Nov 25, 2009

I'm writing a small program that will convert a negative number (e.g. -200) to a hexadecimal number (e.g. FF38). And back to a decimal number. FF38 back to -200. (I can only use two bytes when converting back and forth.)

Question: is there a function in VB that will help?

Aug 11, 2011

im using vb 2010 and currently working on a program that senses and displays values in hexadecimal, i have already done this part, but now im required to convert the value that is in the textbox, for example 006d to 109.

## How To Convert Hexadecimal To Decimal

Jun 18, 2009

I currently doing a project..Using VB2005 To convert hexadecimal to decimal. Something to do with serial port..

## Convert Numbers Between Hexadecimal And Decimal In C#?

Jun 21, 2012

Possible Duplicate: How to convert numbers between hexadecimal and decimal in C#? In C, you can do something like int x = 255; printf("x is: %d and in HEX, x is: %x", x, x); How can I do that in C# or VB.net? print the variable's hex equivalent

## VS 2008 Converting Hexadecimal To Decimal

Jul 7, 2009

This program, it reads in a file, and displays it in hexadecimal, like using a hex editor. It then goes to compare the strings and whatnot, and display certain values. During the program, there is a time where I need to display a set of offsets as decimal because that is the way that it is shown regularly.

Taking the two specific offsets and displaying them in hex ends up giving me something like "3039" or "000A", which should respectively convert to 12345 or 00010. This "ID" that I am converting, can be 00000 to 65535, which in hex is 0000 to FFFF. The current method I was given only works if the value is less than 512 or something like that.

[Code]...

Mar 1, 2010

I am currently working on a software that will convert a string to it's hexadecimal equivalent and back. I have created the following code to make the convert the string to hexadecimal, but I cannot figure out how to get it back.

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim skill As String
skill = RichTextBox1.Text
Dim skillfullbyte() As Byte

[code]....

## Append A DWORDs Decimal Value Apposed To Hexadecimal?

Jun 10, 2011

I need to write a new value to the registry. I have come stuck at the following code because what i can add is a standard key and i need to place a new decimal value to a DWORD key (aposed to a hexadecimal value)

{Dim wsh
wsh = CreateObject("WScript.shell")
wsh.regwrite("HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionpoliciesExplorerNoDrivesdword", "789")}

## Octal Binary Hexadecimal Decimal For Calculator

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].....

## DataGridView Cell Editing With Decimal/hexadecimal Formatting?

Jun 16, 2010

I have a DataGridView bound to a DataTable that has 1+16 columns defined as Integer.The default cell style is hexadecimal 2 digits (.Format="X2").When entering in cell editing I would like to provide to the user, the possibility to write the value in decimal or hexdacimal.Hexadecimal could be written like, for example, 0x00, 0X01, x02, XFF
Decimal like 0, 1, 2, 15For this reason in EditingControlShowing I add "0x" to the TextBox value

Private Sub BankGrid_EditingControlShowing(ByVal sender As Object, ByVal e As DataGridViewEditingControlShowingEventArgs)
Dim grid As DataGridView = DirectCast(sender, DataGridView)

[code]....

## Modbus Data Frame, CR+LF HExadecimal Conversion?

Oct 18, 2010

i m working on an application which communicates with PLC machine using Modbus protocol. Now i m able to generate and communicate a modbus data frame with PLC the only problem that i m facing is that in all the data frames of modbus the last ascii characters should be Carriage return + Line feed which should be read by the PLC as 0D 0A that is in Hexadecimal form. But i m not able to do this. The rest entire string is properly read by the PLC but How do I make it read the CR+LF.

## Conversion Of Time(hours - Minutes - Seconds) To Hexadecimal Value

Sep 1, 2009

I am writing a program and have run into an issue. The program requires a conversion of time (e.g. hours,minutes,seconds) to a hexadecimal value of no more than 4 bytes (e.g. FFFF). I have no idea how this is done. Can anyone point me to a tutorial or give a quick explanation. Sample code would be great as well.

## Write A Program That Displays In A Textbox A Table Of The Binary, Octal, And Hexadecimal Equivalents Of The Decimal Numbers?

Jun 13, 2011

i m trying to write a program that displays in a textbox a table of the binary, octal, and hexadecimal equivalents of the decimal numbers in range 1-222.

## Hexadecimal Calculation - Make All The Text Boxes And Label Only Except Hexadecimal Inputs,when Press Button1?

Oct 27, 2009

I have a Form with 4 Text Boxes, 1 label and one button. What I need to do is: Make all the text boxes and label only except Hexadecimal inputs.when I press Button1

Label1 = TextBox1 AND TextBox2 ^ TextBox3 MOD TextBox4

Once again every all the numbers are in Hexadecimal format.

