with FileSystemTreeView when trying to return nodes on a system with a reserved partition.Here is what is happening: tree.SelectedNode = tree.Nodes(0) 'returns error with system reserved partition.calling, GetDriveList() will properly return all the drive letters - and not throw an error. Only when trying to get a tree.Node() or tree.load() is the error occurring.
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Mar 27, 2008
I have a simple windows form that i would like to send the values of a few textboxes and comboboxes to an rdlc report after saving them (I have VS 2005 standard, so no crystal reports) - it's as follows:
-1 form
-3 textboxes - textbox1, textbox2, textbox3
-1 label - label1
-1 combobox - combobox1
-5 buttons - button1, button2, button3, button4, button 5
the textboxes are labeled length, width, height the combobox is labled unit of measure and contains two options - inches or centimetres the label has text of "your total cubic inches/centimetres is:" - followed by the unit of measure selected.the buttons are labeled save, calculate, print, print preview, and exit.Having said all of the above, the save, calculate and exit button code is easy enough and is good to go - it's print and print preview i'm stuck on the solution i'm after is to take those values and send them to an rdlc report that immediately prints (calls up the default printer dialogue) without preview or anything when the print button is clicked and also have a print preview function as well for when of course the print preview button is clicked.The report has already been created with the titles mentioned above..
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Aug 17, 2009
I am trying to build a boggle solver, and this is the way I want to do it.I have a list of 52000 words.I want to Put them into a list as follows.A b c d e f g h i j k l m n o ..... z..Then for each letter, If possible, put each letter.Eg. under m a e i o u y or for q [code]i will look at "a" and then "av" and "ae" and "at" and check if further down the line there is a possibility. If not then I will abandon that line.How will I be able to build this tree database?
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Oct 3, 2009
I thought I was done with the tree view control until i realised that my tree view control was behaving differently when it came to sub nodes . I have attached my treeview pic and also a sample tree view.
(-)D:
|_config.msi
|_netfile.sys
[Code]....
Since I clicked on subfolder1 i was expecting the msgbox to display D:Folder1Subfolder1 but unfortunately the msg box doesnto even have the name of the node i clicked on but when i use selectednode.text I get the correct node text. Anyways why isnt my full path working. I then tried manually designing the entire scenario using tree node editor and the code which i mentioned above works. But whenever i populate the trr programatically the above problem starts.
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Apr 16, 2012
am trying to populate an array like so:
Dim tmpArray As String = ""
Do Until x = Form1.arrayCal.Length
tmpArray = tmpArray & "," & x
[code].....
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Feb 26, 2009
I need to create a new tree view, that is linked to a particular table.
Each row in the table has a parent id that links back to the table's primary key, and that defines the node hierarchy. So that relationship needs to be indicated in the databinding.
Am I able to use the standard treeview control in Visual Studio 2008, or do I need something extra to make this work?
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Nov 15, 2009
I just downloaded VS 2010 beta to try my hand at re-learning (from scratch it seems) some of this to do a somewhat basic app. At the moment I have a tree view and it contains/will contain paired parent and child data. There's a Title (the parent) and a URL (child) and that's it with regard to depth. There will be potentially lots of these pairs. That said there may be some options associated with those pairs that would also need to be stored later. I'm thinking the best way to deal with this is to store the data in XML format but, of course, I've never really done much with XML though I can physically read it. Could someone point me or provide a piece of code that saves and restores a tree? [Code]
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Jul 14, 2011
how to display data through horizontal tree view in the following way:
Diagram :
Z
-----------------
Y X
---------- ----------
[Code]....
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Aug 19, 2009
Can someone help me with this code? I just need to make it so there is no limitation on how much data is loaded in the columns or rows, it populates very nicely for smaller comma delimited files , but if I try to load something that goes for example over to AV column, it errors out.I don't care about VIEWING this data, I am just trying to get it into a LISTVIEW so I can access the data for other methods in my code.Index was outside the bounds of the array. [code]
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Apr 15, 2010
I have made a list of the objects that I need on the datagridview but how do I display my list items onto the grid? How can I make each of my list items populate on an individual rows?
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Jun 8, 2012
I would like to know if i had two columns from a database called SellerID and Product letter in a table called product, and on a new form i want to be able to combine the columns i.e if the user enters the sellerId and product ID e.g 1A in a SellerProductID in a new table on a new for i want the program to do a postback and have the Description Field be populated with the data from the Products ID Therefore the SellerID + Product letter = SellerProductID and it should select the description in the description field.
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Oct 27, 2011
I have a problem loading data to a tree view control using SQL SERVER db as my backend...i just found out that sqlserver dont accept multiple SQLDATAREADER
The code below works in SQLCOMPACT EDITION..
CODE:
I have use this code in my applications using SQLCE as my backend, but when i transfered to sqlserver it doesnt work because of the datareader..
Output is like this
Quote2011[January][February]
2010[January][February]
something like that
If i put it in a single query(sqlYear & sqlMonth), the ouput will be like this
Quote2011[february]
2011[january]
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Mar 28, 2010
I have a chechedlistbox on my form in a windows project, and want to populate the checkedlist box with data that I querry from a table in sql database. I have the code below for the Form load event, but the checkedlistbox is not populated.
