Casting - Convert A String With Value "22.882" To Double?

Aug 18, 2010

Why is it that when I convert a string with value "22.882" to double, using Dbl() it loses precision and is converted to 2288.2?

I have to use a double since I'm using the constructor of System.Web.UI.WebControls.Unit[URL]..

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Convert String To Currency Format Without Casting To Numerical Value First?

Mar 28, 2012

[cod]e...

will convert a string containing a decimal value to a nicely formatted currency value. Is there anyway to do this without first converting the string value to a decimal?

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Convert String To Double - VB?

Jul 23, 2009

Is there an efficient method in VB to check if a string can be converted to a double?I'm currently doing this by trying to convert the string to a double and then seeing if it throws an exception. But this seems to be slowing down my application.

Try
' if number then format it.
current = CDbl(x)

[code].....

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How To Convert String To Double

Aug 30, 2010

I want to convert string to double.

[Code]...

num should be 1.5432 but i get 15432 How can i get as it is in the string?

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Cannnot Convert From String To Double?

Mar 24, 2010

Iam using VB 2005 on Vista This is a sample of what I am doing:

Public Class Form 1 Dim WC As String Private Sub Button1_Click

[Code]...

How do I get around this? What I am trying to do is, I really want to use TextBox's for input to enter numbers when the program is running and I also want a MsgBox to appear if an input is not entered because these numbers are important to a final formula further down.

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Convert String Into Double Array

Aug 4, 2009

How to convert a string array into double array?

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Convert String To Double Array?

Apr 18, 2012

I need to take this string:

Dim tmpTry As String = "10, 20, 30, 40, 50, 52, 20, 20, 10, 35, 3, 8, 47, 7, 2, 5, 55, 8, 0, 0, 6, 55, 0, 2, 12, 0, 0, 21, 14, 0, 3"

And convert it to a double array:

Dim arrNumOfVisits As Double() = New Double(tmpTry) {}

How do i go about doing that?

FYI the arrNumOfVisits goes into a ParamArray System.Collections.IEnumerable()

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Datatable - Convert String To Double?

Jun 21, 2012

data table contain column named as Fld_primary. this column contain value like 0.00 it is double datatype in mysql table.i want store that datatable value in double variable. am always getting error when i convert to double datatype.

my code
-------
Dim ds5 As dataset1.DTSUMDataTable = TA5.GetData(users)
Dim dttot As Double
dttot = CType(ds5("fld_primary").ToString, Double)

Error:Conversion from string "fld_primary" to type 'Integer' is not valid.

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VS 2005 - How To Convert String To Double

Mar 3, 2010

I am trying to convert a string to double and it is giving error. Bye the way it is not giving error on my PC but it gives on some pc's where other clients are using. String is retrieved from xml data.

<data><vitals>
<username>aiglemedia</username>
<balance>49.60</balance>
</vitals></data>
vb code
Dim curBalance As Double
xmlNode = xmlDoc.GetElementsByTagName("vitals")......xmlDoc contains the above xml data
curBalance = System.Convert.ToDouble(xmlNode.Item(0).Item("balance").InnerText)... I think so error is on this line.

Below is the link for the error given by the client who is using the app [URL]

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[2008] Casting Double To Integer?

Feb 5, 2009

I'm trying to write a (WPF) program with Option Strict on, but I have a problem.
I have a Canvas with a background image, and I want to use the coordinates of where the canvas was clicked to determine what should happen next. (Something like this)

Dim p As Point = e.GetPosition(DirectCast(sender, Canvas))
Dim imgColorMap As System.Drawing.Bitmap = My.Resources.ColorMap
Dim c As System.Drawing.Color = imgColorMap.GetPixel(p.X, p.Y)

This gives me the error: "Option Strict disallows implicit conversion of 'Double' to 'Integer'" for p.X and p.Y I have tried several things, like Math.Round but strangely enough that also returns a double.

