Conversion Error On Line 5 Stating 'Conversion From String 'S' To Type 'Double' Is Not Valid

Apr 8, 2009

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]

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Forms :: Conversion From String To Type Double Is Not Valid' Error?

Jun 25, 2011

I wanna perform a function like this. When you save a record, I need the primary key of that record to be auto-generated (X001). Say, when you create a new record and save it, it should be saved like X002 automatically.So to test this before I implement that on this project I'm working on, I created this little program.form.png

All its supposed to do is, when you click on the OK button it shows a code that is fetched from a database table. (X001). Then when you click on it ober and over again. The number should increase. X002, X003, X004... so on.Here's my code

Imports System.Data.SqlClient
Public Class Form1
Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.Click[code]....

But when I run it, it throws this conversion error.exception error.png.I know its pretty straight forward so I tried to correct it with what I know

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Conversion From String To Type 'double' Is Not Valid

Mar 4, 2009

I have this program i have to do for my Intro class. The assignment is to have the user enter a pay code(A,B or C) and the amount of hours worked. If the hours is more than 40hrs, they will receive time 1/2. And it must also calculate a 22% Tax.I was getting this error: Conversion from string to type 'double' is not valid. But some how i eliminated it.[code]

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Oct 16, 2011

i always got error every time i  run this program . here's the code.
 
'declaring variables
Const DEPOSIT As Double = 30
Dim dbltotal As Double

[Code]....

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Feb 8, 2010

I am trying to update MS-Access database where one field is boolean and updating a string. I am getting a error message "Conversion from string "Update Claims set appointed=" to type double is not valid".

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Mar 11, 2009

I'm getting this run time error using VB 2008 Express:
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Below is my coding
If cmbxitem.Text = "Brownish" Then
TextBox2.Text = 37
ElseIf cmbxitem.Text = "White Feathers" Then
TextBox2.Text = 30
'ElseIf cmbxitem.Text = "B/Wchicken" Then
'TextBox2.Text = 15
[Code] .....

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Apr 27, 2010

Imports System.Math
Public
Class Form1
'Declaration
Public
NotInheritable
Class Convert
[Code] .....

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Jan 12, 2011

I'm doing some error debugging trying to get the errors on our website down to a minimum and there seems to be an error that is popping up quite a lot Conversion from string "" to type 'Double' is not valid.

I'm unable to replicate this problem but I can see that it is happening.I've been looking through the code in one of the pages and strolled across this

Dim varWeek As String
If varWeek < 10 Then
'Do something'
End If

Could this be causing the problem as it is trying to see if a String is less than 10 which is an Integer?As I said before as I am unable to see this error in the first place so changing this to an Integer doesn't change anything on my system.

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Error - Conversion From String "" To Type 'Double' Is Not Valid

Nov 18, 2010

I have a bad bug in my program where if a user presses the check(calculate) button when there is no input in the textbox the program displays this error: "Conversion from string "" to type 'Double' is not valid." I would like to resolve this but I am not sure how to do the conversion. I was thinking possibly CType but I am hearing talk of parsing. How do I go about this? the textbox is called mskTxtInput and the button object is called btnCheck which does all the calculation and processing.

Private Sub btnCheck_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCheck.Click
pic1.Visible = False 'hide picture
pic1.Image = My.Resources.A

[code]....

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Sep 21, 2009

I am getting an error: Conversion from string "" to type 'Double' is not valid.If any of my textboxes are blank even though I have used an if AndAlso statement.

Private Sub tbWidth_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles tbWidth.TextChanged
Dim wMath = tbWidth.Text / Form1.tslblWidth.Text
Dim hMath = Form1.tslblHeight.Text * wMath
If Form1.tslblWidth.Text IsNot Nothing AndAlso tbWidth.Text IsNot Nothing Then
tbHeight.Text = hMath
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Aug 13, 2009

while am executing the following code cmdSSN1.CommandText = "SELECT * FROM Patients WHERE SSN='" & Trim(txtSSN.Text) & "' AND id " <> EditPatientId
it shows 'Conversion from string "SELECT * FROM Patients WHERE SSN" to type 'Double' is not valid.

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Nov 2, 2010

I keep getting this error "InvalidCastException: Conversion from string to type 'Double' is not valid." whenever I try and run this piece of code. Could someone explain to me where it is trying to make a conversion to double? No matter what I do to my input string, I get the error.Here is the stack trace:

Input string was not in a correct format.Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.FormatException: Input string was not in a correct format.

