I get the correct numbers out of the variable(in this case 11) but i cannot compare it bcuz i get this error. both values are int, cannot seem to find the problem.
Dim id = CInt(Request.QueryString("id"))
Dim uk = From hj In dc.Orders _
Where hj.UserID = id _
Select hj
I am using .ToString("#,##0.00") to format a number. I'm sure I have used this before but today it doesn't work.I want to format a System.Double value from the datatable like this 12345.6789 to 12,345.68
Code:
myString = dt.Rows(i)("column_name").ToString("#,##0.00")
gives a System.InvalidCastException:Conversion from string "#,##0.00" to type 'Integer' is not valid.
I have these errors when creating my website?
Error 1Server Error in '/ Application. -------------------------------------------------------------------------------- Conversion from type 'DBNull' to type 'String' is not valid. 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.InvalidCastException: Conversion from type 'DBNull' to type 'String' is not valid. Source Error: Line 64:
Line 65:
Trying to insert a record into a db, but I get the following error System.InvalidCastException: Conversion from string "Duck" to type 'Integer' is not valid. ---> System.FormatException: Input string was not in a correct format."Duck" is what I entered into a LNameTextBox.
Here is the code.
Dim myCommand As OleDbCommand = New OleDbCommand("INSERT INTO [Info] ([UIN], [Last Name], [First Name], [Department Code]) VALUES (@UINValue, @LNameValue, @FNameValue, @DeptCodeValue)", myConnection)
myCommand.Parameters.Add("@UINValue", OleDbType.Integer, UINTextBox.Text, "[UIN]")
[code]....
I can't understand why it is trying to converty the Last Name textbox entry to an integer.
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]...
why I got the following (InvalidCastException was unhandled) on the following code and how can I solve the problem.
LabelPB.Text = P - Total.Text 'Conversion from string "" to type 'Double' is not valid
Could anyone assist me in solving my problem ? My code was written in VB (VS 2003.)I got this error: System.InvalidCastException: Cast from type 'DBNull' to type 'Integer' is not valid. in my code.Here is the code line where I am getting the error: LeadCampusID = CInt(.Item("mkCampusID"))I fixed the error by making the changes in the code as :
If Not IsDBNull(.Item("mkCampusID")) Then
LeadCampusID = CInt(.Item("mkCampusID"))
Else
[code].....
I have 2 forms, frm1 and frm2. frm1 has a combobox, cboLocations and based on what selection is made here, frm2 is loaded and its combobox, cboOffices is populated. I currently have the following code on frm1:
Dim frm2 as New form(cboLocations.SelectedValue.ToString)
frm2.ShowDialog()
When running, I'm getting an InvalidCastException was unhandled...Conversion from string "System.DataDataRowView" to type 'Integer' is not valid." error.
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 RepliesI am trying to count Acad Blocks and then write the block references to the modelview using vb.net (VB 2010 Express).I have been scanning the forums for the error I am getting and before I post the code, I thought I would check and see if anyone is experienced with AutoCad and would be able to give some insight. Have not found much to do with AutoCad on the forums as of yet.I have comments on the debugging process, that might help out somewhat but I can't figure out where the first value is not being assigned (or better yet why).
View 3 RepliesI am trying to catch the System.InvalidCastException error. If I put a number into the calculator the program runs ok. If the calculate button is pressed with nothing in the text boxes I get the casting error Conversion from string "" to type 'Decimal' is not valid. I understand why I am getting the error. I don't know what to do about it. I want the program to dump null data and go back to waiting for input from the user.
Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click
Dim FedTaxRate = 0.13 ' constants for taxes and work week
[code].....
I'm programming a slideshow in Visual basic and get a SystemInvalidCastException when trying to initialize an array through a For Each loop. Here's what I'm trying to do. I have an array of Images() and another array of ImageNames(). Now I store all my images on a website, let's sa so for ease of use, I've named all my images in this manner
View 3 RepliesI'm a beginner to Visual Basic. In here I want to recreate a piggy bank which tells me how much money do I have. I created a function but the program tells me :
[Code]...
