Intercepting The 0 Key And Decimal Point Validation In A Calculator?
Feb 27, 2010
I create a calculator in visual basic and I put button from 0 to 9 ... and event click textbox1.text = textbox1 + "1" (to 9) ..it work good .. but if i press key 0 from keybord nothing is hapens ..
and the secoun problem .. if I put for example 3.25.89 not 3.2589 how can write in code a "if" for example if textbox1.text -alredy contain a point (.) 3.25 then I click again on button point .. it remain 3.25 but not 3.25.
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Dec 11, 2009
what is the code for decimal point in vb calculator?
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Sep 9, 2011
What would be the code to validate a textbox so that it can only accept positive numbers and a decimal point? If no value is entered, it automatically enters 0.
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Mar 11, 2011
Im creating an interest rate calculator that will make sure the principal is a positive amount, retrieve the interest rate from the interest rate:numericupDown function and will leave a message in the resulttextbox.This is what i have so far:
Public Class InterestCalculatorForm
' handles Calculate Button's Click event
Private Sub calculateButton_Click(ByVal sender As System.Object, _
[code].....
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Jan 6, 2010
I have this code for a decimal to binary conversion in a calculator. It is working, but when I entered numbers with decimal, the conversion didn't work.[code...]
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Mar 23, 2011
How to get the second decimal point?
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Jun 4, 2009
Im looking for the correct solution for the 4 radiobuttons for my scientifc calculator also to calculate within it.
i have something like this: but i dont think its good enough
Private Sub rbHex_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles rbHex.CheckedChanged
[Cdoe].....
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Jun 27, 2011
I have a .csv file as a source, in that one of the column contains a decimal value .
I want to validate that column wheather it has a decimal or not, If contains a decimal them it is good record.
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Nov 2, 2010
I am trying to validate wether a number is a decimal in Visual Basic. The results I get when the number is valid the msgBox shows. When it is not valid, I don't receive the msgBox and the program crashes with an error message that number has to be less than infinity.I tried adding another If Not IsNumeric(txt1.text) then -- But received the same results.
Where did i go wrong?
If IsNumeric(txt1.text) Then
msgBox("good")
[code].....
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Mar 12, 2010
I have a value that shows a integer value between 0-100. For a little math, I need to be able to add a decimal in front of the value. So if the value was 50%, I need it really to be .50%.
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Mar 5, 2009
Here is the code in C# to allow only one decimal point in a textbox:
if textbox5.text.contains(".") && e.keychar="."
{
e.handled=true
}
I have to use it in VB.NET 2003 version, but I can't use the contains property. How can I do this?
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Sep 24, 2009
I am trying to move some data from an Excell sheet to an AS/400 file.
I have my app working, in that, the data is getting to the correct table, but the problem I'm having is that one of the columns in the spreadsheet contains numbers ie; 1234.55
I need to get that to the AS/400 as 123455 in a text field.
Currently I am moving the data from one dataset to another as follows.
Dest_DS.Tables(0).Rows(i).Item(0) = Data_DS.Tables(0).Rows(i).Item(0)
I think what I need to do is seperate the whole number from the decimal and then concatenate the values. ?Not sure how to.
Also, some of the values in the spreadsheet may end in a zero such as 1234.50 but only show the 1234.5 so even fnding the decimal and then taking the next two characters won't always be correct.
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Jul 5, 2009
I was wondering how i can get as far as the second point in a Double. I have a double that will contain a number such as 12.98 but when i try to show it in a textbox it shows as 12.98000000000000000 I know this is because its double but im unsure about to to retrive only as far as the .98 and get rid of all the 00000000000000
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Mar 2, 2010
I need to amend the code below to cater for only two Decimal places. Anyone know how i can do this?
[Code]....
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Jan 17, 2012
How to add decimal point (with two decimal places) to string, without converting string to decimal? For example (Dim str1 as String), regardless str1 has value: 100 , 100.0 , 100.00, or 100.5 , 100.50..I'd like to get the output: 100.00 or 100.50, with two decimal places.