## Convert A Hexadecimal Number To A Decimal Number

May 3, 2011

im having trouble understanding this question for a homework assignment. I need to write the PSEUDOCODE for the following scenario, but i got no idea about how to convert a hexadecimal number to a decimal number..You are required to input a two digit hexadecimal number eg. 3f (digits can be entered separately) and calculate the equivalent decimal number. (note the decimal number will be between 0 and 255) . output the decimal number

## Decimal To Hex Conversion?

Jul 9, 2009

i have 2 textbox's 1 button and im trying to convert the text in one textbox(decimal) to show a hex value in the other textbox via the button click event

## Decimal To Binary Conversion?

Mar 6, 2010

I write a program to convert Decimal numbers to Binary numbers. It is working well. But I want to control the bits. i.e - We can write 31 as a) 11111 or b) 011111. When I run my program it displays 11111. I want to take input bit from a text box and display it like 0011111 or 011111 or what ever bit I input. How can I do that ?

Private Sub DecToBin()
Dim i As Integer = txtDec.Text
Dim binary As String = Convert.ToString(i, 2)
txtBin.Text = binary
End Sub

## Conversion Decimal To Hour - Minute And Second

Apr 24, 2009

i have the decimal 0,22727272727272727272727272727273 and i like to convert it to hour, minute, second, the zero represent hour.

## Conversion To Integer, Decimal, Double

Jun 9, 2011

So, yes, I've tried with these three formats, and the problem remains the same:I have a string, "s"For Each s As String In stringarray and this array is recieving data from a streamreader that is reading a csv file. The data I'm having dificulty reading are these very specific numbers(yes, only these numbers, because phone numbers get home safe and sound).The numbers I'm talking about are usually decimal.ValueList.Add(Convert.ToDecimal(s))

Now, when I convert them like that, they always bring a "D" alongside with them. I've personally checked the string multiple times, and it just has a "1", and somehow, my list recieves "1D" as a number, same thing happens with decimal numbers(0.29D for example). I've tried with Doubles and Integers, the result is the same.

## Decimal To Binary Conversion In A Calculator

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...]

## Double To Decimal Conversion Error

Feb 11, 2009

I am writing a program that asks the user for their name and the number of pieces they completed. The employees are paid more depending on the amount of pieces they have completed(i.e. <200 = .50 per piece, 200 to 399 = .55 per piece, etc.). I have to display the amount earned when the user enters the info and hits the calculate button. I have to use Select Case.

I was thinking this would be an easy program but I keep getting an error for each Case saying "Option Strict On disallows implicit conversions from 'Double' to 'Decimal'. I don't understand why it thinks it is a double. It says I can correct this problem by adding "Cdec" before each equation(i.e.

[Code]...

## Error In Conversion From String To Decimal?

May 17, 2012

in simple application, when i am trying to convert string "\$2432.23" to decimal (i have taken reference from a book, that cDec can handle \$ and , ), it gives error InvalidCastexception

Dim amt As Decimal = CDec(txtSubtotal.Text)
i entered "\$2432.23"

## VS 2008 Conversion From String To Decimal On XP And 7?

Jan 3, 2012

VS 2008 Conversion from string to decimal problem on XP and 7

## Decimal To Binary Conversion And Display In Textbox?

Mar 7, 2010

I want to take more than one number separated by one space from txtDec textbox and display their binary form again separated by one space in txtBin textbox.

My code below ---
Private Sub DecToBin()
Dim i As Integer = txtDec.Text
Dim binary As String = Convert.ToString(i, 2).PadLeft(8, "0"c)
txtBin.Text = binary
End Sub

## VS 2008 Conversion From String To Decimal Problem On XP And 7?

Sep 18, 2009

I have a problem converting decimal number from label's string to decimal... (for example Label1.Text = "0.5"). It works fine on Vista, where I made my application, but it doesn't work on XP and 7. It converts from 0.5 to 5

VB
Dim dec1 As Decimal
dec1 = CDec(word1) * CDec(u1.Text)
'word1' is an integer. For example, if word1 is 100, on XP I get result 500.

## Conversion Using CDec From String To Type 'Decimal' Is Not Valid?

Jan 28, 2010

Please excuse the newbie question as I started learning VB last week . I wrote the following test code below to add two values entered in two textboxes and display it in another textbox. However I keep getting the exception. "Conversion from string "" to type 'Decimal' is not valid" with the code below and I cannot figure out why . I thought converting using 'CDec' resolves this issue ?

## VS 2005 Conversion From String To Type Decimal Is Not Valid?

Jun 22, 2010

I have a xml node, which can be shown in immediate window as

?Me.SelectSingleNode("./FloatAmount").InnerText
"100.00"
?typename(Me.SelectSingleNode("./FloatAmount").InnerText)
"String"

However, I want to return a decimal value.

?cdec(Me.SelectSingleNode("./FloatAmount").InnerText)
Run-time exception thrown : System.InvalidCastException - Conversion from string "100.00" to type 'Decimal' is not valid.

## Built In Base Number Conversion Functions In .Net Specifically Decimal To Hex?

Mar 20, 2012

Are there any built in base number conversion functions in .Net specifically decimal to hex?