[code]...

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Aug 25, 2009

I have a PictureBox, some TextBoxes and a 'generate' button.

code:

I want to create an 'Image Generation' Program with a little help from YugiohCartMaker.net, and when i try to generate, this error appears...

Conversion from string [url] to type 'Double' is not valid.

Also a question... why does it stop with "/y" and not with "/ycmaker/createcard.php?name="?

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Sep 15, 2011

I am currently in programming class and I have tried time and time again to complete a form called "theater revenue" that was assigned to me. Even though I have typed in a lot of code, it keeps telling me "Conversion from string "" to type 'Double' is not valid."

These are the directions: "A movie theater only keeps a percentage of the revenue earned from tiecket sales. The remainder goes to the movie company. Create an application that calculates and displays the following figures for one nights box office business at a theater. Assume the theater keeps 20% of its box office receipts. Use a named constant in your code to represent percentage."

Here is my code....
vb.net
Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click
' Declare variables for the calculations.
Dim dblATS1 As Double
' Gross Adult Ticket Sales as Double
[Code] ......

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Apr 26, 2012

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Sep 1, 2011

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Oct 22, 2011

Using VB.Net If the grid cell value is empty, i am getting error as "Conversion from string "" to type 'Double' is not valid"Code (gridview_CellLeave)

Dim z1, z2, z3, z4 As Int32
If grvList.CurrentRow.Cells(1).Value <> "" Then
z1 = grvList.CurrentRow.Cells(1).Value
End If
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[Code]...

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Jul 4, 2011

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")

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Jun 3, 2011

1st i get this error

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when inserting data to database 2nd error is

when use employee name to get employee id i got result always 0 here is the code

" select id from customers where name2='" & ComboBox1.Text & "'"

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Mar 30, 2011

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Jul 26, 2011

I am developing a site in ASP.Net and VB.Net that will enable users to sort data in a GridView in Ascending or Descending order.The records are coming from an SQL Server Express database.

I go to click on a column heading to sort the data and I get the following error:

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[Code]...

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Oct 2, 2011

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Apr 12, 2011

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[code]...

The error message says "Conversion from string "frog1" to type 'Double' is not valid." I understand what a double is but I've tried And If and that causes a bunch of errors.My Question is whats wrong with this cod and how can I make a double if statement???PS I did try to make an array to shorten this but thats in a different fourm will post URL later

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If cmbactiveproj.SelectedIndex = "" Then
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Jan 22, 2010

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here iam using sqlserver-2005

here my coding is

Protected Sub save_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles save.Click
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[code]....

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Dec 4, 2009

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Here is my code so far:

varResult = Split(strPhrase)
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[Code]....

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Jun 15, 2009

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May 2, 2010

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Dim a As Object
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I tried:

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Jul 29, 2011

I was tried to get quantity from db make use of the selection in list box. I got answered with listbox1. If i selected the item in listbox1 the quantity would appear in textbox1. But in this same code will not work for listbox2 with textbox4.. Here i given the code...

$Con.open()
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[Code]....

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Dec 13, 2010

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Sep 7, 2010

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[code]....

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Jul 16, 2010

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Sep 6, 2011

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[Code]...

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Jul 26, 2011

I am developing a site in ASP.Net and VB.Net that will enable users to sort data in a GridView in Ascending or Descending order. The records are coming from an SQL Server Express database. I go to click on a column heading to sort the data and I get the following error: 'Conversion from string "DESC" to type 'Double' is not valid.'

[Code]...

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Dec 3, 2011

[Code]...

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Feb 12, 2011

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Oct 15, 2011

I'm working with Comboboxes, and I wanna make the following:

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May 14, 2010

I developed a VB.NET application in visual studio 2008. I am beginning to test it on user's machines. For many users, it works just fine. For some users they get an exception error:

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Dim x as double
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Another error the same problem-users are seeing is: System.FormatException: Input string was not in a correct format.

The line of code causing this error is
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Feb 17, 2012

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[Code]...

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Feb 23, 2012

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Apr 5, 2011

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I'm very confused by this since I'm not using a string or a double? The trouble-making line is:

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And here is the full code snippet:

Private Sub btnReserve_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnReserve.Click
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