VS 2008 Taking Result And Converting To Percentage?
Mar 13, 2010
I'm trying to take a result for a simple website conversion calculator and turn that into a percentage. So for example, if the result is 0.314500 I want to turn that into 31.4%.Here is the code I have so far for this:
Visual Basic 2008
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim d As Decimal
d = (TextBox2.Text.ToString / TextBox1.Text.ToString)
Me.TextBox3.Text = Decimal.Round(d, 4).ToString("f6")
End Sub
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Sep 20, 2010
I have a table in a data grid the columns are bound to the columns...
SQFT QTY WIDTH LENGTH
i also have added into the datagrid an unbound column called Yeild%.what i'm trying to do is the following formula
SQFT / (QTY * (width * length / 144) and have the result return the answer in the unbound yield column for that row represented as a percentage
So if SQFT = 178 QTY = 2 Width = 144 Length = 102 answer would be 0.87 (rounded)
so this would be 87%
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Nov 22, 2009
I have a function that works great in C# that I'm converting to VB.Net. I'm having an issue converting the result set to a generic list in VB.net.
The code:
Public Function GetCategories() As List(Of Category)
Dim xmlDoc As XDocument = XDocument.Load("http://my_xml_api_url.com")
Dim categories = (From category In xmlDoc.Descendants("Table") _
Select New Category()).ToList(Of Category)()
Return categories
End Function
The error occurs when convertng the result via .ToList(Of Category)() The error:
Public Function ToList() As System.Collections.Generic.List(Of TSource)' defined in 'System.Linq.Enumerable' is not generic (or has no free type parameters) and so cannot have type arguments.
Category is a simple object I've created, stored in the App_Code directory.
I have the necessary "Imports System.Collections.Generic" reference in the file so I don't see why I can't convert the result set to a generic list.
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Jan 28, 2009
I have a program that is calculating the cost of a certain number of plane tickets, the validation and basic calculations are fine the only problem i've got this: There is a discount text box field called "txtDiscount" where IF a user enters a number it will discount this as a percentage off the total cost of all the tickets, but I cannot get it to work [Code]
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Dec 15, 2009
what I need is the following:
1)A way to add a percentage to a ProggressBar.
2)A way to send by email the text that contains a TextBox.
3)A way to call the text of a TextBox in a MessageBox.Show.
4)A way to save what is written in a TextBox, just before it is closed.
5)A way to allow only numbers in a TextBox.
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May 28, 2010
I was just thinking is there a method i can use. For example if the maximum value is 200 and the current value is 97. or i have to use math to get the percentage.
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Sep 11, 2010
Is there a way to use ReadAllLines to read in a text file that contains some Chr(10) (linefeeds) but uses ONLY the Chr(13) (carriage return) as the true end-of-line?What I mean is, DON'T treat a Chr(10) as the EOL. ONLY treat a Chr(13) as the EOL.Obviously I could just read in the whole file as binary and then split it into lines by scanning for Chr(13), but I just wondered whether or not there's a setting in VB.NET to set the EOL character so I didn't have to do that.
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Feb 1, 2011
I have a form with 10 math questions. Beside each question there will appear a check mark if it is right and a X if its wrong. I also have a label that will display a score in percentage. If 2 are right then it will display 20%. If they are all right then it displays 100%. My problem is ...how can I code the event. I thought of case select, but that would mean 100 cases to make it work.( If check1 and check2 are visible then display 20%, but if its check1 and check 7? Thats alot) What I want ot know if there is an easier or shoter way to ontain the same result. I am working with Visual Basic 2008.
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Jul 12, 2009
I have wrote a program that uses sendmessage to automate clicks. I have also made it where it can minimize to tray, hides form & shows an icon in tray. The problem is that when it's minimized it takes focus from whatever else I'm doing, like if I'm typing in Notepad when the program sends the message it takes the focus from notepad.
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Feb 26, 2010
I am trying to simulate human temperature taking. Basic i just need a button, a text box , a progress bar and a timer.What I want to do is that when the button is clicked, the progress bar will slowly increment and after it reaches maximum, a random number in the range 35-40 will be generated in the text box.Now so far, this is what I`ve done:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Timer1.Start()
Dim r As New Random
[code]....
So the progress bar is working fine. The random number generator too. But here are my problems:
1-Once the button is click, the number is generated. I would like that to happen after the progress bar reaches maximum.
