Invalid Conversion Error?
May 25, 2011I recently upgraded a VB 6 project to .net. I'm having a problem with this block of code:
Dim CtrlName As System.Windows.Forms.MenuItem
For Each CtrlName In Form1.Controls
'Some code here
[code].....
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Error - Conversion From String "10:1:1" To Double Type Is Invalid
Oct 11, 2011iam passing a textbox value(the value is 10:1:1) into a string and when iam running the application iam getting the following error "coversion from string "10:1:1" to double type is invalid". kindly find the code below and help me on the same: (also the textbox values should be greater than 0 always)
Dim strEncrypt As String = txtData.Text
If strEncrypt > 0 Then // I am getting the error here
txtEncryptedData.Text = Encrypt(strEncrypt)
Else
[code]....
Cell Datagridview Blank - Error Appear "conversion ">=" DBNULL To String "" Invalid"?
Jan 13, 2010the code bellow for preview/print .it ok but when i leave the first row ...don't care which cell is blank.The Error was appear"conversion "> =" DBNULL to string "" invalid"IF the cell at the first rows is not blank .i can print that data[code].....
View 4 RepliesDataGridView Conversion From DBNULL Invalid?
Oct 8, 2009Attempting to load datagridview and getting error Conversion from type DBNULL to type Date is not valid.SQL Field type is datetime but is sometimes NULL. When displaying records in grid, I need the NULLS to display as blanks and not 1/1/1900. I also need the dates to display in user's windows regional setting format.
View 2 RepliesDatetime Format Conversion Invalid String
May 9, 2012I have asked this question before and used the soln but for some reason it just does not work this time around. Hopefully someone else can see the error/missing element. Iparse a date that is in string format and would like to convert it to a datetime format but cannot figure out how to do this. The date appears as such:
[Code]....
DB Null - Conversion From DBNull To Single Is Invalid
May 19, 2010Pulling a record from the DB and populating a list view but keep getting conversion from DBNull to Single is invalid (words to that effect). The code is below with bold highlighting where problem is and a bit more helpful description of error. I get this error: "Conversion from type 'DBNull' to type 'Single' is not valid." [Code]
View 17 RepliesVS 2010 : Conversion From String To Double Is Invalid?
Jul 25, 2011I have written this code and tried running it but I am getting errors in the code segments below. The error says "conversion from string to double is invalid". whereas the calculation for 'y' is an addition so should not be giving the value it is giving at the moment. ICCPtotcircuitres is also returning 'nothing'.
Private Function iccptotcircuitres(ByVal x As String, ByVal y As String, ByVal z As String) As String
Dim Res As String
Res = x + y + z
iccptotcircuitres = Res
[code]....
Get An Invalid Cast Exception - Conversion From String To Double Not Allowed?
Apr 27, 2010I get an Invalid Cast Exception - Conversion from string to double not allowed. I don't know what to do.
Option
Strict
On[code]......
Conversion Error On Line 5 Stating 'Conversion From String 'S' To Type 'Double' Is Not Valid
Apr 8, 2009a 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 RepliesConversion From String "" To Type Double Is Invalid
Dec 4, 2011The project is to use a transaction to update something. Since I run a dnd game I used it to update levels of a character. Selecting the character works perfectly fine. Validation of the level works fine. Actually trying to update it gives me the error "Error: conversion from string "" to type Double is invalid". This is getting frustrating because I cannot find the involved string nor do I have a double anywhere in the PROJECT let alone in the code.I have tried adding a global variable to the transaction form to set the level for update in the update statement, changing the level type and that's about all I could think of. I don't know where to begin looking for the error's source unfortunately. [code]
View 7 RepliesInvalid Argument Error?
Apr 19, 2010Private Sub lVW_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LVW.Click
With LVW 'LVW=ListVew Name
LVW.Text = .SelectedItems.Item(0).Text
[code].....
