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)
First of all I got app to convert Degrees, Minutes and Seconds to decimal. But now I need to get Decimal back to Degrees, Minutes and Seconds and I can't get it how to make it because I'm terrible with math formulas... Here is what I done so far:
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click TextBox4.Text = TextBox1.Text + (TextBox2.Text * 1 / 60) + (TextBox3.Text * 1 / 60 * 1 / 60) End Sub End Class
Create a function named DecimalDegrees to refactor the code that converts a latitude or longitude into a value in decimal degrees. (This function will be used inside the functions ValueOf and Distance.) Task 2a: Write the code for the function DecimalDegrees with an input parameter for DegreeString as type string, and returns the value as type Double.
Here is my code for the function part Private Function DecimalDegrees(ByVal DegreeString As String, ByVal degrees As Double, ByVal minutes As Double, ByVal seconds As Double, ByVal ID As Integer) As Double
I am having difficulties with the 2nd part which is I believe to take the code for the calc1 and calc2 buttons and somehow get it to convert to decimal degrees by the function I have created. The buttons would then be removed as the code would automatically take the latitude and longitude and convert the degrees, minutes and seconds into a decimal.
Here is the code for the current buttons: Dim StartPtr, StopPtr As Integer 'To Replace Calculator 1 Button 'Convert degrees before passing argument - Latitude StartPtr = 0 [Code] .....
im using ms visual studio 2005- vb.net (im a new beginner too)how can i convert decimal result into hour,minutes,seconds? i have degrees result --> i already convert to decimal --> now i need to convert the decimal into hours.i use this formula-degree into decimal (just a notes-im try use calculator)[code]
I am working on a simple Point of Sale Program for my Intro to Visual Basic class. I am trying to pull a substring with a decimal point (ex 0009.50) from the string I get from my readline and turn it into a decimal value for calculating money values. Something is wrong with they way that I am converting and I can't find how to to it write in my book.
Private Sub addButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addButton.Click Dim currentLine As String = String.Empty
i am using that code i have one datagridview and datagridview cell 3 value is 7
Dim n As Integer For a = 0 To DataGridView1.Rows.Count - 1 If DataGridView1.Rows(a).Cells(0).Value = True Then n = DataGridView1.Rows(a).Cells(3).Value
[code]....
the above code answer is 4 but i want the answer like that 3.5
I'm working on an app and in the textbox field I would like to be able to convert anytime a user would type .36 it would actually change and display 0.36, mainly I want it on the key press of the period just add a zero before it, and I need this to happen on the keydown event.. anyone have any ideas for me on how to do this? This is all I know so far...[code] One last smidget of problem too, I only want this to happen when the user types . in the beginning not if he types 4.22 with the period being after a digit.
First: Ok so I'm trying to do a project in my beginning VB .Net class. We are supposed to be taking information from 5 different sections of a form and store them into an array and then call upon them later. We have Name, Address, City,State, and Zip. How would I go about saving the information into an array and then calling upon it later through File IO?
Second: I'm having a problem converting my string into a decimal. Whenever I calculate the price of the order I get 3-4 decimal places. Here is a little snippet of my code for the this:
[code]...
I have dimmed pricewithout tax as a decimal and stateselect as a string. The stateselect is based off a drop down list.
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 .
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
I have a FormView from a Data Source that is getting some fields that are stored as Decimals in the SQL Database.
I am grabbing the field from the FormView as such:
Dim AvgTicketL As Label = CType(frmMerchantProfile.FindControl("F10Label"), Label)
I need to take this value, and convert it to an Integer, then send it along to an API. I have the API Calls done, tested and working, but I'm getting an error as when it is getting this value, the API is returning "Must be an Integer" error.
What I have tried so far:
Dim AvgTicketL As Label = CType(frmMerchantProfile.FindControl("F10Label"), Label) Dim AvgTicket1 As Integer AvgTicket1 = Double.Parse(AvgTicket.Text) Do something with AvgTicket1
I have also attempted to Round the Value, then convert it and call it - no luck.
Checking the value of AvgTicket1 (Writing it out to a Label or Response.Write) shows "100", where the database value was 100.00. But the API is still getting 100.00, apparently. Any other conversion method that I've attempted states errors that the Label cannot be converted to Integer.
What are some methods I can successfully convert this value to an integer from a label?
I'm sure this is simple to do but I'm struggling to get this work, I've tried using convert.tostring, decimal.tostring, ctype(object, type) and cstr(object) but without success. I guess I'm trying to change the decial object to a string object and then assign it a value of empty string but always get type mismatch error.[code]
I m using a reportviewer in vs2008 with vb. I have a database field(datatype decimal) on my reportviewer. I added a textbox from toolbox into the reportviewer. Now i want to show currency text into textbox equivalent to that database field value. In short i want to convert 155.75 into "one hunded fifty five dollars and seventy five cents". Here 155.75 is decimal value from database field and one hunded fifty five dollars and seventy five cents" the converted textbox value. I have a private function in my module for conversion. but i m not getting idea how to implement that function on reportviewer or how to call that function to convert as i want.
I was given a school project in which I have to make a program that converts numbers between binary,decimal,octal and hexadecimal systems. I have figured out how to make a function to convert binary number to decimal number [code]With this code,a user can enter a number that isn't binary,and program will calculate it. How can I make that program doesn't calculate those numbers or doesn't accept anything else than 0 or 1? This is needed for other cases like octal and hexadecimal system.
I 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.
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.
How would I convert the two individual byte values (in hex) to a decimal value representing the concatenated hex values? For example, if I have the
Dim byte1 As Byte = &H99 Dim byte2 As Byte = &H99
' I want the decimal representation of the hex value "9999" ' (byte1.ToString + byte2.ToString) which should be "39321" Currently I use the following code:
Dim decVal as integer decVal = Val("&H" + Hex$(byte1).ToString + Hex$(byte2).ToString)
However, when I use this, the value (decVal) comes out to "-26215"
I've searched for the solution for this however 'answers'i've found have perhaps been a little more than I've needed. basically i have 2 textboxes on my form, 'textbox1' is populated by a value from a database, say.. 200.00 on form load. 'textbox2' needs to accept a users value (say 50.00) and then add/subtract that from the value in 'textbox1' when the form's refreshed/submitted/whatever
whats the syntax involved in this process, i've seen efforts involving parse, 'Cint' etc but need to check there isn't some ridiculously easy way of doing this..
