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]....
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?
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.
View 2 RepliesI 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.
View 2 RepliesI 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.
I'm just wondering how to convert a string from a textbox into hexadecimal. I looked all over the internet and only found ways in c#. Does vb.net have the ability to do such a thing? If it can then I'd like to know how to convert string to hex and hex to string.
View 4 RepliesI have a database that is giving me mac addresses as strings. What I need to do is to convert this string to a decimal value, increase it by 1 and convert it back to it's hexadecimal value. I'm familiar with c# but I have to do this in vbscript.
View 3 RepliesSo the server I am running has a database of players equipment, I am trying to write a program to see if they are hacking by comparing the item requirement with the stats the player has, to do this I need to convert the varbinary(512) column from the SQL Database too a Hexadecimal string, then from that string remove certain parts of it.
Example:This is the hexadecimal code for an item:
0x440047000028000000000000896B4685
the part I need is "4400" numbers (Position 3,4,5,6 from start) I then need to flip these backwards so it reads "0044". I then will compare this itemIDX with a list of items I have set aside that people mainly use this hack for.
So the main things I need help with, are converting varbinary(512) to hexadecimal and then making my program bring a list of accountID's up who are using the hack, here is how the databases are set out:
Account:
Contains account data ONLY
Game:
Contains the Character and Equipment DB
i need to compare the equipmentDB, then return the CharacterID from the equipmentID, compare that ID with the CharacterID in CharacterDB, then extract the accountID then return the account name from the accountDB I don't know how the binary is split up from item too item, although I would imagine, it isn't, i would have thought it just goes onto the next item when the item ends.Although, all the items start with hex string "0x" so this may be the separator!
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]
View 2 RepliesI have a string of characters, but I would like to have a string of hexdecimal characters where the hexadecimal characters are converted by turning the original characters into integers and then those integers into hexadecimal characters. How do I do that?
View 3 RepliesI'm trying to code a program but this error repeatedly shows up and I can't for the life of me figure it out EValue of type 'String' cannot be converted to 'System.Windows.Forms.TextBox'. It appears in relation to this code
[Code]...
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")
How can I Convert a Unicode value to its equivalent string for example i have "రమెశ్" and i need a function that accepts this unicode value and returns a string I was looking at the System.Text.Encoding.Convert() function but that does not take in a Unicode value, it takes 2 encodings and a byte array. I bascially have a byte array that I need to save in a string field and then come back later and convert the string first back to a byte array. So i use ByteConverter.GetString(byteArray) to save the byte array to a string but can't get it back to a byte array.
View 4 RepliesI need to convert this string to the proper form in my vb,net code
if (c == '"') {
s.Append('"');
} else if (c == '\') {
s.Append('\');
} else if (c == '/') {
[Code]...
I'm reading Lat + Lng coordinates form my database. I need to convert them to double. This is what happens:
Dim strLat As Double = CDbl(reader.Item("lat").ToString) MsgBox(strLat.ToString) ' << result: 5237861 should be: 52.37861. The point is removed.
i have a program that you enter a code and your selection goes ito a richtextbox and is then added up in another as you select more items, i have run into a problem it worked a few days ago but now will not.
Dim dectotal As Decimal
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]....
I get an InvalidCastException was unhandled on converting the .value to .text but I can't figure out how to convert it. Tried a few different ways but nothing seems to work. load a file from disk and have that be assigned to the trackbar.value?
Dim FileName = (App_Path() & "SettingsPingTimeout.txt")
If File.Exists(FileName) Then
lblPingTimeout.Text = "Ping Timeout: " &
[Code]....
I want to convert the string value "13.3939" into a Double yet when I tried Convert.ToDouble("13.3939"), Double.Parse("13.3939") and CDbl("13.3939") they all returned 133939.0. Does anyone know how to do this properly?
View 1 RepliesI am trying to rewrite a php function to vb.net and can't find out what the heck this does... I thought it did HEX, but I am getting a different value.[code]so basically I need something that takes each character and finds whatever "0x0" is doing.
View 2 RepliesIs it possible to converty a type System.DBNULL to a string type?
View 3 RepliesI am getting this datetime format in an xml file:
2012-06-14T11:15:41.587-07:00
2012-06-14T10:49:32.397-07:00
2012-06-11T11:10:49.2-07:00
I believe I understand some of it, please correct me if I am wrong:
2012-06-14 = date
T = time identifier
10:49:32.397 = hour min second milliseconds
-07:00 = I have no idea
I need to convert this to something I can sort on for my datagrid view.
When I try something like this:
Console.WriteLine(String.Format("{0:d/M/yyyy HH:mm:ss}", "2012-06-14T10:49:32.397-07:00"))
I'm getting the original string back out with no conversion.
I'm pulling a saved DateTime using
Dim testDate As DateTime
testDate = rsQuery.Fields("ScenarioDate").Value
I have a date that is in string format and I want to put it in a datetime field. I tried
[Code]...
I am trying to write a function which accepts a string as input and gives the integer as output,The string can be in any of these format for ex:2,500.75 or 2.500,7501 or 2'500.7513 or 2500,254 the output of function should be like 2500.56 Basically trying to get rid of the thousand separator which can be either a comma,or apostrophe. ..
View 6 RepliesI have a string such as
Dim my_sum As string = "100*10-5"
but when i do this:
msgbox(mysum)
it will output "100*10-5"
but i want it too output it so it works the sum out which should be 995
How could i convert a Greek string, to Unicode with VB.NET, without knowing the source encoding?
View 1 RepliesI've looked and looked + tryed debugging but I'm not getting anywhere fast I'm trying to import a usb radio driver and I'm 99% there. I can turn it on / off and get / set the freq.. but I'm struggling to get the rds name from it. The VB code for the function is
[Code]...
colordialog1.color will yield "Color [A=255, R=95, G=33, B=222]", but i would like to return an integer like 2349821 instead. how is this possible?
View 2 RepliesThis is more of a curiosity question on what the VB compiler is doing. Basically the following code generates an error,
If "String" = CInt(1) Then
End If
As it should. What makes me curious is the error reported is
Conversion from string "String" to type 'Double' is not valid.
So, I guess my question is, why is the compiler attempting to convert to a Double when I would assume it should be converting to Integer?
Here's my code, it works but its not elegant --- can this be improved? The final multiplication is done for the Analog to Digital conversion (weight of the LSB).
Public
Class Form1
Private
Sub Button1_Click(ByVal
sender As System.Object,
[Code] ......