How To Check If Variable Is String Or Double Type
Jun 16, 2009I want to see if a variable's type is string or double type. How to do it in vb.net immediate window?
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Explicit Conversion - Convert The Variable D From Double Type To Integer Type And Store The Result As 132
Oct 22, 2009I want to use explicit conversion (CType function in VB.NET) to convert the variable d from double type to integer type and store the result as 132.
Imports System.Console
Module Module1
Sub Main()
[CODE]...
This is my code. But Visual Basic tells me an error: Error1Type 'i' is not defined.C:\Users\mihaispr\Desktop\Conversie explicita\Conversie explicita\Module1.vb1922Conversie explicita
Store Values To A Double-type Variable, And Ask To Display It On The Screen, There Seems To Always Be A Discrepancy?
Mar 16, 2010Whenever I store values to a double-type variable, and ask to display it on the screen, there seems to always be a discrepancy, for example, I entered 7.416 to a textbox and assigned it to a double. When i ask for it to be displayed, it used to be that the 7.416 is returned to me. But just a few days ago, when I debugged my program again, it returns numbers like 7.4159987.......[code]....
View 7 RepliesPut Data Containing Double-quotes In String Variable?
Oct 14, 2011How to put data containing double-quotes in string variable? Aug 01, 2003 02:30 AM | LINK I need to store a string that contains words in double quotes. The complete string data is presented to the variable in double quotes, but the next double quotes within the data ends the string and the remaining text gives a syntax error. How can I place literal double-quotes in a string variable? For example:
[Code]...
Create A Function Which Have Either 1 Parameter With A String As Data Type Or 2 Parameters With Double As Data Type?
Jun 11, 2012I need to create a function which have either 1 parameter with a string as data type or 2 parameters with double as data type.Something like the substring method.
View 2 RepliesDouble If Statement - Getting Error "Conversion From String "frog1" To Type 'Double' Is Not Valid."?
Apr 12, 2011I've been just making random programs trying to get the hang of the new language this time I was making a leap frog game where it switches back and forth beetween frogs every time a button is pressed. It also checks if the frog can land in the text box above the button pressed, if there is another frog there a message box will pop up saying sorry space is filled other wise the frog should land there.
[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
Conversion From String 'Admin' To Type 'Double' Is Not
Mar 1, 2011I'm having an issue with 'access levels' The database is connected and my user levels are set up, Admin and User, I'm trying to set up so when you log in it checks if the username falls under an admin in the database. but I seem to be getting this Conversion from string "Admin" to type 'Double' is not valid error, [code]
View 5 RepliesConversion From String To Type 'double' Is Not Valid
Mar 4, 2009I 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]
View 1 RepliesConversion From String To Type Double Is Not Valid
Oct 16, 2011i 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]....
Conversion From String To Type Double Is Not Valid?
Feb 8, 2010I 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".
View 1 RepliesConversion From String To Type Double Not Valid
Mar 11, 2009I'm getting this run time error using VB 2008 Express:
"Conversion from string "" to type 'Double' is not valid."
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] .....
Conversion From String To Type Double Not Valid?
Apr 27, 2010Imports System.Math
Public
Class Form1
'Declaration
Public
NotInheritable
Class Convert
[Code] .....
Getting Conversion From String To Type Double Error
Dec 4, 2009I have code that loops through a string array to add words one at a time to a line of limited length. I am trying to fit a phrase on up to four lines, centering the words on each line. My code appears to add the first word but on the 2nd word I get a "conversion from string "IS" to type 'Double' is not valid" error.
Here is my code so far:
varResult = Split(strPhrase)
intWordCnt = UBound(varResult) 'count words in phrase
'make words fit on one line
[Code]....
The phrase in strPhrase is "GOD IS LOVE"
I don't understand why I am getting this error when I didn't on the first loop through the code and it Put the word "GOD" into the line.
VS 02/03 - Cast From String To Type Double Is Not Valid?
Nov 29, 2010I am currently going through a book on beginning VB,NET and am trying to complete one of the exercises in the book. I have created a function that validates user entries to check that they are numeric and within certain a range.If text value is entered into the textbox I get an exception error saying that
"Cast from String to type double is not valid"
[code]...
Check The Final Type Of A Variable?
