How To Plot A Double Variable Function
Mar 14, 2012I'm currently working on an assignment for university and I could really use a hand.I need to plot the equation y=0.2*sqrt(1-(0.25/x)^2)
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E.HasMorePages - Written A Function That Will Plot Long Texts Onto Printer And Should Insert A New Page Everytime
Apr 30, 2011I'm having issues with e.HasMorePages.. I've written a function that will plot long texts onto the printer and should insert a new page everytime yPos > PrintHeight
e.g.
Module Scope var i is the count
PrintPage
if i<=10
[CODE]...
I can certainly add pages from the printpage, but my function will plot characters individually onto the printer and will increase ypos at the end of the printers width.
Program Function - Says, "The Type For Variable [variable] Will Not Be Inferred Because It Is Bound To A Field
May 18, 2012Public Class Form1
Dim x, c, number(0 To 19) As Integer
Dim s As Integer
[CODE]...
The variables in the brackets [example] do not actually have brackets in them in the original code. These are where the issues are. For both variables, it says, "The type for variable [variable] will not be inferred because it is bound to a field in an enclosing scope. Either change the name of [variable], or use the fully qualified name (for example, 'Me.[variable]' or 'MyBase.[variable]')." Now, I'm not entirely sure if this is a stupid question or not, as I'm used to VB '98 because that's what we use in my programming class at High School. let me know why this won't work.
-Note: The intention of this program is to continually loop the generation of numbers for this list until I tell it to stop. Button1 ends the program, Button2 generates the list one time only, Button3 is supposed to loop the generation of the list, and Button4 is supposed to end the loop, but not the program.
C++ - What Is A Variable With & -> Double&
Sep 12, 2011So I have a class made in c++ and need to convert it into vb.net but I got problem converting a certain part of a function. [Code] What type of variable is "double&", I know a double but what's with the "&"? It isn't " double &dec_deg" so it isn't an address (pointers etc.)? and how would i convert that to vb.net?
View 5 RepliesWrite A Variable To A File That Has A Different Type Than The Function Assigned To The Variable
Sep 17, 2011I have the following code that I am using to parse out a test file. I am getting variable conversion error in Sub Main() when I assign file = Read(). The return value of Read() is a TextFieldParser type. How do I assign the proper variable type to "file" so I can write the output to a text file?
Function Read()
Using MyReader As New FileIO.TextFieldParser("C:UsersColinDesktopParse_Me.txt")
Dim currentRow As String
[Code].....
Setting A Variable To Accept The Result Of A Function By Calling The Function With Many Parameters
Feb 17, 2011I'm currently working with a client's VB.Net code, which was developed for them by a small development shop a few years ago and which they purchased and have been maintaining and uprgrading since. This client's primary developer is out on indefinite (likely permanent) medical leave and I'm now filling in until they bring in a full timer (as I'm a contractor here). My current task is to add some functionality to a the VB.Net code they purchased. I'm finding practices and techniques in the code that absolutely baffle me and can't make the code do what I want. I'm starting to wonder if it's me and was hoping to get some thoughts on the code I've encountered.
For example: Setting a variable to accept the result of a function by calling the function with many parameters, clearing the parameters in the function, setting them to some value, calling another function with those new values, then never using the values returned by the functions. I'll add a code snippet in the first comment since this is already getting long.
Clear A Variable Set To Double?
Sep 12, 2009When the clear button is clicked on my interface I need my variables that are set as doubles to clear...I tried setting them to zero but that messed up my equations and caused more problems. Is there some method in double that clears them out or sets it back to nothing.here's the coding
'button i need to clear my textboxs and variables
Private Sub btnClear_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClear.Click
[code]....
Computation Error Variable Double
Jul 2, 2011im having a simple computation problem here....
[Code]....
Dividing Integers With Double Variable
Apr 4, 2012I've came across to quite an unusual problem with dividing integers with double variable. I've created For loop where to sum-integer interval -double is added. When sum reaches certain number text is displayed as showed below:
[Code]...
