VS 2008 Cube Root Error?
Feb 27, 2010
Much to my disappointment I recently discovered that VB can not calculate the cube root (or any odd root) of a negative number even though it is a real answer.For instance if you tryMsgBox((-1)^(1/3))You should get -1 because -1*-1*-1 = -1. But no, VB will return NaN, not a number.Anyways, my problem is that I'm making a graph program and the user needs to be allowed to enter any formula they want and have it evaluated so the program can graph it. But if the user enters anything with x^(1/3) or like it, it will fail.So I was wondering if anyone knows of a way around this problem, such as an extension or patch or something that will fix the issue in Visual Basic. I haven't tried VB 2010 but does anyone know if they have they fixed it yet in that version?
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Sep 23, 2011
For those of you interestested in mathematics you can find a root of a number in two different ways. Lets say you want to find the 5th root of 27.
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Apr 23, 2009
Math.Sqrt is used to find square root but if I want to find cube root or 4 or 5, how I can do?
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May 6, 2010
I am trying to learn how to read XML file and created a little program below to start testing what I have read but keep getting error "Data at the root level is invalid. Line 1, position 1"The line where the error is coming from is the line "xmldoc.LoadXml(strFile)".. any ideas?
Code:
Private Sub cmdReadXML_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles cmdReadXML.Click
Dim clsk As New clsHx
[code]....
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Aug 2, 2011
I am attempting to send my XML file through an API. I have done this no problem by using the below code, however when I try and send the FILE over it will not work, I am now getting in the browser:
Data at the root level is invalid. Line 1, position 39.
Without trying to send FILE it works:
' create the Xml that the Msxml2.serverXmlHttp object will send to the Webservice
dim Xml_to_Send
Xml_to_Send = "<?xml version=""1.0"" encoding=""utf-8"" ?>"
Xml_to_Send = Xml_to_Send & "<xmldata>"
[Code]....
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May 1, 2011
I enter a valid picture path run this code and get error in the sqrt line
CODE:
How to fix ?
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Mar 10, 2011
Attached is a file that creates a 3D cube, I did not make this but found it here at this site.Playing around with it I found out how to, on pressing of any key change the distance of the camera, thus changing the shade of the cube.So if you held a key down it got darker and darker.I want this to happen, but on a timer. So i created a timer, set the interval to 1 and did the same exact code. Set the timer to true, and nothing happens. Ever. I tried doing messagebox.show to show me a message every tick, and that didn't work either. So I went and broke the timer class?
[Code]...
Now i made a new application file, because I use timers all the time and it works. I copy pasted the code, and added the directx stuff, and it ..breaks my timer to do nothing at all ever.. Even if it is unrelated to my cube.
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Apr 29, 2009
I need to build a local .cub file for my Excel-using clients.
I have scrounged together some VB code but it fails :
ConnLocation = "LOCATION=C: est.cub;"
ConnDSN = "SOURCE_DSN=DSN=TEST;UID=test;PWD=pass;"
ConnCreateCube = _
"CREATECUBE=CREATE CUBE [TestCube] (" & _
"DIMENSION [account_code]);"
[Code]...
I have trimmed this down to the above code and am getting a mysterious OLE DB error: OLE DB or ODBC error." when I try to run it.
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Sep 8, 2009
I'm making this rubik's cube program, and I wanted to make a 3d animation of the cube doing the moves, and I figured the best option for that was using the XNA extension. However, doing that brings up a problem. I want to have lots of different options in the Mdi parent form that will interact with the moving 3d cube. The problem with this and using XNA is I can't use both the normal form and the XNA game in the same project. How would I go about having the 2 different projects interact? Just like a txt file or something?
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Jun 3, 2010
how to create a simple controllable 3d cube? I think the code should go in the form.paint area, but i dont know what exactly to put..
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Mar 20, 2009
I already have this code in my class file:
Public Class Cube
Private sngLenght, sngWidth, sngDepth As Single
Public Property Lenght() As Single
[Code].....
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Feb 9, 2009
I VB 2005 you can set the root namespace name of a project under the project properties. Where can I set this using VB2008?
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Nov 17, 2010
I'm using a ManagementObjectSearcher to query information about installed Sql Server instances, for example:
[Code]...
This method works great for InstanceID, Version and SKUName but now I'm trying to find the installation root as well. For SQL 2005 it appears the property name was SqlDataRoot, but has since been depreciated. Anybody know the correct property name to use to get the data directory, or even just install directory for Sql Server?
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Oct 8, 2009
how to close application root folder or sub root folder at the time when application is in running mode?