How do I cast/round these Double values to Integer, so I can use them in my GetPixel method?

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Reverse Casting - Single Back To Double?

Nov 10, 2011

I wanted to know if it's possible - after casting a double to a single, to turn it back into a double again? i tried doing something like:

Dim x_double as double = 12345678.987654321d
Dim x_single as single=x_double
x_doubble=Cdbl(x_single)

but it doesn't give me the original value.

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Reverse Casting \ Single Back To Double?

Mar 30, 2010

Reverse casting? Single back to Double

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Remove Double Quotes (convert A String Into A VC Command)?

Nov 14, 2010

User enter a command like 2+2 and instead of displaying 2+2 in the designated textbox 4 appears.

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Error "debugger Cannot Convert Data Type From String To Double"

May 7, 2012

I am using two textBox's. The first to enter the data. The second to convert to answer the program complies with no error, the debugger cannot convert data type from string to double.

[Code]....

why does the program not convert the textbox txtFahrenheit from string to double?

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Convert String That Has "+" Sign Into Double?

Aug 29, 2007

I can convert a string with no sign or with negative sign ("-" minus sign) into a double, but I cannot convert a string with positive sybmol/sign ("+" plus sign) into double. Considering the following samples:

Convert to string that has negative sign to double
Dim realnumber As Double
Sample 1. realnumber = Double.Parse("1.2345E05", NumberStyles.Any)

[Code]....

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C# - Casting String To Date

Mar 11, 2011

I am passing Date Field to SQL Database. Field is declared as String in the VB.Net Application. I wrote a piece of code for casting to Date

[Code]...

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Casting String To Nullable Integer

Jun 28, 2010

I wonder if this is not possible dim mystring as string="1" dim myint As Nullable(Of Integer) myint=0 myint=mystring It crashes on the last line why is that? mystring is already integer (1) , i dont have to cast using cint, i thought. option strict off- if this cause the problem

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String - .net Casting 2D Objects To 1 Array?

Nov 2, 2011

I am running into a simple issue for which I cannot find an effective solution.

I need to convert 2 D array of objects to 1D String.

Dim saRet(,) As Object = Nothing Dim fileLineArray() As String = Nothing
SaRet = xlrange.Value //it gets values assigned as objects
In a loop....
fileLineArray(i) = Cstr(SaRet(i,0))

I get the error, index was out of bound. ToString isnt able to convert 2d array of objects to 1 D.

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Convert A Double X To A Decimal Y?

Oct 5, 2011

Let's say I want to convert a Double x to a Decimal y. There's a lot of ways to do that:

1. var y = Convert.ToDecimal(x); // Dim y = Convert.ToDecimal(x)
2. var y = new Decimal(x); // Dim y = new Decimal(x)
3. var y = (decimal)x; // Dim y = CType(x, Decimal)
4. -- no C# equivalent -- // Dim y = CDec(x)

Functionally, all of the above do the same thing (as far as I can tell). Other than personal taste and style, is there a particular reason to choose one option over the other?

EDIT: This is the IL generated by compiling the three C# options in a Release configuration:

1. call valuetype [mscorlib]System.Decimal [mscorlib]System.Convert::ToDecimal(float64)
--> which calls System.Decimal::op_Explicit(float64)

[Code]....

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Convert SMS Number To Double?

May 3, 2012

I am trying to convert an SMS to double. I'm creating a monitoring system where values like "45.2" are sent to another modem.

I would like to convert 45.2 (which I think is string initially and placed in a textbox) to double so I can do comparison upon receiving it.[code]...

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Sql Insert Convert To Double

Oct 15, 2009

In my vb.net code, I had the following code:

[Code]...

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C# - Convert MBF Single And Double To IEEE?

Jun 4, 2010

Follow-Up available: There's a follow-up with further details, see Convert MBF to IEEE.

