VS 2010 Get Double Fractional Part Length
Nov 20, 2011
I am creating a math related class and one of the problems I have been having was how to create a function to return the fractional part of a double as an integer. I could easily do that if there was a way I could get the length of the digits.
-3.141 should return 3
-0.125 should return 3
-0.5 should return 1
-0.4545 should return 4
I would like to do this without using string manipulation. So far all I have gotten on the web is unanswered questions. I thought of using log, but it doesn't give the desired result when working with numbers < 0
View 3 Replies
ADVERTISEMENT
Jun 24, 2011
Is there a way to get the fraction parts of a Double without using string manipulations? Specifically in vb.net?
There are numerous examples for a decimal in various languages. One for vb.net is this one
Basically they all seem to use either a mod or Truncate method or they take advantage of casting to integer behavior. But none of those approaches will work for a double/float type due to the inherent inaccuracy of the double/float type. There is also the problem that doubles don't cast to decimals reliably. Below is a test case to show what I mean and expect.
<TestClass> _
Public Class BasicNumberTests
Function DecimalFractionalPart(ByVal number As Decimal) As Decimal
[Code]....
View 2 Replies
Feb 28, 2009
Simple requirement to split a double value inputted into a string to decimal and fractional.I enter 12.1 and it splits it into
12 and then 0.0999999999999996
Where is my 0.0000000000000004 gone??? Did the cpu tax it?I have tried a few other tricks to split the number and i get the same result...The fractional results of each attempt
12.0 0 Amazing!!!!
12.1 0.0999999999999996
12.2 0.199999999999999
[code]....
View 6 Replies
Sep 6, 2011
I'm new to this board and I was wondering if you guys could help me out. I have a problem that needs to be resolved before 9:30PM tonight.
I'm a bit of a sloppy coder so work with me. Here's the code that's giving me problems:
[Code]...
I have 6 text boxes, 5 of which accept input. When they're focused on they become blank for a number to be typed in and upon losing focus, they add the labels etc. on their own.
View 3 Replies
Mar 22, 2009
I 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 Replies
Jul 19, 2011
I am using this expression to validate e-mail addresses:
"^[_a-z0-9-]+(.[a-z0-9-]+)@[a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,4})$"
I noticed that in order for the e-mail address to validate, I need to put in at least 3 characters before the @ symbol. Is this a requirement? What if I just want to have an e-mail address with 1 or 2 characters before the @ symbol?
View 3 Replies
Jun 14, 2010
In vb.net how can i use replace function when the replace from part has double quotes in its value ?
View 1 Replies
Aug 29, 2011
Anyone know how I can return 3.0790 given the two dates below using VB.NET 4?The code below returns a whole number 3... Dim datTim1 AsDate = #1/31/2005# Dim datTim2 AsDate = #2/29/2008# Dim YEARS AsDouble = DateDiff(DateInterval.Year, datTim1, datTim2) MessageBox.Show("Years: " & YEARS)
View 8 Replies
Mar 13, 2009
I have a web app that sets a var setT to DateTime.Now. This var is used to set a "lastUpdate" field in a database and Cache("ltu"). This value is also added to a cookie. the problem I'm having is that comparing the cookie value and the cahed value show that the cookie value is earlier than the cached value, eventhough it is the same value that cam from the setT var.I'm assuming that the fractional seconds are being set to 0000's in the cookie by some means which is the only explaination I can come up with.Now, Is there some way I can set the origianal setT DateTime.now value to not have fractional seconds, or zero fractional seconds?Do you think I'm going about this correctly?
View 1 Replies
Apr 17, 2009
this is not working?
[Code]...
End WhileI am trying to read from the ": " to the end of the line. I keep getting this error: Index and length must refer to a location within the string. Parameter name: length
View 3 Replies
Feb 17, 2011
am getting the above exception while swaping Items in the list(lstRoutePriority).PFB my code
if (lstRoutePriority.SelectedIndex > 0)
{
//Swap the two items
[Code].....