2-So this is suppose to be a temperature gadget for kids and therefore when a certain amount of temperature is reached...an alarm is sent to the parents. How do I generate a dialog box (to acknowledge an alarm was sent) in case the temperature exceeds say 38? The dialog box should close after some 5 seconds. If possible, in case of such excess, the button color should turn to red or otherwise(no excess) blue.
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Aug 26, 2010
Any way to prevent my application from taking screen shot. I am using this method
If Clipboard.ContainsImage = True Then Clipboard.Clear()
If this is correct? And also what about screen capture application they take the screen shot without using clipboard what is logic behind it and if there is any way to resolve it?
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Nov 15, 2009
I am working on a program where the user inputs values, then the program calculates those values and outputs the sum. When the user hits the button exit then those values entered by the user are saved. When the user starts the program again, the values are still there. I wrote the code and everything works fine. I am saving those values in notepad... and the program grabs the input in notepad and outputs those values to the program. But here comes the problem: Lets say the user wants the information in a certain column to be added to another column somewhere in the program. Is that possible ? And if it is can it be done when I am saving those values in notepad?
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Jun 11, 2009
I got a table related to another table by orderref. I need to know what should be my SQL adapter command if I need to take some information from one table and some from another where orderref = "" or should I be making two separate SQLs?
I used to have this when I had only one table:
myStr = "select * from orders where Orderref='" + txtorderref.Text + "'"
Dim sqldaHistory As New SqlDataAdapter(myStr, nwindconn)
sqldaHistory.Fill(myDataset, "orders")
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Jul 2, 2009
Is there anyway I can do a a custom screen shot? like the height and width of it? This is what I want to do
Left = 18
top = 556
right = 914
bottom = 289
So a regular screenshot on my pc is 1152 by 864. So how would I say do a 300 by 400 screenshot?
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Dec 10, 2010
I am currently having a headache on how to solve this problem that i am facing. here is the situation: I have a combobox and a list box on the main form. The combobox will get the data from the ms access database. In the database, i have the details of a person's IC, Name and DOB say for eg on one entry I have D215311523C,SHAWN,13/04/1987 So now, my combobox on form load will show the list of dates in the database to allow the user to search base on the date itself by clicking on the selected date. So when the user clicks on the particular date say 13/04/1987, people in the database whose birthday is 13/04/1987 will be shown on the listbox.Meaning to say if i have 3 entries whose dates are the same 13/04/1987, 3 entries will appear. If there is only two entry, then two results will be shown. But now, when i do a single click on the date, one result will be shown. That is correct. But the problem is when i click on the same date again, three of the same results will be shown on the list box. that is it will display : 13/04/1987 13/04/1987 13/04/1987 which is not the case. Then it will show more duplicates of the same results if i click more times on the same date which should not be the case.
Dim n As Integer
Dim numbers() As Integer
Dim StartFrom As Integer
Dim EndAt As Integer
[code].....
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Sep 25, 2010
I am using a datagrid in my where i am having four columns. In first column the parameter values are entered and in the second column measured value is entered and in third column the nominal value is entered.Inthe fourth column the result is displayed by subtracting the measured value and nominal values. I am doing this calculation in Datagrid cell validated event. What i want is,there will be many rows in the grid,when typing the value in the third column the corresponding result will be displayedin the rowof theresult column,save button will be displayed while the form loads,when the calculate part is completed that is there should not any cell of the resut column empty then i should enable the save butto.
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Oct 14, 2009
I am encountering the following issue So i have a device that sends stuff at the serial port, i then parse it and put it into an array of bytes like that:
Dim HCI_Command_Rcvd_Byte() As Byte All good till here What i wanna do is make an array and put this result every time the serial port gives me a new result, for example:
[Code]...
Basically what i wanna do is let the port parse the messages, fill in the array with the result at an empty spot in this array and then i will have a separate thread that will look in into this array in each non empty space and after it looks into the non empty space it will use or discard the info and also mark this space as empty (after it checked)
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Apr 16, 2010
I just read about DataSet in VB.NET, it uses disconnected concept. My question is: if my apps has "List All" button that query data from 1 table in the database, and that table has "very very very" many rows, so my DataSet will be filled with those data and eat up memory. Can I limit the data that being put to the DataSet from that query? But I want to be able to retrieve the next data from the same query if the user want to see it?