I have used the Gridview_PageIndexChanging event in asp.net.i have used the code like this:
gridFileDetails.PageIndex = e.NewPageIndex
During the run time when i clicked the next page,it generates an error:
An exception of type 'System.InvalidCastException' occurred in FFK.DLL but was not handled in user
code
Additional information: Unable to cast
object of type
'System.Web.UI.WebControls.ContentPlaceHolder'
to type
'System.Web.UI.WebControls.GridViewRow'.
in the RowCommand event,I have used the following RowCommand event:
Protected Sub gridFileDetails_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles gridFileDetails.RowCommand
Dim row As GridViewRow = CType(CType(e.CommandSource, Control).NamingContainer, GridViewRow)
[code]....
Error is Simple Application -- Error Type (A first chance exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll)
View 3 Repliesi have a program that you enter a code and your selection goes ito a richtextbox and is then added up in another as you select more items, i have run into a problem it worked a few days ago but now will not.
Dim dectotal As Decimal
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]....
I have this issue with casting....is there anyway i could pass an integer into a label...this is what i have done so far but i am getting this error "A first chance exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll"
Dim firstNumber As Integer
Dim secondNumber As Integer
Dim solution As Integer
[CODE].........................
I have a string in the format of 20100730 which i need to convert to UK format of 30/07/2010.
When i try to set 20100730 as a date it says it is not valid. Is there another way i can do this?
I have a form to calculate charges based on input data and charges stored in an array. When I try to save an entry to a file my program crashes and I get the error "Conversion from string "" to type 'Double' is not valid.
If rdoDay.Checked = True Then
Quote.DrivingHrs = txtDrivingHours.Text
Quote.WaitingCount = txtWaiting.Text
[Code].....
The error highlights the last line of the if statement beginning "Quote.TripCost" as the error, but I don't understand why..
Heres my code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim product As String
[Code]....
Its says conversion from String to Integer not valid for this line: sales = InputBox("Please Enter Your Product Sales: ")
Also, when the first messagebox comes, how can I make it when you select "cancel", the programme then exits the sub routine and a second messagebox dosent come up?
I am new to VB I get this error message "Conversion from string "" to type 'Double' is not valid. when running my app, (the underline codes are the errors), which is a basketball simulator. How can I correct this:
Private Sub playButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handle playButton.Click
Dim rank As Integer
Dim player As Integer
Dim shoots As Integer
Dim RandomGenerator As New Random
[Code] .....
i have a text box and i want to insert the textbox value to my sql procedure in server and then generate record in the datagrid view ... the parameter in sql server i declare as varchar and actua database column item datatype is nchar.. anyway in what suitable datatype that i have to put in my visual basic for the textbox in order to transfer the vlaue to sql procedure and generate result
View 7 RepliesI 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 RepliesI have the following IF Statement checking if the function GetNexstAddress (which gets the ClientID from GetClientFleetInfo(i).CLIENTID) . SECONDARYCITY
is there.
If GetNextAddress(GetClientFleetInfo(i).CLIENTID).SECONDARYCITY(0) = Nothing Then
NextAddress = " No next Destination"
Else
[Code].....
The error occurs on the line If wba.Selected = "MARKETING CODE" Then.
[Code]...
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]....
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".
View 1 RepliesI'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] .....
Imports System.Math
Public
Class Form1
'Declaration
Public
NotInheritable
Class Convert
[Code] .....
I have the below code in my app... Nothing is declared as a integer so I dont understand or see where the problem could be... It is saying:
Conversion from string "9838 Co Rd 47" to type 'Integer' is not valid.
The address is flowing through the entire function as a string the only place I think it could be getting changed somehow is in a function call... Below is the function that throws the exception. Followed by the function that returns the address.[code]...