Compile Error Invalid Qualifier
Mar 2, 2010i am using vb6 and sql express. came to this error when i press the update button it says "compile error invalid qualifier". the error is at " live.tostring("dd/mm/yy") "
private Sub cmd_update_Click()
Dim conn As New ADODB.Connection 'ADODB Connection Object
Dim recset As New ADODB.Recordset 'Recordset Object
Dim sql As String ' String variable to store sql command
[code]....
Error 481 Invalid Picture In Using Vb6 App In Win7
Jun 11, 2010I've had developing an old vb6 (sp6) app in my pc with winxp and running it in other with win7.
View 1 RepliesRun-time Error 94 Invalid Use Of Null
Apr 16, 2009Run-time error 94 invalid use of Null
View 16 RepliesRuntime Error '380':Invalid Property Value
May 2, 2006A VB5 program I wrote years ago stopped working and is now giving me this error:
Run-time error '380':Invalid property value
I cannot figure out what has changed, since I run that program almost daily. It was working fine, then stopped (without any changes to the program). I suspect I may have uninstalled something it uses, but cannot figure out what.When I open the VB5 IDE, I get an error saying:
'c:program filesdevstudiovbComct232.ocx' could not be loaded--Continue Loading Project?
If I say no, it does not load and I cannot see the source code.If I say yes, it does load and I can see the source code but I get weird compiler errors.
Sporadic 'INVALID CONTEXT ERROR'
May 11, 2010Has anyone ever received an "INVALID CONTEXT ERROR" while running a threaded VB.NET 2.0 application? We seem to be getting this error very sporadically, but can't seem to determine the root cause.
View 1 RepliesVS 2008 : Error : Invalid Dn Syntax
Oct 13, 2009Trying to run the following
treeval = e.Node.Text
Dim strVal As String = New String("LDAP://10.22.67.21:389/OU=Linkway,OU=Desktops,OU=Devices,DC=domain,DC=suffix")
Dim domain As New DirectoryEntry(strVal & "'DOMAINusername', 'password'")
[code]....
I get an error saying "Invalid dn syntax"
Card Game - "Invalid Cast Exception Was Unhandled" "Conversion From String "" To Type 'Double' Is Not Valid
Aug 12, 2010I'm trying to make a card game where the user chooses either Clubs, Hearts, Spades, Diamonds or Joker and then the computer randomly chooses a card to counter and then depending on the formula of what beats what the scores are tallied.
Here is the:
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[CODE]...
Now I pick a card and the computer picks a card and it displays the winner but then immediately it sends me to the coding highlighting lblcomp.text += Val(0.5,1, or 4) saying "Invalid Cast Exception was Unhandled" "Conversion from string "" to type 'Double' is not valid.
Asp.net - Error : Hexadecimal Value 0x1F, Is An Invalid Character
Jun 25, 2012I am getting the following error:
' ', hexadecimal value 0x1F, is an invalid character
Here is my function. I get this error when it hits "reader.MoveToContent()" for the first time. Can anyone point me in the right direction?
Public Function GetSyndicationFeedData(ByVal urlFeedLocation As String) As SyndicationFeed
Dim settings As New XmlReaderSettings() With { _
.IgnoreWhitespace = True, _
[code]....
Decryption Error : Padding Is Invalid And Cannot Be Removed
Apr 23, 2010I have been writing a security class in my application, I am able to encrypt the string correctly and without error. However every time when I try to decrypt this string again, i get an error with this as it returns the following Padding is invalid and cannot be removed.
Here is the code:
Public Function DecryptKey(ByVal plainText As SecureString, ByVal key() As Byte, ByVal iv() As Byte) As SecureString
Try
[CODE]...
And it provides a stack trace with:
at System.Security.Cryptography.RijndaelManagedTransform.DecryptData(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount, Byte[]& outputBuffer, Int32 outputOffset, PaddingMode paddingMode, Boolean fLast)
[CODE]...