For example:
I have 1000 rows in my database, and i query all of them. But I just want 200 rows being inserted to my DataSet, but if the user want to see rows number 201 and so on, I want to be able to retrieve the next 200 rows, and so on. So it just like cutting those data into a group of 200 rows. Can I do this with the concept of "disconnected" of the DataSet?
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Feb 18, 2010
i have a little problem with the ping in vb. i have a richtextbox and i want to write in a text file the result. I done it, but my txt file loks like this:
[Code]...
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Jan 12, 2009
I'm making a program where the answer to a question is a number(0-100) ends up being the file name(picture), EX: 10 = 10.jpg or 98 = 98.jpg this does not work, is there something that will that pulls it out of my resources.
result = 98 PictureBox1.Image = My.Resources.result
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Nov 3, 2009
Im trying to to detect what is in the string and so something for each different result but im not sure howto, here was my first idea but it obviously doesnt work as you cant use contains that way:
Select Case omg.Contains
Case "1"
MsgBox("1")
Case "2"
MsgBox("2")
End Select
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Aug 9, 2011
THis code extract a value from a table to a var...
Dim var_IES_fornecedores as double = 0
For Each dRow In ds.Tables("Tabelavalor").Rows
If dRow("numeroconta").Equals("221") Then
[CODE]...
This is the problem...the numbers after the period should be just 2 and not a lot of numbers...everythin wrong with the code?
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Jul 27, 2010
I have a keyword search in my program that searches a SQL database table and displays all records that match that keyword in a datagridview. As some of the results can be quiet big i would like to highlight the word in the result that matches the keyword in RED. How can i do this?
Dim count As Integer
Dim word() As String
For count = 0 To DataGridView1.Rows.Count - 2
[code]....
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Jan 17, 2010
i have three text boxes that the user will input numerical data into to determine the area of an object. i need the result of my calculation to be displayed in a label but i cant figure it out.
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Jul 6, 2011
I am trying to link a date produced from a month calendar to a three column data source . Col 1 is date and cols 2 and 3 hold password records for use on the selected date. I am able to have the selection from the month calendar produce a result into the label text but cannot see how to relate the date in col 1 back to the label. I am beginning in this world,
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Aug 22, 2011
my goal is to
1.Take an file(exe,dll,etc)
2.Convert it into hex
3.place that hex values in a stack
4.Execute the values inside the stack to its original form(i.e. take the elements out of stack and then convert it to a compile format)
Imports System.IO
Sub Main()
Dim fileName As String = "ABC.exe"
[code]....
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Feb 22, 2010
I have a stopwatch in my program. I start the stopwatch with the start button I created. When I stop it it gives the results of the time in a label that I have named labelTime. I have a Calculate button I have created. I also have a label I have named calcResult. I want to click the Calculate button and divide the stopwatch result (labelTime) by 60. I want the results of this calculation to be displayed in the label calcResult. I keep getting errors saying labelTime is a string value. I believe I will need my calcResult to be a Decimal.
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Jul 30, 2009
I am using a background worker, it runs fine but it does not shows the result. i am using jmcilhinney source to work it out.. have a look.
VB Imports System.ComponentModelImports System.Text.RegularExpressionsImports System.NetImports System.IO Public Class WorkDialogue Private _result As Long = 0L Public ReadOnly Property Result() As Long Get Return Me._result End Get End Property Private Sub
[CODE]...
And the button codding in other form:
VB Using dialogue As New WorkDialogue dialogue.ShowDialog()TextBox2.Text = dialogue.Result.ToString() End Using
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Oct 16, 2009
I want to be able to get the one record I return from a table and put the results into text box's directly rather than put the result into a combo box and then transfer the text across.
Private Sub GetStationStats()
conn.ConnectionString = myConnString
Dim myCommandStationStats As New MySqlCommand
Dim myAdapterStationStats As New MySqlDataAdapter
Dim myDataStationStats As New DataTable
Dim SQLStationStats As String
[Code] .....
The fields Signon and SignOff, plus many others which I didn't include in this sub. Above code does work, its how to get it into a text box.....
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Jan 29, 2012
Warnings: Variable 'targetPath' is used before it has been assigned a value. A null reference exception could result at runtime.
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