in simple application, when i am trying to convert string "$2432.23" to decimal (i have taken reference from a book, that cDec can handle $ and , ), it gives error InvalidCastexception
Dim amt As Decimal = CDec(txtSubtotal.Text)
i entered "$2432.23"
VS 2008 Conversion from string to decimal problem on XP and 7
View 1 RepliesI am writing a program that asks the user for their name and the number of pieces they completed. The employees are paid more depending on the amount of pieces they have completed(i.e. <200 = .50 per piece, 200 to 399 = .55 per piece, etc.). I have to display the amount earned when the user enters the info and hits the calculate button. I have to use Select Case.
I was thinking this would be an easy program but I keep getting an error for each Case saying "Option Strict On disallows implicit conversions from 'Double' to 'Decimal'. I don't understand why it thinks it is a double. It says I can correct this problem by adding "Cdec" before each equation(i.e.
[Code]...
I have a problem converting decimal number from label's string to decimal... (for example Label1.Text = "0.5"). It works fine on Vista, where I made my application, but it doesn't work on XP and 7. It converts from 0.5 to 5
VB
Dim dec1 As Decimal
dec1 = CDec(word1) * CDec(u1.Text)
'word1' is an integer. For example, if word1 is 100, on XP I get result 500.
Please excuse the newbie question as I started learning VB last week . I wrote the following test code below to add two values entered in two textboxes and display it in another textbox. However I keep getting the exception. "Conversion from string "" to type 'Decimal' is not valid" with the code below and I cannot figure out why . I thought converting using 'CDec' resolves this issue ?
View 3 RepliesI have a xml node, which can be shown in immediate window as
?Me.SelectSingleNode("./FloatAmount").InnerText
"100.00"
?typename(Me.SelectSingleNode("./FloatAmount").InnerText)
"String"
However, I want to return a decimal value.
?cdec(Me.SelectSingleNode("./FloatAmount").InnerText)
Run-time exception thrown : System.InvalidCastException - Conversion from string "100.00" to type 'Decimal' is not valid.
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]
View 2 RepliesWhat is the cleanest, most readable way to String.Format a decimal with the following criteria
start with a sign symbol (+ or -)
a fixed number of fraction digits
no decimal separator
right aligned
pre-padded with "0"'s
I get this error: Conversion from string "" to type 'Decimal' is not valid. Here is where the error is happening please help? decLarborCharge = CDec(txtLaborCharge.Text)and here is the whole function that i have it in: Function OtherCharges() AsDecimal ' This function returns the cost of labor and parts. Dim decLarborCharge AsDecimal decLarborCharge = CDec(txtLaborCharge.Text) Return decLarborCharge EndFunction
View 3 RepliesI am struggling to get this to output calculations correctly. Have I properly made my conversions between decimal,string and so forth. Is that the only reason that a calculation would not produce the right result or is there another reason? I have negative total results for output when they should be positive.
Dim decAmount As Decimal
Dim decInterestRate As Decimal
Dim mdecFutureValue As Decimal
[code]...
If I want to populate an ArrayList with values 1 and 2 it works.[code]I found here a link about string to integer conversion in visual basic but I don't know how to deal it to my problem.
View 2 RepliesI am getting a conversion type error on the red line?
Private Function GetGap() As Integer
Dim VowelNumG As Integer
Dm Vowels as string = "AEIOU"
Dim VowelIndexG as integer
For VowelIndexG = RandomStr.Length - 1 To 0 Step -1
[Code] .....
I have an unbound datagrid of which I load a csv into it.I then add an additional column and populare it with row numbers:
Private Function AutoNumberedTable(ByVal SourceTable As DataTable) As DataTable
Dim ResultTable As New DataTable()
Dim AutoNumberColumn As New DataColumn()
[code]....
I then add to my datagrid :
datagrid1.DataSource = AutoNumberedTable(ds.Tables(strFileName))
I then try to update my sql table:
My insert paramater:
insertCONTACTS.Parameters.Add("@Company_ID", SqlDbType.Int, "Company_ID")
My add row:
row("Company_ID") = datagrid1.Rows(r).Cells("Company_ID").Value
But I get the above error, I thought when i added the column, the values in the rows were integer.How can I convert my column to integer.
