I am trying to assign a specific width to my image in asp.net (using vb.net). So I used the next code:
<asp:Image ID="PercentageImage" runat="server" Height="7px"
Width='<%# Eval("votsGraph") %>'
ImageUrl="~/images/bar.JPG" />
So how do i cast this one? (The type of votsGraph is float.)
OK so in this hex editor I have, Hex Workshop, when I search for a 32 bit float i type in (lets just say) 1. It then spits it back at me in a 32 bit float, but also as hex.
the 32 bit float for 1 = 3F80 0000
I really cant grasp this idea, let alone put it into my program.
able to convert an integer to a float then to that sort of hex.
I was working on editing a code for a simple text program, but when running the program for multiple lines, the text being read gets too long or too many lines, the computer slows down alot and almost stops functioning. I am using standard integers like document.lines.length or listbox.lines.count. I think these are standard integers and I need to know how to enable them as Long of Float Integers.
I'm assuming I just change
Dim X as integer to
Dim X as long
or Dim X as int16
But I'm not sure as everytime I change something I get cannot convert to double. The code I'm interested in changing is ...
For i As Int16 = 0 To ListBox1.Items.Count - 2
The list box will only get to about 3000 items or so.
and
For iPos = 1 To xy
If Mid(sString, iPos, Len(Text1)) = Text1 Or Mid(sString, iPos, Len(Text2)) = Text2 Then
JJ = TextBox1.GetLineFromCharIndex(iPos)
This read box will read documents above 32,000 lines, which is the reason for not wanting to use Integer.
I would like to cast a double to an integer, but rather than keep the numerical value the same I want to keep the bit pattern the same (this is for a compression algorithm), is this already possible in VB.net, or would I need to try and come up with my own method for doing this?
View 3 RepliesIs there a better way of testing if a string can be converted to an integer other than something like the following?
Public Function IsInt(ByVal value As Object) As Boolean
Try
Dim temp As Integer = CInt(value)
[code].....
Could anyone assist me in solving my problem ? My code was written in VB (VS 2003.)I got this error: System.InvalidCastException: Cast from type 'DBNull' to type 'Integer' is not valid. in my code.Here is the code line where I am getting the error: LeadCampusID = CInt(.Item("mkCampusID"))I fixed the error by making the changes in the code as :
If Not IsDBNull(.Item("mkCampusID")) Then
LeadCampusID = CInt(.Item("mkCampusID"))
Else
[code].....
VB 2003 Combobox collection from -3 to +3 The goal of the message is to warn the user that the systems only covers +- 3 timezones, if he types in for example +4 or -4, he gets the message (by the way: how to protect the system if he types for instance a character?)
When I run the application: 'Unhandled exception: Cast from string "click" to type 'integer' is not valid
Private Sub ComboBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.TextChanged
[Code]...
Combobox collection from -3 to +3 The goal of the message is to warn the user that the systems only covers +- 3 timezones, if he types in for example +4 or -4, he gets the message (by the way: how to protect the system if he types for instance a character?)
When I run the application: 'Unhandled exception: Cast from string "click" to type 'integer' is not valid
Private
Sub ComboBox1_TextChanged(ByVal
sender As
Object,
ByVal e
As System.EventArgs)
[Code]...
cast integer values to an array of enum values?
View 2 RepliesI read somewhere that older VB .net (pre VB .NET 2005?) couldn't use overloaded operators in a C# class. Is it true for overloaded cast operators?Either way do you guys think it's a disadvantage for a C# class library not to include them and arithmetic methods as actual methods for other languages, like:
ToDouble
ToFloat
FromDouble
Add
[code]....
I am working in windows application, I have one field in sql server which has data type decimal(15,10). When I enter data from application like "123456789012345". It should be convert it in 12345.678901234 when press tab on text box.
View 4 RepliesMy program works through each cell in a raster bitmap loooking at the r g b values. Actually I'm just working with greyscale so r = g = b. I use the get pixel method to return the 8 bit value of each pixel (0 - 255). However I'm now working with a single channel 32 bit float bitmap. I can't load it into VB. I tried Dim myBitmap As New Bitmap(OpenFileDialog1.FileName) but this fails with an unspecified error when trying to open a 32 bit tiff.
The question is: which graphics format will allow me to load a 32bit bitmap into VB, and if I succeed will the getpixel method return 32bit float results for the greyscale level for each pixel?
Deviding an int by zero, will throw an exception, but a float won't - at least in Java. Why a float have an additional NaN info, while int haven't?