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Sep 18, 2009
validation for , allow only 2 digit after decimal point in TextBox in vb.net eg 150.25
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Jan 11, 2012
Basically in my in my aspx page I have a gridview which displays the value from my database as an image. So if a value in my database table is 5, it will be displayed as 5 images in the gridview. ie.(star.jpg star.jpg star.jpg star.jpg star.jpg)The code:
Protected Function getrating(ByVal rate As Integer)
Dim getrating As String
getrating = ""
[code].....
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May 18, 2012
Way to find out the numbers after the decimal point of the double?All i need to do is to find out if the number ends in 0 like 1.0 or 10.0 or 323.0 ?
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Aug 11, 2009
For some time I try to get the comma instead of the decimal point, but the labels I use won't display a comma. For some reason I don't understand, the msgbox() does the trick, but is useless in my application. This is my last desperate piece of code I tried but it also failed.
Expresserprijs = EuropluscolNL(ArrayCol, 2) - EuropluscolNL(ArrayCol, 1)
' All above are "Doubles" and are fed with data like 21,45 (with comma's that is)
Decimaalteken = Expresserprijs
' Decimaalteken is a string
MsgBox(Decimaalteken)
[Code] .....
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Aug 1, 2009
I'm making a sciene program so I want to draw the graphic with decimal size and location. But the parameters are always integer, not decimal or double. Can I do that?What is big but light?
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Feb 23, 2012
I am trying to think of a possible way to insert a colon and decimal point to a part of a number. I am making a Rubik's Cube timer, and I converted the times to milliseconds so I can calculate the average of 5 with that. I averaged the milliseconds, but now I need to convert that into minutes, seconds, and milliseconds. Does anyone have any idea on how I would go about this?
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Jun 17, 2011
I have a problem which is that Class Big integer Doing a miscalculation
For example: -
5 / 2 = 2.5
With Class
5 / 2 = 2
I want to do to show the numbers after the decimal point (.5)
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Aug 20, 2010
I have read about Round() and MidpointRounding.ToEven but I still could not figure how to use it to achieve what I want. I have numbers (usually from 5 digit decimal) such 125.36 , 125.10, 125.99. I want to make the 2 decimal point rounded to the nearest 20. Means, the 2 decimal point should be either .00 or .20 or 0.40 or .60 or 0.80 only.
125.36 should be 125.40 : 125.10 should be 125.00, 125.99 should be 126.00
125.54 should be 125.60 and so on
Is there math function to make or I should parse the number as text and test the last 2 digit?
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Feb 20, 2012
I got this class from another vb help forum and I'm using it for fields that accepts monetary values. Is there a way to incorporate a '1-decimal' point only rule?ATM, I can enter values like this: 1.2.2.20000..I need to limit the number of decimal points used. (1.0000)[code]
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Mar 11, 2009
I am writing an calculator application and i dont know what datatype to use. i mean should the variables be single, double, decimal...?
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Dec 15, 2010
This is my code: I need to display the decimal point correctly when the counter gets above ten pence and when it gets to a pound.
[Code]...
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Jun 28, 2009
I want to specify the user to enter only the numbers and decimal point in the text box.[code]values something like that which contain only numbers and dot.This is the code to enter the numbers only.[code]How to make the code to accept dot also?
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Jul 12, 2011
I'm drawing polygons,lines,etc. and I have to have the points of each precise - up to 12 decimals. Since a Point only takes integer values, I'm not sure how to handle scaling. I have a working user control, but rounding the decimals so I can put them into points is causing incorrect calculations (area, ect.).
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Jan 26, 2012
I am trying to restrict the the number of decimal places to two in a textbox.
I've already made it so only numbers and decimals can be added, now this is the only thing that isnt done
Private Sub MoneyTxtxbx(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles _
MoneyTxtbx.KeyPress
[Code]....
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Apr 23, 2012
Can I format it to show one decimal point? eg, 206.6. I noticed this custom toolbox item has Format.
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