Double A Number For Every Time A Variable Is Used?
Sep 18, 2011If i have a variable '12'
and a variable 'hello'
how can i double the '12' each time the variable is used?
What im trying to do is have a textbox which the user writes in a number, the number they enter then determines the amount of times a variable is written in a textbox.
so if the user were to put '3' into the textbox and click go, it would print hello12hello12hello12, how can i increase the number 12?
what i want it to do is look like this when the user presses go: hello12hello24hello36
How To Maintain Variable Value In Double DataType
Jun 22, 2012Datatable contain some values like 0.0,10000.00,54678.94. I am getting that values using for loop and store it in a variable in double datatype. I want to add these nos and store it in a variable. Each time variable value changed.
for loop
Dim ds5 As dataset1.pro_dtsumDataTable = TA5.GetData(TextBox1.Text, users)
If (ds5.Rows.Count > 0) Then
Dim y As Double
y = Double.Parse(ds5(0)("sum(fld_primary)").ToString())
Dim y1 As Double
y1 = 0 + y
End If
Next
First time y1=0.0
Next time the value of y1 is not added to previous value.
I want the result y1=64679.34
Limitation The Length Of Double Variable?
Mar 22, 2009I need to truncate to sertain amount of decimals for example : dim x as double;x= 6.98455 textbox1.text = x that mean textbox1.text= 6.98455 I need textbox1.text= 6.99
View 4 RepliesHow To Check If Variable Is String Or Double Type
Jun 16, 2009I want to see if a variable's type is string or double type. How to do it in vb.net immediate window?
View 1 RepliesHow To Take 3 Or 4 Decimal Points Of A Double Variable Without Round Off
Apr 18, 2012I have a double value like 3768.595863. if i round this value then i will get 3768.596 but i want 3768.595.how can i get that?please reply.
View 7 RepliesMake A Variable That Holds Double Qoutes
Feb 10, 2011How do I define a variable which holds double quotes. when I try to define the variable like this [code]...
View 2 RepliesPreserving NULL Values In A Double Variable?
Apr 15, 2010I'm working on a vb.net application which imports from an Excel spreadsheet.
If rdr.HasRows Then
Do While rdr.Read()
If rdr.GetValue(0).Equals(System.DBNull.Value) Then
[Code]....
But when passing the value to the SQL insert I get: "Nullable object must have a value."
Solution:
Fixed by changing the datatype of the parameter in the sub I was calling and then using Variable.HasValue to do the conditional DBNull insert.
Put Data Containing Double-quotes In String Variable?
Oct 14, 2011How to put data containing double-quotes in string variable? Aug 01, 2003 02:30 AM | LINK I need to store a string that contains words in double quotes. The complete string data is presented to the variable in double quotes, but the next double quotes within the data ends the string and the remaining text gives a syntax error. How can I place literal double-quotes in a string variable? For example:
[Code]...
Passing Double Value To Function
Sep 8, 2010I have a .aspx webform, with code behind to handle data entered by user, most fields are in double.At business layer, at other class, let say there is a function: [code]I just wondering whether this is the correct way of writing it? And if I have more than 20 fields of double value, then I should declare additional 20 double value?
View 2 RepliesAccess Single Bytes That Form A Double Variable?
Sep 20, 2009How can I get access in a fast way to the single bytes that form a double variable?
In pseudo-code I want to do something like this:
Dim myDouble as Double
Dim myArray(7) as Byte
myArray = myDouble
'continue doing things with the single bytes
The code is meant for use in a I/O-handler. The double-variables have to be sent / received via TCP. For this purpose they shall be put into / assembled from I/O-buffers.
Get Double Buffer Function Working
Dec 13, 2011I've been trying to get the double buffer function working in VB.NET GDI+ for a space invaders game using the following command.[code]But because I am using a separate draw routine attached to a class it doesn't seem to work:[code]The aliens draw correctly but the images are very stuttery and double buffering doesn't seem to work.