## Cannot Implicitly Convert Type 'decimal' To 'int'. An Explicit Conversion Exists?

Mar 7, 2009

Cannot implicitly convert type 'decimal' to 'int'. An explicit conversion exists

## Cannot Implicitly Convert Type 'decimal' To 'int'. An Explicit Conversion Exists (are You Missing A Cast?)

Jul 12, 2011

I am calling a GetSerialNo function But it showing some error like:

Cannot implicitly convert type 'decimal' to 'int'. An explicit conversion exists (are you missing a cast?).

Here is the code:

CODE:

## .net - String.Format Decimal With Sign Fixed Number Of Decimal Places, No Decimal Separator?

Jun 27, 2012

What is the cleanest, most readable way to String.Format a decimal with the following criteria

a fixed number of fraction digits
no decimal separator
right aligned

## Conversion From Type 'DBNull' To Type 'Decimal' Is Not Valid When Field Has Data?

Feb 7, 2012

I am pulling data from a local MSSQL database using a stored procedure, then send the data to a web service. Every part of the component works well except for a pesky problem will a DBNull being returned from the DataRow field, when I know that the field is not null and has valid data. The database and associated INSERT statements that add to this field are designed to not allow NULL entries. When I debug break the program on or right before the line that throws the error I see that the field has valid data for the current row.If I add a null check to the code (as below) the operation continues as normal:

For Each myDataRow In dataResultsTable.Rows
If worker.CancellationPending Then

[code]....

Why is the read operation returning DBNull instead of the data in the database?

EDIT: Just to be clear, the operation does return the proper data, but the data is not being saved into the variable.

## Conversion From String "" To Type 'Decimal' Is Not Valid?

Feb 18, 2011

I get this error: Conversion from string "" to type 'Decimal' is not valid. Here is where the error is happening please help? decLarborCharge = CDec(txtLaborCharge.Text)and here is the whole function that i have it in: Function OtherCharges() AsDecimal ' This function returns the cost of labor and parts. Dim decLarborCharge AsDecimal decLarborCharge = CDec(txtLaborCharge.Text) Return decLarborCharge EndFunction

## Convert A Decimal ( Decimal Place Holder = Dot) To A Decimal (decimal Place Holder =comma)?

Dec 20, 2010

how do you convert a decimal ( decimal place holder = dot) to a decimal (decimal place holder =comma)?

## OdbcDataReader In Showing Decimal Fields Decimal Separator Disappear With DB2 Dsn?

Oct 19, 2010

OdbcDataReader in showing decimal fields Decimal separator disappear with DB2 dsn

## After Converting All Degrees-->decimal, And Decimal-->hours - Use Tan, Cos And Sin Formula

Aug 27, 2009

After converting all degrees-->decimal, and decimal-->hours, how can i use Tan, Cos and Sin formula in vb.net? I want the user must enter an input (which it is a coordinat-->i already convert the degrees-->decimal value as suggested by stanav and paul.

The questions like this (i only calculate on paper but dont know how to implement in code):

Input user need to enter:
-latitude local (e.g. 1.4875)
-longitude local (e.g. 103.3883333)

[CODE]...

## Change Decimal To A Comma When Hitting Decimal Key On Numpad Only

Jan 17, 2011

My user requests to change the . on the numpad to a  when entering text in a multiline textbox.So I was thinking about the KeyDown event.To determine if the numpad . was pressed I can do something like this [code]But now how do I change the returned charachter as a , ? All e.Key... properties are ReadOnly. The KeyPress events let me change this by providing e.KeyChar, but in that event I can't check for the numpad .

## Rounding Up Decimal Numbers To The Nearest 2 Decimal Places?

Apr 17, 2010

How would I go about rounding up decimal numbers to the nearest 2 decimal places? For example \$7.0000032 would be \$7.01 In theory, VB would make it \$7.00 but if it is > \$7.00, I want it to reflect that to the nearest penny... so \$3.0000001 would be \$3.01

## .net - Dim X As Decimal = 100.0m Do A Cast From Double To Decimal Implicitly?

Mar 30, 2011

If I have the code:Dim x as Decimal = 100.0m

Is it casting from a double to a decimal implicitly. How would I do this explicitly in vb.net?

## Form Decimal To Textbox, From Text Box To Decimal

Dec 21, 2010

1) One Decimal Varibale stores a decimal value

2) The value must be converted in string ( some time the comma is used as decimalplaceholder some time the dot)

3) the user modifies  the value

4) i need to riconvert the string back in decimal

how can i do this

so:

Variable 123.34D        ---->      textBox     123,34 or 123.34      -----> variable   123.34D

## Conversion Error On Line 5 Stating 'Conversion From String 'S' To Type 'Double' Is Not Valid

Apr 8, 2009

a user will enter a number, n, which ranges from 1 to 30. they will also enter a "P" or an "S" (sum or product). depending on which was selected, it will calculate the sum or product of the numbers from 1 to n.i'm having a conversion error on line 5 stating "Conversion from string "S" to type 'Double' is not valid." [code]