I've got some legacy data which is still in use, reading the binary files is not the problem, the number format is. All floating point numbers are saved in MBF format (Single and Double). I've found a topic about that on the MSDN boards but that one only deals with Single values. I'd also would like to stay away from API-Calls as far as I can.

Edit: Just in case somebody needs it, here is the VB.NET Code (it's Option Strict compliant) I ended up with (feel free to convert it to C# and edit it in):

''' <summary>Converts a MBF Single to an IEEE Single</summary>
''' <param name="src">The MBF Single value</param>
''' <returns>The converted IEEE Single value</returns>

[Code]...

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Convert Double To A Timespan (date)

Sep 23, 2009

Let just say I have an Integer like 10,000 (that's the VALUE in want to reach). So, I have another integer like 2500 (that's my current VALUE). Third I have another Integer about 350 PER HOUR. To reach 10,000 I need 7,500 (well I already have 2,500). How long must I wait to reach the 10,000 when the increase is about 350 a Hour. Okay, that's easy: 7,500 / 350 = 21,428571 Hours. BUT how can I convert this double to a timespan? Or how is it possible to add this double value to the current Date to get the Date + Time when I reach the Value?

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VS 2010 Convert Currency To Double

Apr 28, 2011

I have a value $17.50 as a string..how would i convert it to a double 17.50?

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Double If Statement - Getting Error "Conversion From String "frog1" To Type 'Double' Is Not Valid."?

Apr 12, 2011

I've been just making random programs trying to get the hang of the new language this time I was making a leap frog game where it switches back and forth beetween frogs every time a button is pressed. It also checks if the frog can land in the text box above the button pressed, if there is another frog there a message box will pop up saying sorry space is filled other wise the frog should land there.

[code]...

The error message says "Conversion from string "frog1" to type 'Double' is not valid." I understand what a double is but I've tried And If and that causes a bunch of errors.My Question is whats wrong with this cod and how can I make a double if statement???PS I did try to make an array to shorten this but thats in a different fourm will post URL later

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Convert Binary Stream Into Double Array?

Aug 5, 2009

How to convert a binary stream (which is a string of numbers) into Double Array ? (VB.NET 2008)

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Convert Double To Decimal (latitude / Longitude) In .net?

May 24, 2012

I have a piece of code:

Dim Latitude As Double = row("fltLatitude")
Dim Longitude As Double = row("fltLongitude")

Most of the lat/longs that are being fetched from the db using SP are retrieved in properly, except for a couple of records which do not include a period to indicate a lat/long value.I have tried using these:

Convert.ToDecimal(Latitude)
CDec(Latitude)
decimal.Parse(Latitude)

but none of them are working.

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Convert Generic List Of Double To Byte Array?

Sep 3, 2011

how to convert a list of int to byte array in C#, but can't get syntax to work out for me in vb.Converting a list of ints to a byte array.

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.net - String Query Error Conversion From String "iif(CurCons = 0, " To Type 'Double' Is Not Valid

Jul 4, 2011

I make a query in coding. But I got conversion error.My query is below

Dim strSelect As String = ""
strSelect = "SELECT " & _
"Description As [Desc], " & _

[code].....

Exception error is like

Conversion from string "iif(CurCons = 0, " to type 'Double' is not valid

Actually, in my report, i wanna show if it's zero then '-'. If i set it in this string.I got another error like below The provider could not determine the Decimal value. For example, the row was just created, the default for the Decimal column was not available, and the consumer had not yet set a new Decimal value.

From da.Fill
Dim cmd As New OleDbCommand(strDynamic, m_DBConn)
Dim da As New OleDbDataAdapter(cmd)
da.Fill(ds, "tblCur")

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.net - Converting A String To Double

Jun 17, 2009

i am converting a string to double?i would like to know in advanced whether it would case an error to convert a string to a double. for example if i try to convert "hello" to a double, it would give me an error. is there a way for me to know ahead of time whether converting something will cause an error?

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