View 2 Replies
May 31, 2010
I have an array in my application and I don't know how many values there will be in the array because it gets the data from a webpage. Filling the array with information from the webpage works except for the length, it always returns 999. This is my
dim Array() as string
Array = GBA(source, "<b>", "</b>")
Count = Ubound(Array)
How can I find out the length of my array?
View 8 Replies
Jul 17, 2011
I have an API that loads into memory from a button click. It can then either load an approx 10MB txt file (ASCII comma delimited characters/decimal list as a string) or live timed data from the internet. The idea is to be able to view the data in a text box. From there I can see what I am doing as far as spitting that info into a datagridview or database. The data is completely out of order in the txt file but has various Getinfo Functions / DLL's accessed via button clicks that split the data into its correct format to display in the text box. The problem I am having is not having fixed length strings in VB 2010. I don't know enough to work out if there is a simple work around or something more complicated required. Everything I have tried has left the textbox empty.
VB 2005 code that works:
Option Strict Off - I want to solve with this ON
Option Explicit On - I want to solve with this ON
Imports VB = Microsoft.VisualBasic
Private Sub Command3_Click(ByVal eventSender As System.Object, ByVal eventArgs As
[Code] ....
View 13 Replies
May 3, 2010
I am pretty sure that my questions will soon get so annoying you won't answer them, but before it happens.I am using DrawCurve (with density set to default) to draw on my picturebox. I need to know the exact length (well, not *exact* but knowing it is around +/- 1px from exact length would be nice) of the curve drawn.
Is there any function in API I could use to get what I want? If not, could you point me to the algorithm (preferably implemented in any language) that I could use with array of points as an input and length as an output value?
View 13 Replies
Feb 3, 2012
I have a title (in one line) that can have different lengths. I need to print this title on A4 landscape - page ( draw string in print page event), but always it should be located in the middle of the page, regardless of length. If I want to determine the exact location I have to calculate the length of the string in pixels. Or maybe there is a better way to center the string on page? How can I do it?
View 2 Replies
Mar 14, 2011
This is related to my last question.Even though Access considers Nulls and zero-length strings (ZLS) separate values, often developers wish to treat them as equivalent for the sake of an If...Then statement or some other stretch of code. One way to accomplish this is to write code like this:
' Not so efficient
If IsNull(varAge) or varAge = "" Then
' do something
[code].....
View 4 Replies
Feb 22, 2011
im making an application in vb.net (duh!) anyway i have created and coded the whole project and it performs exactly as i want it to (i dont need code help). my problem lies with the fact that my project is 2-3 parts
1.a setup form that gathers inital data about the enviroment stores this data encrypted in a config file. after inital setup this form is not displayed again. but needs to be run on both computers
2. the second form is the real application form im in the process of turning this part in to a background service anyway this form is the one that establishes the connection between two nodes it works correctly
3. the config files
anyway here is my problem i want to make this application distributional with just one file the (.exe) and have this .exe make everything else happen. it runs the setup form and creates the first config file which it does then it needs to produce a copy of just the second form and the config file to transfer to workstation #2 that will run independtly without the whole application which i cant make happen then it needs to turn both workstations application on by only starting one on either computer and invoke the other computer to start its corrosponding app also no idea how to make this happen any ideas or suggestions as to where to look to try to find my answers.im thinking i might need to make two seperate applications (a setup app, and the running app) and include them both in a project and use the setup.exe to to package them together this is a little side project that im making for my self to use to make programming a little easier so i plan on giving it out to some fellow students to test and tell me what they think so im not really worried about ease of use or complicated procedures yet but if it turns out to work and actually be of use to anyone else i would be willing to rewrite it to distribute to the masses but for now i just want it to work for me.
View 4 Replies
Dec 10, 2010
Public Class Form1
Private Sub but_convert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles but_convert.Click
Dim input_string As String
Dim output_string As String
Dim fkey_string As String
[Code] .....
So, the big thing is that I want to use that code to transform this:
if(strcmp(cmd, "/quitjob", true) == 0) {
if(IsPlayerConnected(playerid)) {
if(GetPVarInt(playerid,"job") > 0) {
[Code] .....
The problem is that I get an empty text box when I click the button.