View 6 RepliesI can't round up the decimal number using VB.net
i'm using Cint(12.5) this must be 13 but it is not so i try Round(12.5) but still not roundup what do i do?
I'm building a card game called 11-UP. See the game here.I've gotten to the point where I need to make scores show up when the selected cards have a sum of 11. For example, if the card is worth 200 points, then "200" should become visible for about a second and then "float away".
I know I can do this with a timer and the location property. I was thinking of creating an array of 22 timers, one for each card. When the selected cards have a sum of eleven, I enable the timers for each selected card. The timer makes the "score" for that card appear, then move up a few times, then vanish.
Does anyone have a better way to do it? Maybe with only one timer?Also, how could I make the "scores" become more transparent as time advances? I'd like to make them not only float away, but also "disolve."
For example: how could I have 3 pictures aligned to the right all in one row, then when the far right picture is deleted the other two move to the right to fill that space. Edit: I'm looking for this capability for both Windows forms and web forms. I'd be happy right now if I could just get the code for Windows.
View 1 RepliesPrivate
Sub cmdExit_Click(ByVal
sender As System.Object,
ByVal e
[code]....
actually when I edit float value in datagridcell , I want only two numbers to be displayed after point(.)....i.e 2.35 instead 2.34567 more over am getting it but the actual thing is that value is not getting update in the dataset , but when I reload the form it shows like 2.34567 only instead i want 2.35...
Public
Sub GridCellValidation(ByRef dgvRow As DataGridViewRow, Optional ByVal FillControls As Boolean = False)
[Code].....
I am receiving a data stream which contains 4 bytes of data which need to be converted to a 32-bit float (IEEE 754). This was easy to do in C as I created a union with a 4-byte array and a 32-bit float. Job done. However I have no idea how to accomplish this in VB (pls note I do not code in VB).
View 3 RepliesI am working on a simple asp.net vb.net code behind page.I need to accept input from an asp textbox control when the user clicks the 'calcButton'. I've set up an event handler for the click:[code]I looked at the msdn page and it says to use ToDecimal.
View 1 RepliesI have to read some float values in vb 2005 from a binary file created in powerbasic .I have declared one structure to read this .In the structure i am trying to read those vaues in single datra type object but the values returned are like 4.02365-E67 I have tried all the data type but unable to read it properly The structure is
Structure ThirtyminUPD
<VBFixedString(10)> Dim MSymbol As String
Dim MTime As Int16
Dim Mopen As Single
[code]....
read and write on other process float memory address w/ pointers and offsets
i do have a module well it works with 4bye and long but for some reason it doesnt work with float address
how would i go about converting a float value to string?
View 9 RepliesI have two dbf tables and must compare them by column (field) types. For example:
Table1: Id (Numeric) | Name (Character) | Salary (Numeric)
Table2: Id (Numeric) | Name (Character) | Salary (Float)
With these two tables program should display message like (types do not match in field SALARY [F <> N]) where F is float and N is numeric.
Is a VisualBasic 4-byte single precision floating point variable the same format as Visual-C++ float?
I need to send floating point values from an embedded PowerPC written in gcc C++ to a VisualBasic GUI,and want to first test it by simulating the embedded using Visual-C++.software developer
When i try to make a classes by LINQ to SQL for a database i can see all fields from database ( which contain a int filed and nvarchar(50) and Float but when i try to make crystal report and make a connection from current connection i can only see fields of int and varchar(50) but i can not see float fields
View 4 RepliesI am reading and writing binary data through a serial port and must (a) reassemble the incoming four bytes that make up a IEEE single-precision float into an actual float, and (b) disassemble a float into its four constituent bytes before squirting them through the serial port.
I am using VB.NET 2008. In VB6, I could use the LSET command, as in:
Code:
Private Type typByteArray
B(1 To 4) As Byte
End Type
[Code]....
But of course this code won't work in VB.NET. In C it would be easy to handle situations like this by using unions, but VB.NET doesn't support them.
How do i float a label (label1) in the bottom left of form? so if form resizes it still stay in bottom left, though 5px from left and bottom.
View 2 RepliesI want to draw a rectangle in the form and their height and width must be in float values. I want to display the height and width of the rectangle in the output
View 3 Repliesactually when I edit float value in datagridcell , I want only two numbers to be displayed after point(.)....i.e 2.35 instead 2.34567 more over am getting it but the actual thing is that value is not getting update in the dataset , but when I reload the form it shows like 2.34567 only instead i want 2.35...
[Code]...