[Code]...
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Jul 30, 2011
[VB 2008]. I'm trying to populate a DataGridView based on information in the Items in a ListBox (specifically, the file names without hypens or file extensions) and the content of the actual files. The DataGridView is supposed to look something like this:
IDNon-Hyphenated File NameFile Data
1. Some fileThe sky is blue.
2. Another fileThe grass is green.
The Items in the ListBox (lstFiles) look like this:
C:UsersUsernameDesktopFolderAsome-file.txt
C:UsersUsernameDesktopFolderAanother-file.txt
What is happening is that the DataGridView is being populated, but it looks like this:
IDNon-Hyphenated File NameFile Data
1 Another fileThe grass is green.
2 Another fileThe grass is green.
It's adding the second file's information to the DataTable twice and not adding the first file's information at all.
Private Sub btnDoSomething_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnDoSomething.Click
Dim pattern As String = "([w:\w /]([a-zA-Z0-9-]+?).w+)"
Dim reg As Regex = New Regex(pattern, RegexOptions.IgnoreCase)
Dim mat As Match
For Each Item In lstFiles.Items
[Code] .....
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Jan 4, 2012
I'm playing with an Access database file. And I want to populate a ListView control with Access data. I'm not going to use the DataGridView control. The following is my Access file, which has a table labeled Employ1 with three fields (Usernames, FNames, LNames) as you see below.
[Code]....
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Jan 27, 2009
tried quite a bit of iterations, not a local admin so i dont want to even bother using the data connection wizard, want to do all of this with unbound controls only the harder way for learning purposes and also so i dont have to keep logging in as local admin and create data sources in the future. Cant really seem to get the table to fill, it appears always with blank fields, and tried many different ways. Currently using vb. net 2005 msvs.[code]
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Apr 24, 2010
What I want it to do, is when a id is selected to be modified, another form will pop up with the fields are filled in with the relative data. Every time I run this I keep getting the following error -- "Syntax error in string in query expression '(the wombat ID selected)'"when it gets to the following line of "fillformDataReader = fillformCommand.ExecuteReader()"What is going wrong and how do I go about fixing this error so the new form is populated with the correct data?
Dim fillformCommand As New OleDbCommand
Dim nameView, idView, regionView, sexView, ageView, weightView, lengthView, sampleView, commieView, descriptionView As String
[code].....
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Jan 15, 2011
I googled, searched and tried houres but I can not find a simple code/class that does the following: I have a SQL database and I want to show some colums of a table in a listview... Not so difficult I thought, in VB6 it was fixed in 2 minutes but now I'm struggeling for houres... I found Imports System.Data.SqlClient but further then this, I fail...
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Oct 15, 2009
I want to create a 2 dimensional array and populate it with data from database. I wrote this following code.I made some mistakes here with the arrays.
[Code]...
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Jun 10, 2011
I have the following code in my asp page:
Imports System.Data.SqlClient
Imports System.Data
Partial Class _Default
Inherits System.Web.UI.Page
[Code] .....
And while the page doesn't throw me any errors, I'm also not seeing any data in my datatable.
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Aug 23, 2010
I want to search data and then populate on a datagrid. I write the name and I click the button and it does work well, but then if I want to search for another name, I write the new name and when I click the button again the datagrid comes empty. No data at all. I will put my code'[code...]
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Nov 14, 2009
if this question has already been answered many times, but I am new to VB and I don't really understand any of the examples I have found by trying to research this topic. I am using VB 2008 Express Edition. My List View is called listView.
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May 28, 2011
What I want to do is gather the data that displays in my listview (called 'lstData') when selected and populate my textfields with it's information.[code]
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Oct 13, 2010
Currently we are using a VB script macro created in word to create some fairly simple forms based off of data entered on a data entry form. I am very new to VB, and I have been able to create many applications using forms, but I have absolutely no history creating reports. I have been reading up on the reports, and it looks like they are designed to use with data sources like tables. I merely want to take either data from the entry form, or from data derived internaly from processing the user entered data and populate a defined report "form". I have been searching, but there is so much on printing reports, that I feel overwhelmed. I am not looking for the exact answer as much as a link or place to look for a sample for what I want to do.
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Jun 29, 2010
Let's say I have an employee class with ID, Forename, Surname, Initials and Email Address properties.
At present, you can construct an Employee object by passing a data row which, typically will include all these fields. However, sometimes I only want the ID, Forename and Surname but still want to populate an object.
[Code]...
However obviously if certain fields are not present in the data row, I will have an error. Is there a quick way of populating the object based on the fields that are present within the data row without a) having to have separate subs for each circumstance and b) without having to try / catch (or something similar) around each property? I know other languages have options like this - where if there is no value, it will be another value (i.e. a default).
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Mar 4, 2010
Heres my issue, I am retrieving data from xml and populating a DataSet with the results into multiple DataTables but i have an issue where an item is repeated in my input data and it is causing it to exception because of the constraints imposed between these tables. how can i determine if a row exists prior to adding the DataRow and thus not include it in my DataTable?
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