View 1 RepliesDouble Linked List - NodeLink Function?
Apr 29, 2011I have a question about doubly linked list the uses student names and ages and creates them into node objects. the studentItem class is already created for me I just have to create the nodes that will hold each item entered. I am required to fill in the code needed for each function givien in the ICollections library that is setup for me. I dont know where to start out I'm trying to create a NodeLink class and from the class use the information to create the guts for the add function for my Nodelink Function I have the following:
Public Class NodeLink(Of T)
Public node As T
Public NextLink As NodeLink(Of T)
Public PrevLink As NodeLink(Of T)
Public Sub New(ByVal StudentItem As T)
[Code] .....
Replace Function With Double Quotes In From Part?
Jun 14, 2010In vb.net how can i use replace function when the replace from part has double quotes in its value ?
View 1 RepliesStore Values To A Double-type Variable, And Ask To Display It On The Screen, There Seems To Always Be A Discrepancy?
Mar 16, 2010Whenever I store values to a double-type variable, and ask to display it on the screen, there seems to always be a discrepancy, for example, I entered 7.416 to a textbox and assigned it to a double. When i ask for it to be displayed, it used to be that the 7.416 is returned to me. But just a few days ago, when I debugged my program again, it returns numbers like 7.4159987.......[code]....
View 7 RepliesMake A Function Called "checkLogon" That Checks The Username/password Text To A Variable In That Function?
Oct 22, 2009I've got a basic logon form where if you enter the right password/username, it redirects you to the "MainMenu" Form How can I make a function called "checkLogon" that checks the username/password text to a variable in that function?
View 3 RepliesPublic Function GetHDDFreeSpace(ByVal Drive As String) As Double?
Jul 28, 2009ManagmentObject is not recognized!!! Help me!
Imports System.Management
Imports System.Management.Instrumentation
Public Class Form1
Public Function GetHDDFreeSpace(ByVal drive As String) As Double
If drive = "" OrElse drive Is Nothing Then
drive = "C"
End If
[Code]...
Explicit Conversion - Convert The Variable D From Double Type To Integer Type And Store The Result As 132
Oct 22, 2009I want to use explicit conversion (CType function in VB.NET) to convert the variable d from double type to integer type and store the result as 132.
Imports System.Console
Module Module1
Sub Main()
[CODE]...
This is my code. But Visual Basic tells me an error: Error1Type 'i' is not defined.C:\Users\mihaispr\Desktop\Conversie explicita\Conversie explicita\Module1.vb1922Conversie explicita
Para Imprimir Un Textbox Una Variable Double O Convertirla A String Para Poder Imprimirla?
Mar 4, 2011An error occurred creating the form. See Exception.InnerException for details. The error is: Conversion from string "" to type 'Integer' is not valid."}
[Code]...
How To Set A Variable From Within A Function
Oct 22, 2009I am trying to set the value of a global variable from within a function that I am defining as follows:
Dim X as string
Protected Function GMap1_ServerEvent(ByVal s
As
[code].....
Use The Function As The Variable?
Dec 14, 2011Is there a good reason why the function should not be used as the variable? For example:
Public Function GetTheString1()As String
GetTheString1 =
"This is a string."
End Function
versus this
[Code]...
Can't Get It To Recognize That GCD Is A Function Rather Than A Variable?
Feb 3, 2012I am trying to teach myself visual studio 2010 using VB. However, I am having trouble with functions. I have created one that looks as the example code given in the text but I keep getting an error message.I include my code but whatever I have tried, like declaring Dims all over I can't get it to recognize that GCD is a function rather than a variable.
Partial Class Intergers2
Inherits System.Web.UI.Page
Protected Sub SubmitButton_Click(sender As Object, e As System.EventArgs) Handles SubmitButton.Click[code]......