Converting String To Its Single Representation?
Feb 15, 2010
I am trying to convert a string to a single. Ive tried csng() directcast() and single.parse. The first two methods crash. Single.parse says input string was in incorrect format. The number is 777.7932 so should convert fine. Ive tried it this way:
'x = single.parse(pts(0), globalization.NumberStyles.AllowDecimalPoint)
how can i convert a string representation of a single data type that is read from a text file into its single data type. I checked control panel and globalization settings are set to english.
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Jan 14, 2011
I 've an ArrayList and to join all its elements with a separator in one string I m using...
Dim s As String = String.Join(",", TryCast(myArrayList.ToArray(GetType(String)), String()))
however, I would know if there is a smarter/shorter method to get the same result,or same code that looks better...
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Jun 24, 2011
Is there a fast way in VB.NET to take a 32-bit int and cast to a 32-bit float while preserving the underlying bit structure? BitConverter will do this, but I'd like to cast it directly without involving byte arrays.
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Jun 3, 2011
I want to make a hashtable of object references and I want a different object's reference to be the key. How can I do this in vb.net? In java (assuming I am using the default toString method and that add() takes a string as a key and an object ref as the value) this would be something like: hashtable.add(obj1.toString(), obj2)
I do not want to use a vb.net gethashcode() function because I want deep clones of objects to have different identifiers. A related question is what is the default toString in vb.net? How can I get a string that represents an object reference in vb.net?
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Jan 12, 2012
<edit> Now showing the difference as a DECIMAL. Result looks like zero every time. </edit>Disclaimer: This code is provided "as-is" and should be treated as Freeware.( However any donations would be welcome as I have a "so-so" part-time job ).Please note all real numbers to be used should be in this format
"0.000000000000"Do not use numbers in string format in scientific notation like "1.2345E -06"I was feeling bored and decided to add to the code from JohnWein in this thread where I have used a routine that will multiply the contents of two long strings together.>>[url]I have now added a bit of code so you can multiply two really long numbers with or without a decimal point as a full-stop ( period or dot, call it what you like ).
[code]...
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Jan 23, 2012
I am trying to log the contents of an object to a text file. If I do a debug.print of the object itself in the immediate window, it prints all of the values of the object's properties:
?mDb.DatabaseOptions
{Microsoft.SqlServer.Management.Smo.DatabaseOptions}
AnsiNullDefault: False
...
UserData: Nothing
However, I can't seem to access this as a string in code due to a type mismatch. I assumed I could get this information using the .ToString method, but all that returns is the object description with none of the properties or values:
?mDb.DatabaseOptions.ToString
"Microsoft.SqlServer.Management.Smo.DatabaseOptions"
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Aug 7, 2009
I want to retrieve an object by using a string representation of the objects name. For example lets say i want to change the font of 3 labels on a form programatically. Instead of changing the font property for each individual label like so:
Label1.Font = FontDialog1.Font
Label2.Font = FontDialog1.Font
Label3.Font = FontDialog1.Font
I want iterate through the labels in a For..next loop like so:
[Code]..
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Mar 17, 2010
So I'm building an application that is going to do a ton of code generation with both C# and VB output (depending on project settings). I've got a CodeTemplateEngine, with two derived classes VBTemplateEngine and CSharpTemplateEngine. This question regards creating the property signatures based on columns in a database table. Using the IDataReader's GetSchemaTable method I gather the CLR type of the column, such as "System.Int32", and whether it IsNullable. However, I'd like to keep the code simple, and instead of having a property that looks like:
[Code]...
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Feb 7, 2010
I have a Generic List of Bytes with Hexadecimal values stored in it. for example, elements 0 to 3 contain 42 9E D1 EC which as a single, is equal to 79.41. I've tried using:
dim foo as string = ""
for i as integer = 0 to 3
foo = foo + system.convert.tosingle(byteArray(i)).ToString
[code].....
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Oct 22, 2009
Is there any way for a program to look at the text in, for example rtbInput and examine each letter individually as it goes? I mean, if the text in rtbInput is: How do I get the program to look at the text as 5 different strings: "H", "e", "l", "l" and "o"?
[Code]...
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Apr 10, 2009
I'm having a problem converting a string of letters to a string of numbers. I've tried:
Dim A As String = ""
Dim strOutput As String = ""
Dim X As Integer = 0
[Code].....
