When running the following, the code wants to return a value of 5 dollars, 3 quarters, 0 dimes, 1 nickle and 3 pennies when change due is 4.78.
'calculate amount of dollars, quarters, dimes, nickles, and pennies.
Double.TryParse(txtDollars.Text, dblDollars)
Double.TryParse(txtQuarters.Text, dblQuarters)
Double.TryParse(txtDimes.Text, dblDimes)
[Code].....
I have a group of 25 labels named Label1, Label2, Label3, ... Label25 in a square of 5 per row, 5 per column and I wanted to assign the backcolor to all of them on a loop and assign a value of "True" or "False" to a matrix of 25 boolean values representing them.
But I was getting errors on the pattern created.
My approach was to use a substring containing a number copied from the label names:
Num = Val(sender.name.substring(5))
And the subindexes of the matrix:
p = (Num - 1) / 5
q = (Num - 1) Mod 5
The values for the lower corner of the matrix were rouded to 5 instead of being 4. Instead of (4,0) ,(4,1), (4,2), (4,3) (4,4) I was getting (5,0),(5,1)...(5,5)
So I solved the problem by creating two single variables "A" and "B", doing the divission and MOD operations on them, finding the floor of them and then converting to integer:
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles _
Label1.Click, Label2.Click, Label3.Click, Label4.Click, Label5.Click, _
[Code]......
When trying to divide the following, I get an overflow error:SAA_EM_DM(i, 1) = SAA(i, 1) / SAA_EQ_FI(i, 1)
All arrays are defined as Double
What is the rounding method that VB.NET uses when a double is used in a for statement like this. It looks like 5.5 is rounded to 6 and 10.5 is rounded to 10. The output of the program is 6 7 8 9 10
Sub Main()
Dim A As Double
Dim B As Double
[code]....
Private Sub calc2_Click()
Dim t As Long
Dim V As Long
Dim w As Long
[code]....
integer 51 is the result of Math.Round(mX ) where mX = 50.8026755852843how do I ensure that an integer value is created but doesn't round up but rather rounds down.the application is a location coordinate system begin displayed and if the mouse pointer hovers over a point just slightly to the right of the vertical x grid line as determined by a MouseEventArg, I want the resultant integer value to be 50 if the Mouse
View 5 RepliesI'm trying to round a double to the nearest 5th or 10th number. So far my code looks like this basically:
'Mathamatical equation For Cost to Mow
dbCost = (txtArea.Text / dubMetres) + intExclusions * 3 + (intIrregular / 2)
Dim dbRounded As Double
'Trying to round to nearest 5 or 10
[code]....
I'm quite a newbie in VB.NET (and VB on the whole). So my question could sound rather odd, but still. I've stumbled upon an issue with the CInt and converting a double to an integer.
The issue is the following: CInt(10.5) would be 10
CInt(10.51) would be 11, but I expected 10... (Got used to C# style conversion: (int)10.51 would be 10)
As pointed out here Integer.Parse VS. CInt the result is just rounded in some fashion. Nowever, all I need is to get only integer part and throw away the fractional one. How can I achieve such type of conversion in VB.NET? After a short research I assume that I can use Fix() funciton to do the trick, but is it the best choice ever?
How to i roundup a double number to 6 decimal places in vb.net?
View 1 RepliesI've created an httplistener and I'm using the async method it has.Starts like this on a BUTTON click in my test app
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim prefixes() As String = {"http://*:8080/HttpListener/"}
StartRequests(prefixes)
End Sub
[code]....
This forces the callback to fire - for some reason that I don't quite understand and it gets this error...
Quote:
The I/O operation has been aborted because of either a thread exit or an application request at this line
Private Sub GetContextCallBack(ByVal result As IAsyncResult)
'Dim listener As HttpListener = CType(result.AsyncState, HttpListener)
Dim context As HttpListenerContext = m_listener.EndGetContext(result)
How do I stop the WMP control from opening the video fullscreen upon double clicking on the video?
View 1 RepliesI am using the following code to create an array consisting of double values specified by start stop and step. The problem with that is that for some weird reason there is a calculation error that seems to originate from the for statement causing the values to drift after the 11th to 12th digit after the comma which is quite irritating for the purpose i am using it.
[Code]...
I'm trying to convert code from Delphi to .Net. I'm stuck on one line:
//Delphi code ss := Copy(ss, Length(ss), 1) + Copy(ss, 1,Length(ss) - 1); 'vb.net code ss = ss.Substring(0, ss.Length - 1) + ss.Substring(1, ss.Length - 1)
Delphi combines the two substrings, while .Net just concatenate them like a copy.
I have a situation where I am handling both single & double mouse click events on a form. In both cases something has to be loaded, however when a double click occurs, I do not wish to execute the code attached to the single click event.Is there a way to intercept the mouse click's and check if double or single and then execute the right event appropriately?
View 2 RepliesWhat's the difference between / and for division in vb.net? My code gives very different answers depending on which I use. I've seen both before, but never knew the difference.
View 3 RepliesI am using oledbconnection object with access database engine 64 bit to get data from Excel file. While using sqlconnection object if sql string has these statements "SET ARITHABORT OFF;SET ANSI_WARNINGS OFF;" , then division by zero exception doesn't cause any problem. But while using oledbconnection these statements cause error. My code samples are below:
Dim PbpConn As OleDbConnection = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;" & _
"Data Source=C:BuzBeatDataPBPData.xls" & ";" & _
[Code]....