I am doing a project entitled "Automation of Student admission process".I am having a datafield UGPercent of datatype(18,3) NULL in my database.When i tried to insert it using the following code Insert into Markdetail(UGPercent)values(" & txtperc2.Text & ")..It shows me the error:conversion from string to double is not valid.what is wrong in my code?
here: Markdetail is my table
txtperc2.Text-The textbox used to get the UG percentage.
I 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.
I designed a payroll application and I keep getting the error conversion from string to type Integer is not valid.Also when I enter the name in one of the textboxes it reads form and not my name.[code]
View 2 RepliesI have the following code, where I want to use data from the database in an if statement, however it doesnt work, the error of conversion of string to boolean appears.
If "Staff.Welcome.Text = 1" Then
WelcomeRead = True
End If
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")
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
I want to connect to the proxy server using with the webbrowser while reads the strings of the proxy username, password, ip and the ports in each textbox.ere it is the
Imports System.Net
Imports System.IO
Public Class Form1
[code]....
The error is: Conversion failed when converting date and/or time from character string.Basically I'm trying to make it so that when someone clicks a location in a list box it increments the correct field in a Stats table by 1 to say that they clicked the location. I've been trying to solve this for a while now and can't get anywhere. My date is in date format, and so is the Date field in my Stats table. My code can be seen below.
Dim Current As String
Dim Check As String
Dim objCmd2 As Object
[code]....
The issue comes in with the second SQL statement I think. I don't understand why adding a date into a date field would be an issue, I've tried adding it as a string which didn't work.
Dim i as integer
For i = 0 to 365
sqlinsert.InsertCommand="insert into cashdate (date) values (getdate()+'" & i & "')"[code]....
getdate is a function in the database that returns the datetime of now i have an error that says conversion failed when converting date or time from character string .what to do now ??
i have 2 textbox's 1 button and im trying to convert the text in one textbox(decimal) to show a hex value in the other textbox via the button click event
View 3 Repliesthere is one search button to see the report on datagridview using year..so when the more items are there in database correspond it year(say 2012)... the above exception is thrown by filling the datgridview,the problem happens when it tries to connect with crystal report,it shows error...Remember that i face this problem only if there are more records in my database(exactly more than 100 rows)...when i delete few rows from the database,it works fine..I have created a table and added that table to a dataset,then assigned that table1 as datasource for crystal report
[Code]...
there is one search button to see the report on datagridview using year..so when the more items are there in database correspond it year(say 2012)... the above exception is thrown by filling the datgridview,the problem happens when it tries to connect with crystal report,it shows error...Remember that i face this problem only if there are more records in my database(exactly more than 100 rows)...when i delete few rows from the database,it works fine..I have created a table and added that table to a dataset,then assigned that table1 as datasource for crystal report
Public Class crystalform1
Dim r As DataRow
Dim t As DataTable
[code]....
I write a program to convert Decimal numbers to Binary numbers. It is working well. But I want to control the bits. i.e - We can write 31 as a) 11111 or b) 011111. When I run my program it displays 11111. I want to take input bit from a text box and display it like 0011111 or 011111 or what ever bit I input. How can I do that ?
Private Sub DecToBin()
Dim i As Integer = txtDec.Text
Dim binary As String = Convert.ToString(i, 2)
txtBin.Text = binary
End Sub
I'm writing a small program that will convert a negative number (e.g. -200) to a hexadecimal number (e.g. FF38). And back to a decimal number. FF38 back to -200. (I can only use two bytes when converting back and forth.)
Question: is there a function in VB that will help?
i have a problem with my code: [code] At the bold part, when i goto debug my program i get the error "Conversion from string "TrueFalse" to type 'Boolean' is not valid."
View 3 Repliesi have the decimal 0,22727272727272727272727272727273 and i like to convert it to hour, minute, second, the zero represent hour.
View 6 RepliesSo, yes, I've tried with these three formats, and the problem remains the same:I have a string, "s"For Each s As String In stringarray and this array is recieving data from a streamreader that is reading a csv file. The data I'm having dificulty reading are these very specific numbers(yes, only these numbers, because phone numbers get home safe and sound).The numbers I'm talking about are usually decimal.ValueList.Add(Convert.ToDecimal(s))
Now, when I convert them like that, they always bring a "D" alongside with them. I've personally checked the string multiple times, and it just has a "1", and somehow, my list recieves "1D" as a number, same thing happens with decimal numbers(0.29D for example). I've tried with Doubles and Integers, the result is the same.