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Nov 6, 2009
is there an object representation of System that i can Extend upon such that the extended method becomes global.
<Runtime.CompilerServices.Extension()> Public sub globalprocedure(ByVal asystem As ?)
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Jun 27, 2012
[URL]notice that the tag topic count for C# is in excess of 8900 while the vb.net tag topic count is sitting at 1019. Does this mean that there is a shift towards c# as a .net language of choice. the only reason I decided to build some applications for work using c# was that I like curly braces - after all vb has the same language support as c#, doesn't it so there should be no advantage to choosing one over the other; other than curly braces;)
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Apr 16, 2010
Is it guaranteed that the numeric values for an Enum with only uninitialized values start at zero and increment by one in the order defined?
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Aug 15, 2009
I am totally new to the graphical representation of the data. I want to make a progress report of students, based on marks achieved each year.For example, in year 2005 marks were 750. in 2006 780 in 2007 800
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Aug 9, 2011
I am struggling a bit with a string conversion. My platform is VB in Visual Studio 2010, windows form application. What I have is a Single float that occupies four characters of a string. Where Chr(0) is the LSB of the single and Chr(3) is the MSB of the single. This string is loaded by a built in function that communicates to an external microcontroller via tcp/ip that I do not wish to modify. I am having trouble figuring out a way to get these chars from a string to a single data type. I dont need to convert the data, just move it. But I keep getting type errors and not sure how to handle it in VB.
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Aug 2, 2011
I have a file from the client which is a text file. I have to decode the file to a graphical representation. Is there any way I can do it?
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Dec 30, 2009
I want program to do Graphical Representation of array Sorting in vb.net with bars/shapes.
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Feb 26, 2012
i would like to convert a single byte to a string.
dim mybyte as byte = &h11
dim mystring as string
i tried
[code].....
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May 12, 2009
I have a problem with double and single quotes in a string.I have a textbox where i take a string from.In the textbox are double quotes and single quotes quotes.Problem is that if i return the string all the single quotes are replaced by double quotes.How can i get it to keep the single quotes as single quotes?
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Mar 15, 2011
It would seem to be Dim MyString as String = """""" but VB doesn't like that.
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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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Aug 30, 2010
how to convert a number value to its string value (ie.,1198.00 should be interpreted as Thousand Hundred and ninety eight)
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Oct 29, 2010
I am returning one row from the database, and I want to convert the SQLDataReader to a string format, so I can pass it to my webservice.
Dim rdr As SqlDataReader = sqlcmd.ExecuteReader
If rdr.HasRows Then
rdr.Read()
[Code].....
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Nov 16, 2009
There is a lot on the internet about converting a int to base 2 string, but I need to convert it back.
[code...]
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Mar 23, 2010
I have made calculator in visual basic that can calculate the costs of products. You first select the type of product. Then you insert the dimensions. After that it calculates de costs. The type op products are stored in a Access database. In this database is stored a formula as a string. The problem is that i can't caculate the selected string with the formula and the given dimensions.
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Feb 3, 2011
I am trying to convert a string of binary into hex. I have tried several ways and none have worked. This is my latest try. The code runs but doesn't appear to do anything.
[Code]...
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Mar 10, 2010
I am using the .NET Framework 2.0, and I am trying to code a client bot for a game called Minecraft, Originally written in Java, there have been quite a few people who have made custom multi-player servers for this game, Primarily in C#, or in a language that i've never heard of, such as Pascal.I'm looking right now at sending this:
Packet ID: 0x00 (0) As Byte
Protocol Version: 0x07(7) As byte
Username: "umby25" As String
[code].....
"Byte cannot be converted to 1-Dimensional array of byte"
I don't understand why this whole thing would work in all of the other programming languages, but not Visual basic.I have tried converting the string using the same method that one of the open source C# servers used, and it failed, telling me that the dictionary does not contain that or something.
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Jun 21, 2010
I am having trouble converting a string value to a text box name.The text boxes are created at runtime and I need to get the text value out so I can store them. I keep getting the error [code]
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Mar 11, 2011
How can I convert a string into an array?
The values are passed as a string:
Dim strInput as string
strInput = "Tom, John, Jason, Mike"
My error message is: Value of type 'String' cannot be converted to 'System.Array'
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