When SUM(pbA) has value "0" then it causes error and can't get data. is there a way to close the warnings and division by zero exceptions?
i face a problem while i practice the question in my text book, it require us to key in 4 digit of number and split it into 4 digit and encrypt it. Below is my coding [code] Console.WriteLine("The encrypted number is: " & encrypNumber3 & encrypNumber2 & encrypNumber1 & encrypNumber4)But its got error after i key in the 4 number.
View 2 RepliesI've got a problem approximating the result of a division that should give a sharp result:
I use this code:
pListPrice *= 100 / (100 + VATPercentage)
where VATPercentage = 20D is declared as Decimal type. pListPrice = 25.2D is declared Decimal too.
The result should be: 21.00 sharp!
Instead I get 20.99999999999999999999D
Deviding an int by zero, will throw an exception, but a float won't - at least in Java. Why a float have an additional NaN info, while int haven't?
View 6 Repliesi have got a value in time span lets say: tsp1= 2 hour 5 minuts i have a another time span variable which contains value like: tsp2= 0 hours , 2 minuts?how can i divide tsp1 by tsp2 so than i can get exact number of times tsp2 divied the tsp1 and how much value is remaining.i am using vs2008?
View 3 RepliesIn the following linq query I have a division by zero exception wich I can't seem to code around. It occurs when the Sum of fldDevider returns 0.[code]...
How can I Make sure the ValuePerMonth field is 0 when the Group.Sum(Function(dr) CDec(dr.Field(Of String)(fldDevider))) function returns a 0. Or how do I return a 1 for Sum fldDevider if it is actually 0.
I have hit a block and not sure the best way to go with this. Looking for resources to find more on the subject
View 1 RepliesThis exercise says :"Write a program that inputs one number consisting of five digits from the user, separates the number into its individual digits and prints the digits separated from one another by three spaces each. For example, if the user types the number 42339, the program should print
4 2 3 3 9 Use the command window for input and output. [Hint: This exercise is possible with the techniques discussed in this chapter. You will need to use both division and modulous operations go "pick off" each digit.]"
Here is what I have learned in Chapter 3:
�If/Then Statements
�Console.Write()
�Console.WriteLine()
[Code]....
This exercise I have yet to start, and don't think I will be able to do much, because I have no clue how to "Pick off" the numbers using division and modulous operators. I know what the mod operator does, but I do not know how to use it and division to do what this exercise is asking me to do.
How do you check if the division of two integers is a whole number, just answer with code, no links?
View 6 Repliesi'm just a begginer in using visual basic. i'm trying to add, subtract, multiply and divide two numbers. here is my code;[code]an error is occuring when i'm not putting any number on the textbox. now for the problem when i put a number to textbox1, and 0 to textbox2, there is also an error. It's because we can't divide a number to zero.
View 12 RepliesI am trying to load a small decimal number (eg 0.0566897 from a dataset field in to a variable (double), divide it by 2 and place it back in the dataset. After the divison, the variable is 0.0 and the rest of the decimal places are gone. How can I avoid losing the decimal places?
Dim dblCostps As Double = "0.0000000"
dblCostps = todds.Tables("todinfo").Rows(1).Item("cost_per_second")
dblCostps = dblCostps \ 2
todds.Tables("todinfo").Rows(1).Item("cost_per_second") = dblCostps
I've inherited a Visual Studio/VB.Net numerical simulation project that has a likely inefficient calculation. Profiling indicates that the function is called a lot (1 million times plus) and spends about 50% of the overall calculation within this function. Here is the problematic portion
Result = (A * (E ^ C)) / (D ^ C * B) (where A-C are local double variables and D & E global double variables)
Result is then compared to a threshold which might have additional improvements as well, but I'll leave them another day
i have a division of 2 integer that give me a result as2,3944534 ...how i can give e result as
View 3 RepliesSimple Calculator multiplication and division Trying to make a simple calculator. My program inputs numbers and arithmetic operations thru commandbuttons. The numbers, num(n-+1), are odd and the operations, op(n), are even. The code is based on the even op string. Every time a op occurs it is stored in numop(n) to be accessed later. I have all the other operations in sequential order: "*"," "/, "+" and "-". The other similar For-Next loop are the same just interchange the two * for /, +and -. The "+" and "-" work fine in this configuration.
My problem is the multiplication and division does not occur. The numbers and operations line up. The numop(m)=g*h should yield numop(m)=num(1)*num(3). Is there some sort of code to be inserted to accomplish these multiplication and division operations?
[Code]...
I have a text box filled with lines of names. What I would like to do is divide the text box into 3 different data grids using two different methods (one button for each)Method one: divide the test box by line number into 3 different data grids e.g. lines 1, 4, 7, & 10 go to datagrid1, lines 2, 5, 8 & 11 go to datagrid2 & lines 3, 6, 9 & 12 go to datagrid3.Method two: divides the group into 3 groups based on top 33% go to datagrid1, middle 33% go to datagrid2 and the the remaining 34% (bottom) go to datagrid3.The number of lines in the text box should never exceed 50 but best left not limited just in case.
View 6 Replies