Sep 6, 2010I have a BaseClass, a DerivedClass1 and a DerivedClass2 from a third party library. DerivedClass1 and DerivedClass2 both inherit from BaseClass.There's a ContainerClass, from the same library, with a member variable ActiveItem, which can be of DerivedClass1 or DerivedClass2, so it is declared as BaseClass.I want to know if ActiveItem is of DerivedClass1, as it can change in runtime without notice.If I do
Dim isDerivedClass1 as boolean = TypeOf(oject.ActiveItem) Is DerivedClass1
then I get a compile time error, telling me that ActiveItem can never be of DerivedClass1 type.I have tried several combinations of GetType and TypeOf but it doesn't seem possible to check this. I have also tried to declare an auxiliary DerivedClass1 variable and comparing their types, but haven't got any luck either.
Edit:The following code doesn't compile in vs2005 SP1.
Public Class Base
Public x As Integer
End Class
Public Class Derived1
[code]....
Conversion From String - SSN" To Type 'Double' Is Not Valid
Aug 13, 2009while 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.
InvalidCastException: Conversion From String To Type 'Double' Is Not Valid
Nov 2, 2010I 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]...
Strange 'Conversion From String To Type 'Double' Is Not Valid
Aug 25, 2009I 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="?
VS 2008 - Converting From String To Type Double Not Valid
Mar 4, 2010I'm trying to delete the 2 last characters of a string if they are "||". This is my
Dim MyReader As Microsoft.VisualBasic.FileIO.TextFieldParser
MyReader = My.Computer.FileSystem.OpenTextFieldParser(playlist)
Dim TextFields As String() = MyReader.ReadFields()
Dim last As String = TextFields.Last
If last.Substring(last - 2) = "||" Then
last.Remove(last - 2)
End If
But it gave me the following error on the highlighted line:
"The converting from the string to the type Double is not valid."
VS 2010 - Conversion From String To Type Double Not Valid
Sep 15, 2011I 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] ......
VS 2010 Conversion From 'String' To Type 'Double' Is Not VALID
Apr 26, 2012[code]I'm trying to leave the textboxes A, B and C EMPTY so an error message box will appear saying "You did not put any value in textboxes A" or "B" "C".. but my program works if you put a value in the three boxes.[code]
View 6 RepliesVS 2010 Conversion From String To Type 'double' Is Not Valid
Sep 1, 2011I have a form, which holds several comboboxes, textboxes, checkboxes.I use an msaccess database to store the values into.When I enter text in a textbox and then click the save button I get the following error:conversion from string "" to type 'double' is not valid.But I really don't understand, the field of the database where the textbox text is being stored in is a text type.I searched google for it and the problem seems to be that the type of data from the textbox isn't the same as entered into the field of the database.But the strange thing is, is that as far as I can see, it is.[code]
View 5 Replies"conversion From Type String To Type Double Is Not Valid"
Aug 13, 2009I created an application in vb.net 2005. It works fine on my machine. I tested several different test machines and all were working fine. As for the client, it's generating an error. My application reads from an excel sheet and imports the values to an oracle database. the error being generated is: "conversion from type string to type double is not valid". Why is it generating only on the client's computer and not mine?
View 13 RepliesForms :: Conversion From String To Type Double Is Not Valid' Error?
Jun 25, 2011I 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
Forms :: Threads 'Conversion From String To Type 'Double' Is Not Valid'
Mar 30, 2011I have a application that writes and reads from a serial port.The com-port is opened elsewhere in the early stages of starting / running frm_Main and is not shown. I have a button1 on my form and when I click it, the module 'RTUValues_Get_IOData' executes perfectly ok, with no errors.[code]However when I call it via a thread [button2], I get the following exception error and it hangs, at the part shown above in RED"Conversion from string "" to type 'Double' is not valid."
View 5 RepliesVS 2010 Conversion From String DESC To Type 'Double' Is Not Valid?
Jul 26, 2011I 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.'
Below is the code I am using for the sorting:
[Code]...
.net - String Query Error Conversion From String "iif(CurCons = 0, " To Type 'Double' Is Not Valid
Jul 4, 2011I 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")
Converting Double Data Type To String Data Type
Jan 31, 2010I have a program that calculates commission, but if the commission is nothing then I do not want it to show a zero commission. I want a message box to show a message that there is no commission earned.
View 1 RepliesPut Into A Type "double" Variable?
Sep 21, 2011What's a good way to parse this particular type of xml? I'm trying to pull out the "900.74" which needs to be put into a type "double" variable.
<Field name="TotalAmount_ColumnSum" at="6" composition="2">900.74</Field>
There are dozens of lines starting with "<Field" in the file.
Converting A String Variable To A Property Type
Aug 28, 2009I have in my My.Settings four settings [code] now I want to get the value of the current setting from the My.Settings.SettingName. [code]
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