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Sep 8, 2011
I have short code like this :
Dim arr1 As New List(Of Integer)
For i As Integer = 1 To 100
arr1.Add(i)
[Code]....
My problem is : after RemoveAt command is value of array 2 is change this is true, but why it effect to array 1 , i don't want array 1 value change
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Mar 19, 2012
How would it be possible to add a new root to a treeview for example:
-This
---Is
---a
[code]....
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Jan 6, 2010
I'm trying to set up a .NET 3.5 web service project in Visual Studio. My goal is to include a namespace in this web service that I can expose to web applications that references this web service.I have added the namespace "MyWebservices", but I am not able to find it after referencing the web service.[code]I have also attempted to modify the "Root Namespace" property of the web service project, but I can't get that to work for me either.
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May 11, 2011
I have a website www.abc123.com. What would be the best way to determine when users attempt to access pages like[URL]..I've done some research and found that Request.PathInfo works quite well when the user visits www.abc123.com/Default.aspx/section1 but it does not work without having the Default.aspx portion included in the URL.
Right now all I get are 404 errors when attempting this with the built in IIS server in VS2k8 and on a published website. I'm using ASP.Net 3.5 and IIS 6 if those things matter.
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Jan 22, 2010
[code]...Add an attribute to a root node?
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Jul 29, 2010
Ill just show u a fake vbnet code and u make it into a real one i want ot make it have a string and go up a directory
CODE:
so the Delete url turns into C:/Main/root/log.txt orange mean that its not in the url it was removed underline is the correct url
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Dec 1, 2011
I have already managed to get friendly urls working with my cms; however, what i want to know is: with asp.net 4.0 routes options, how do i get a root leaving routing? When user types in www.mysite.com/page_name, which is aboutus, it goes to the page cms.aspx but leaves the other routes intact:
[code]...
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Jun 20, 2012
My loging page in root/Account/Login.aspx page when I click on contact us i need to redirect to root/contactus.aspx page. I used Response.Redirect("~/contactus.aspx") in Master page (Site.Master) Protected Sub lbContactUs_Click(sender As Object, e As EventArgs) Handles lbContactUs.Click
[Code]...
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Nov 15, 2009
I'm trying to copy the directories located on a root drive (J:) to another location (c:vagtilleder..)The problem is, the first folder isn't beeing copied.Example:
J:
ootfoldersubfolder1subfolder2
After the copy it should look like this at the destination:
c:vagtilleder..
ootfoldersubfolder1subfolder2
But for some reason, "rootfolder" is not created at the destination, making the destination look like this:
c:vagtilleder..subfolder1subfolder2
where the error is located? OS: Win XP Pro VB 2008 Express.
Dim copytardir As String
Dim copydestdir As String
copytardir = ("J:")
copydestdir = ("C:VagtBilleder" & StrInput)
[code]....
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Jul 24, 2011
I am trying to find the folder that my file is in so I can use it else where. I am using an openfiledialog. So, if the path of the file is "C: est est.text". I want to be able to get "c: est" without the file
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Dec 4, 2009
Well, the code I have only gives the the number IF its like 2 x 2 or 4 x 4 is in the text box (4 or 16), but if its a number that can not be multiplied together to get the value in the textbox, it has an arithmetic overflow, what can I do to make it work for all numbers?
Dim Value As Integer
Dim ValueToMultiply As Integer
ValueToMultiply = 1
[Code]....
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Feb 28, 2010
How to change root namespace of my program
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Jan 19, 2011
When I try to use the add/remove metho9ds for an x509 store on the root authority (code below) I get confirmation dialogs.Is there any way to avoid those dialogs??
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Sep 22, 2009
This is my first post on the .Net Forums - I hope I don't break any rules in the first post,I'm trying to make a VB based .Net page return a file to the user from a location external to the website.The file itself is a software setup that needs to site outside the Web Directory, basically, the page needs to pick up this file and send it to the user when the page is loaded, I've done some research into the problem and it does seem that ASP .Net will not be able to let the user download files from outside the WebDirectory (in this case, WWWROOT).
Does anyone know if this can be done? I've pasted the code I'm playying about with below - but, I wouldn't be suprised if this is completely wrong
[Code]...
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Jun 28, 2010
I need redirect to root ex: from [URL] to [URL] I try to remake from htacessl, but it does not work
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Nov 19, 2009
Does VB have any controls or functions that will trace a link to its root url? For example I have been capturing links and then following the link to get the html and scrape for the root url. Is there perhaps an easier way -- > for example with the link
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