I have created an array of 6 numbers which are randomly generated, I can create a graph using six randomly generated numbers, however what I want is to use the random values that are placed in the array to create my graph, I have enclosed the code that I have:
Private Sub btnGraph_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGraph.Click
txtAns.Text = ""
[Code]......
I've found some difficulty in creating a graph through the function given.For example:
Function : y = x^2 + 2
y value ranging from -10 to 10
x value ranging from -20 to 20
the graph also gridlines anf title on each axes.
are there any tutorials on DIC or other programming websites for Creating a line graph on VB.NET
View 9 RepliesI had a scanner M9090 (OS-> Windows CE), I need to show a graph based on certain results
View 6 RepliesI'm looking for some assistance on creating a line graph in VB 2008. Not sure where to start. Can some one here point me to the right direction?
View 2 RepliesI get difficult with creating graph using zedgraph. I need code for this sample graph... I need it's code so much.
View 1 RepliesI have the following array, (y axis) and wish display a curve. I am trying to find a way to code this so that can run it under Windows (PC) and under Windows mobile. The x axis increments 5 pixels with every point in my array.
Dim MyData() As Long = New Long(39) {10.0, 10.0, 10.0, 10.0, 11.0, 13.0, 16.0, 21.0, 30.0, 42.0, 54.0, 66.0, 78.0, 88.0, 92.0, 94.0, 95.0, 94.0, 93.0, 88.0, 82.0, 75.0, 66.0, 67.0, 72.0, 72.0, 67.0, 60.0, 55.0, 48.0, 41.0, 35.0, 29.0, 23.0, 18.0, 14.0, 12.0, 10.0
[code]......
How do I display the actual values at the end of the bar graph so the use can easily see the real values?
I am using Microsoft Report Viewer in VB 2008.
i am doing A-level computing and for my project i need to be able to create a graph in a VB form using data imported from a spreadsheet at a given destination. I'm struggling to find any tutorials or posts that fit
View 1 Replieshow to plot a graph using the out put values in textbox[code].....
this is my code but it doesnt seem to accept the output. It works everytime I enter number only.
I have just finished working on my database, basically it returns two values temperature and speed. i want to plot a graph of temperature against speed, with data from a database. also the data is not in order, would i need to order the data before it can be inputted into a graph.
View 19 Repliesive been struggling on this portion of my code for almost 3 days with no luck. i have a database containing a list of transactions (in this case, the product name, quantity and date of sale). I want to plot a graph for each product showing the amount sold each month for the past 12 months. The functions to calculate these values are working fine. but my problem is this:
each tab page is named after the product name:
TabControl_SaleOfProducts.TabPages.Add(
"TabPage_"
& ProductName, Item)
and then to this tab page i want to add the graph. but i cannot reference the newly created tab page?
I'd like to do something I thought was simple. All I'd like is to take the data from a connected database, then put those values into a scrolling line graph. Preferabley with 4 lines (taking information from separate tables) on the same graph. I've connected the database and set up a script to populate it with data, but that's as far as I go with graphs.
I've downloaded 'MSChart.exe', 'MSChart_VisalStudioAddOn.exe', ChartFXLiteNet' and others, yet none work. I've also followed a tutorial here on graphs, but it's for visual studio 2005, and I don't have the options required. I'm using Visual Studio 2008 with VB.NET.
I have used MSChart control and created line graph. when i move my mouse over the graph, i want to display X-axis value and Y-axis value in another label above the graph.
View 2 Repliesplease tell me what is below code doing? is it creating array with two values or its creating to string index which will take value later? [code]
View 4 RepliesI have built an Access 2007 database with some data stored in it. I have managed to export data using VB2008 from that database to Excel 2007 and have it automatically draw charts based on this data and a query in the Visual Basic Code. One of the results looks like this:
View 3 RepliesHow can i use zed graph web to graph a dataset or datatable, the only examples i have found use test data.
View 2 RepliesWINDOWS PLATFORM: WINDOWS 7APPLICATION LANGUAGE: VISUAL BASIC 2010 EXPRESSWINDOWS FORMS DESIGN.CONTROLS: CHECKBOXES, RADIO BUTTONSDear VB Programmers,The function of the checkbox is to: check whether the application will display a particular page @ start up or not.
View 2 Repliesi want to declare an array with a name that is the value of a variable. I need to do this because i want to create arrays from a text file that i'm reading.Basically, if someone could make this work then i should be able to change it to fit my use.
