How do I allow only a decimal point after an input of three digits in a textbox in VB.NET?
Let's say I inputed "123" after that I can only put a decimal else it wont allow any other input. So the result would be "123."
Dim KeyAscii As Integer
KeyAscii = Asc(myE.KeyChar)
Select Case KeyAscii
[Code]....
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?
validation for , allow only 2 digit after decimal point in TextBox in vb.net eg 150.25
View 3 RepliesI 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]
View 7 RepliesI am developing windows application in vb.net, i have textbox which should allow only numbers with decimal point. for example "99.00"
View 6 RepliesWhat 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.
View 1 RepliesHow can I make a textbox in which can be only typed a number like 12.00 or 1231231.00 or 123123
I've done this in a very long way and I'm looking for the best and fastest way.
Also the decimal separator must be culture specific.:
Application.CurrentCulture.NumberFormat.NumberDecimalSeparator
I found a function that validates the numberic and decimal input for a textbox and works exactly like I want. But it does not let me limit how many numbers after the decimal. how to do this in the same function?
[Code]...
Im wanting to use a textbox for the entry of Decimal figures (currency). Is there any way I can have it so if a user does not put a decimal figure (ie 15 instead of 15.00) it will put it on.
I tried a masked textbox, but that means i have to set the maximum number of digits before the decimal too which is no good.
Is there a format string to format a decimal to 000000000,00. So first 9 digits, right padded with zeros if needed; a comma as fraction separator and two fraction digits.
0 => 00000000,00
12 => 00000012,00
987456,456 => 000987456,46
So something like myDecimal.ToString("D9") together with .ToString("F2").
In the discussion in this thread: [URL] it was reveiled to me that vb.net, using double, could only calculate values up to 18 digits after decimal.... so I started thinking and came up with this class
Public Class LargeNumber
Private pNumber As String
Public Sub New()
[CODE].............
I want to split the string into a series of doubles.... and than combine them into a large number.... The size of each double component should be 18 digits on a 32 bit computer... so that I will have room to add the last carrier...
How to get the second decimal point?
View 7 RepliesI 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%.
View 4 Replieswhat is the code for decimal point in vb calculator?
View 2 RepliesI 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.
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
View 2 RepliesI am trying to mkae sure that there has been 16 numeric digits entered into the masked textbox. If not show errror message and if so to call the fucnction ValidateLuhn. When calling Validate Luhn i want the program to tell me if the number entered is valid or invalid using the code in the function:
Private Function ValidateLuhn(ByVal value As String) As Boolean
Dim CheckSum As Integer = 0
Dim DoubleFlag As Boolean = (value.Length Mod 2 = 0)
[CODE]...
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.
View 3 RepliesBasically 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].....
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 ?
View 6 RepliesFor 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] .....
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?
View 3 RepliesI 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?
View 2 RepliesI 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)
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?
For this line:
Private _allowedLocations As Point() = New () {New Point(50, 50), New Point(500, 500), New Point(700, 100)
I am getting the error "type expected for 'new ()'.
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]...
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?
View 5 RepliesI 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.
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.).
View 4 Replies