View 7 Replies
Apr 24, 2012
i would need to extract a part of a website like this
<span id="wood" title="4800" class="res">85206</span>
I want to get the value "85206".
View 6 Replies
Jan 6, 2010
I have a field displaying on a datagrid that the user has asked to be variable length based on the data that is returned. Is there an easy way to determine how many characters are returned for a field and then converting that to a pixel length so that I can change the length of the field in the code.
View 2 Replies
May 2, 2012
i am trying to import a fixed length text file into an access database (accdb). I already have the table created but it doesn't have to be that way. i am wondering if i know the field lengths, can i a use a SELECT INTO query to get the data into access. or do i need a schema file?
View 1 Replies
Aug 15, 2011
I have a problem with snake game. I never tried to make a game with VB, but now i tried to make snake from this tutorial:So i added food to this snake game, and when i taking food, it increases score, but length cannot be increased and i don't know why. This code is in timer to check if snake head is on the food:
If p(m).X = food.Location.X And p(m).Y = food.Location.Y Then
score += 25
food.Visible = False
[code]....
View 9 Replies
Jun 11, 2011
[Code]...
By my logic, this should only assign .length to index IF the length of strItem is longer than 0. This check is there in case the listbox is empty, or the user has not selected an item. However, everytime I go through this code without an item selected I get:
[Code]...
View 4 Replies
Dec 26, 2011
I am wanting to create 2 tables called Stores and Locations. Locations is a table containing a unique location_code and a location. Stores is a table containing a unique store_code a store name and a variable number of location_code's and a relationship is set up between the 2 tables.
creating the Stores table in particular the location_ code. Can rows in a table have differing numbers of columns? as a particular store type could be in many diferent locations. I feel it should be possible to set up some sort of array of Location_code's in the Stores table.
View 2 Replies
Jun 5, 2010
I need pick some part of the picture (or can said crop some part picture) but I want to pick it through my mouse.. so I selected that picture coordinate..
View 5 Replies
Jan 6, 2011
Dim MainHwnd As IntPtr = FindWindow(Nothing, "NameOFtheSoftware - Trial Version (0 days)")
'MenuClick(MainHwnd, CType(2, IntPtr), CType(0, IntPtr))
I am using the name of the window to do the clickingaction, But the software is a trialversion and changes the days amount. So how to make it that it doesnt need to find the whole windowname, but just a part of it.For Example: NameOFtheSoftware
View 15 Replies
Oct 9, 2010
I have a file location as a string. How can i remove the path from the string and just use the file name? For example:c:filesfile.zip - is the stringhow can i just make it so it's file.zip?keep in mind that the location is found by using anpenfiledialog(), so it needs to be able to remove the location wherever the file is.
View 6 Replies
Oct 24, 2010
I've got an unusual request. I have an image that will always have bounds that are of Base 2 (2, 4, 8, 16, 32, 64,...) in both dimensions. I need to know if there's a way that I can get a small 16 x 16 square (or smaller, still of base 2) portion of the image. I'm planning on overlaying a grid on this image that way the user can select a portion of it and then the program creates a dynamic image from the selected grid square to use. Is this possible to do? I did a quick search on the Image class and didn't see anything that stood out. Note: This is for framework 2.0, but not picky about jumping to 4.0 if necessary.
View 8 Replies
Feb 6, 2012
I need to seperate a name into 2 parts using split the first part being 2 letters "That was easy" but the last part of the name would have an unknown lenght. so how do I get the unknown length? I believe I understand the Join Part here is what I have but it only works when you know the lenght of the name
Project Notes
'Form has two textboxes and one button
'first text box holds a first and last name
' 1-seperate the first and last name into 2 variables
[code]....
View 7 Replies
Nov 27, 2011
Is there a problem with changing the column length in table and using comboboxes that display a partial list of the records from that table.I had a column(Name) that was 18 chars long. I would then display only a subset of those names in a combobox by not listing records where a column called privileges was set to X. This and other uses of combobox worked fine till I increased the column length to 24. The combobox no longer filters on the privileges field though when I select the column priviliges after my selection it will display the value X.
View 1 Replies
