[code]How can I validate that if 387 mod 2 <> 0 then it should display the nearest double. In this example, it should display 386 which is nearest to 387 and can be fully divide by 2.
View 3 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
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If I try to display a command line argument that has double quotes around, the double quotes are always stripped off. How can I avoid this?
for example, the argument is "c:xx.txt" and this displays c:xx.txt instead Console.WriteLine((My.Application.CommandLineArgs(4)))
I'm trying to figure out a way to validate the user data entered:
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This is in MVC3, VB.net. I'm looking for an easy way to validate a users input data into the editorfor field.
I didn't get the result I want from the following code:
Private Sub tblView_SelectionChanged(ByVal sender As System.oject, ByVal e as System.EventArgs)Handles tblView.SelectionChanged
Dim st As String = tblView.SelectedRows.ToString
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I wanted the data I selected on the datagridview row to be display in the textbox, but it displays the error message that st(0) produces "S" which is incompatible to my RackID data type.
Whenever I store values to a double-type variable, and ask to display it on the screen, there seems to always be a discrepancy, for example, I entered 7.416 to a textbox and assigned it to a double. When i ask for it to be displayed, it used to be that the 7.416 is returned to me. But just a few days ago, when I debugged my program again, it returns numbers like 7.4159987.......[code]....
View 7 RepliesI would like to know how I can make this happen?
When I double click on a row on a datagrid, a form will appear like the above screenshot.
When I double click on the row which consist of Brian/Kendall, a form will appear and should show Brian in the First Name text box and Kendall should appear in the Last Name textbox.
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 RepliesI need code that would take the input from textbox "Txtkbb" and divide it in half then round to the nearest 25 and store it in value "KbbValue"
View 4 RepliesI have written a program to return the colour of a pixel from an image. The problem I have is I need to return the colour name. Of course not all colours returned will be one of the pre-defined colours (knowncolours), so my question is, is there a way to find the nearest knowncolour which matches the colour of the pixel?
I have looked at GetNearestColour but am confused by its function. It just seems to return the same colour as the parameter passed into it.
For example, how would I get the # "220" from the number "229". Or the number "300" from "309"? The only way I've found to do this is using string stuff, but I'm afraid of the overhead for strings?
View 15 Repliesgetting a formula round off to the next highest .25.example:
2.35->2.50
2.26->2.50
2.24->2.25
2.51->2.75
I can't use the Round function because if I have 2.26 then it will round off to 2.25 which is unacceptable.I have been using the Ceiling function but it rounds it off to the nearest highest integer. Which can add an almost extra kg,lb to my formulas.
how can i always round a double up?
2.3 = 3
2.5 = 3
2.8 = 3
i always want to round up to the nearest whole number
How do I go about rounding up to the nearest (Unit 10) ie Codes Below
IfVal(TimeHalfFareTextBox.Text = $/£ 0.05)
Then roundup
to $/£ 0.10. Or it might be .....
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I use Mschart to produce charts. What I am trying to get is the nearest data point by where I click on the chart. The problem is that I can't find any connection between the HitTest values and the data point x/y values.Say, I clicked on the following point:
Dim result As HitTestResult = Chart.HitTest(e.X, e.Y)I have now values of X and Y where I clicked. How to associate it with the data point values?
What I want to achieve is to double-click on the chart which would find the nearest data point (x,y as integer) and knowing these values I would be able to recalculate other values based upon where the user needs it and double-clicks.
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i got a function that search for database data, is it possible that i make it search the nearest words or keywords? which mean if d name is TEST, n i key in TE then it will show those name wit TEST TESS TSST? [Code]
View 2 Repliesi'm building an image library and one of the things i want to do is compare the most common color in a given image to a set of established colors in rgb format the way i'll probably do this is create 3 arrays for the average r,g and b of each given image, and then compare them to my established values for r,g and b that i want to match to so if my first image has the average values of 255, 125 and 5 for r,g and b..what would be the best way to do a nearest match against my pre-established colors? (about 32 in total)
View 1 RepliesI 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?