Dim var1 As String = howdy
Dim var1() as Integer
In this case i'd like to be declaring an array with the name 'howdy' that stores integers. In reality i'm looping a bunch of read names and would like to create an array for each name i read- but i'm quite capable of sorting the rest.
is there any way of creating a file in visual basic using a variable as the file name? I have tried using the following but keep getting an error "The given path's format is not supported." ??? I am trying to create a log file of machine use every shift (8 hours) and just want to use the same name for the file with the date and time appended to the end of the file name. the section of code giving me the error is below.
[Code]....
I want to create a variable that will hold bunch of stuff.
I will be using over 50 IF statements (it's a complicated number game) and the IF statements will be something like this.
If something = 1 then
' do this
' then do that
[Code]....
Why I cannot get a variable to come in. I keep on getting the error "Expression does not produce a value" for one of my Dims.
Imports System.IO
Public Class Main
Dim image_1 As Integer = Openimg1.FileName
'The line below is the one causing my problem
Dim image_2 As Integer = My.Computer.FileSystem.RenameFile(Openimg1.FileName, "_hid" + System.IO.Path.GetExtension(Openimg1.FileName))
[Code] .....
So basically, how can I create a variable from something that has yet to be created?
how do I DIM a variable's name using previously declared string varialbes? I have been using PERL for processing data stored in text files but I now have a business need to use VB2008. I would like to do something like this:
dim name1 as string = "ABCD"
dim name2 as string = "123"
'here is the part that I don't know how to do - create a 3rd variable name concatenated from name1 and name2:
dim string.concat({name1,name2}), or maybe use a counter in a line like 'dim namex as string' with x being a counter value.
Essentially I want to dim variables using text strings extracted from a file. In PERL I have declared literals and arrays, such as 'my @$name1', which creates an array named with the contents of $name1. In VB2008 I am not sure how to make this work with the DIM statement.
I have got a bit of code which creates an error when you start debugging. the code is:
Dim Gravitee As Decimal = TrackBar1.Value / 100
This code is a declaration (outside of a sub) so that it can be used in any subs I choose. I don't know why this causes an error?
Is it possible to create a variable that is global for each session in ASP.NET? Usually I do this with Session:
Session("my_variable") = 10
But this necessitates casting it every time I want to use it like so:
Dim my_variable as String = CInt(Session("my_variable"))
[code]......
I'm trying to elaberate on some basic examples of .Net programming in using VB. The basic example of creating a new instance of Form1 is:
Dim x as New Form1
x.Show
I've added some OptionButtons to set the StartPosition of the Next Instance of Form1 as well as some Labels that display the Top, Left, Width and Height properties when the new instance of Form1 is Shown.
This is the code I'm using.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim x As New Form1
If Me.RadioButton1.Checked = True Then
x.Top = 0
x.Left = 0
[Code] ......
I need to store elements in a multidimensional array. Specifically, I need to save "tiles" to a grid (e.g.Grass at x:2 y:5, Dirt at x:3 y:5, etc.). Using a multidimensional feels very hacked up and is very glitchy (having to resize my arrays and having to create new ones were they are non-existant). Is there some kind of element made for this? Something I can say obj.getPos(2,5) and get my Grass Element and use obj.setPos(DirtObj, 3, 5) to set it to my Dirt Element?
I'm just wondering if there is something easier to use than multidimensional arrays in vb.net, that is all.
I would I have a program that I use in the computer in my network, but for every user I need to edit the source to this user, thus the user cannot edit his information, just use the program how it was ... So, looking over the internet I found a "program" that may contains my solution... Its a Keylloger, I'm not meaning use this keylogger, no, but it has a a very interest feature: I use the main form to edit the information then after all it create a new program with the new information inside... I use my main program to create every userprofile then my program create a new program with the profile inside...
View 12 RepliesOk I'm creating a sql query with a string variable and executing it in vb. The string would look something like: Insert Into Table (vara,varb,varc) Values ('vara','varb','varc') This works fine.
[Code]...
Since it's been a while since I have done anything in VB and I wasn't that accomplished anyway, I thought I would VB.net (VB 2008 Express) and fiddle around with it. I am in the process of making a calculator, which so far only adds...the other functions will come. The adding is where I am having difficulty. Here is what I've got:[code...]
I am not adding the right things...I know, but I am running out of ideas...too tired, but can't stop now. Just too close to have one function of the calculator working.