Is there any prebuilt items to roundup a number to set fraction size or do I need to build a routine to do this? If I have to build this any thoughts on the way to go about it? I was thinking I need to strip the decimal places and then compare them to a dataset of numbers a make a choice?
View 3 RepliesDecimal number in my textbox I need to round to the nearest even number. Is there any idea how to do it?
View 21 RepliesI have a htpc project that I am working on. The main program loads dll plugins which are basically other win forms. On each of these forms, including the main program, I use a picturebox (a double buffered picturebox) for the background image and then draw everything on it by hand. Whenever I load the form from the dll and show it, I get a weird flicker. It looks like it is the previously used double buffer. Is there any way to clear the background double buffer before the flicker? Or am I going in the wrong direction?
Here's a couple of videos of the problem:
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Notice the black screen with the white lines on it or the flash of the desktop after I click "Movies." How do I get rid of that?
I'm doing an assignment for class which is basically a simple program that takes 12 monthly temperatures and averages them. But I also need to round the average to the nearest tenth. I am not particularly good at programming or math and don't know how I would fit this into my code. I am Including My program thus far. I put in bold and italic where the calculation takes place.
Private Sub btnEmterTemperature_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEmterTemperature.Click
'FOR BUTTON CLICK EVENT "ENTER TEMPERATURE"
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How can I make it so that decimal numbers round up or down to the nearest integer?
View 3 RepliesHow can i filter a DataView to a string nearest match? Almost like a FullTextSearch, is this posible using a DataView?
View 1 RepliesI'm creating a maths program and when it comes to division it's giving me .34216 as answeres which isn't what I want.I was thinking declaring the textbox the answer appears in as a single.It's not working out though and it's still using decimal points.I was told by my teacher to declare it as an integer so I tried that too, it's not working out also. I figured based on the code, I would be declaring array3() as the single or integer since that's the textbox the answer will be output into. [code]
View 2 RepliesFor greater accuracy I should use a Decimal instead of a Double ( so I've been told ). Why then have Microsoft chosen to use DOUBLE for most of the functions that return a floating point value in the Math Class?
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The window is 600x600, because the game uses a 'grid' of thirty. Each food block is 30x30, and so is each block that makes up the snake. Here is my food making sub:
View 4 RepliesI have a program that will round any numbers I give it regardless of the data type I set (I've tried double and decimal) before it saves into the DB. I'm using MS access for the DB and I've set the data types in access to Numeric Double, Numeric Decimal, and Currency and all with decimal places set to 4 -- all to no avail.
What I do know:
1) The textboxes on the form accept the number value as I enter it and after I hit save the value displayed is the same as the number that I entered. However, once I query the database again for that entry the value has been rounded up/down to the nearest integer (whole number). For example: I enter 1000.50 and hit save. I search for that same entry and the value is saved as 1000. If I enter 1000.51 and hit save then search for the entry it shows the value saved as 1001.
2) I can store the desired value directly into the DB by manually entering it. When I search for that entry from within the program it displays the correct amount. HOWEVER, if I try to change the amount and then hit save I get a concurrency violation.
I think that it may be a setting somewhere in the program that doesn't allow for decimal places but I've search everywhere and I cant find anything.
In vb.net, im using objWriter.Write("playerA= "x"")as you can see im using double quotes inside double quotes, how do i skip it so the error doesnt show up?in php you make an "" to skip the string like ("playerA = "x" ")
View 6 RepliesWhen i use VB6 i get the following outputs
961.605 * 100 = 96161
936.495 * 100 = 93650
929.295 * 100 = 92929
NOW..... When i do the above in vb.net 2005 i get the following
961.605 * 100 = 96160
936.495 * 100 = 93650
929.295 * 100 = 92930
How can i get the same output as the VB results. And i have tired it ! Type conversions, math functions, everything i can think of to get the same VB6 output !