I have found simular issues on web, and most of them say that the IV is not the same the encrypted version, but I can confirm that the IV is the same as they both access the exact same variable.
Decryption Error : Padding Is Invalid And Cannot Be Removed?
Jul 13, 2011decryption error : Padding is invalid and cannot be removed.
View 1 RepliesError : Invalid Cast Exception Was Unhandled
Aug 15, 2011I am getting Invalid Cast Exception was unhandled.Conversion from String 'abc' to type 'Double' is not valid in the following line!
If
((xlBook.Worksheets(2).Cells(iRowIndex, iColumnIndex).Value)) = avFoundKeywordds(iSearchText)
Then
The business intent is that user enters the keyword 'abc' and clicks search button . We have defined different keywords in a xls which has 1600 rows and 16 columns . so when finding abc in any of the cells ,it has to return the value of a column#4 where the name is specified !
Error Cross Thread Called Invalid.txt
Apr 7, 2012Cross Thread Calld Invalid.txt?
View 1 RepliesError Is: Invalid Operation Exception Was Unhandled
Feb 6, 2010i have a datagridview that show an access database also there is toolstrip menu i defined the datasource and everything is fine except that when i run the application and edit anything and when i press the save button on the toolstrip an error appear and highlight this: Me.TableAdapterManager.UpdateAll(Me.My_phone_numbersDataSet)
and the error is: invalid operation exception was unhandled
Old Format Or Invalid Type Library Error In .net
Jan 9, 2008Iam getting an error "Old format or invalid type library" when im running the .net application in systems(pc) having MS Office 2000 versions.and im not getting any errors for higher versions like 2002,2003 etc.This error im getting when exporting to Excel.And i tried the following link [URL] Then also im getting same error.
View 5 RepliesRijndaelManaged - Error: Padding Is Invalid And Cannot Be Removed
Mar 19, 2012I am using RijndaelManaged to encrypt just 4 bytes of data which produces a 16 byte result (i am using a 128 block size). When I try to decrypt these 16 bytes I get the message "Padding is invalid and cannot be removed.". (The base stream of the CryptoStream is a MemoryStream based on just these 16 bytes).
View 1 RepliesRun-time Error 30005: Invalid Argument Value?
Jul 25, 2008hi,i am having a VB application in my system, which runs with absolutely no issues. But when i am running that EXE in some different machine i am randomly getiing a run-time error for a particular form.The error is like :Run-time error '30005': Invalid Argument valueThat particular form have MSFlexGrid and List box.As i cant simulate the same in my own setup, could u pls suggest the possible reasons?
View 2 RepliesVS 2008 COM Exception Error: Invalid Parameter
Dec 10, 2009I am running the same program on two workstations. One reveals no errors while the other shows a "COM exception error: invalid parameter." The offending line of code is shown below.Is there an explanation for the inconsistency?
.SeriesCollection(iRet).Name = "=""Q" & Str(iRet) & """"
Asp.net - .net Function Giving ORA-00911 Invalid Character Error
Sep 12, 2011Public Shared Function GetData(ByVal id As Integer) As List(Of SomeClass)
Dim command As New OracleCommand
Dim conn As New OracleConnection(WebConfigurationManager.ConnectionStrings("ConnectionString").ToString)
Dim param As New OracleParameter
[code]....
This function is giving an ORA-00911 invalid character error. I have other methods of the same style and these are functioning correctly.
DATASET - Whenever Try To Access - Shows Error Of Invalid Password
Jun 5, 2011I am having a small problem with dataset. problem defination is:
System.Data.OleDb.OleDbException was unhandled
ErrorCode=-2147217843
Message="Not a valid password."
Source="Microsoft JET Database Engine"
And My connecting string is:
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source="D:Shop InventorydatabaseDATABASE.mdb";Persist Security Info=True;Jet OLEDB:Database Password=123456789"
WHERE the password I added is rightbut whenever I try to access is it shows error of Invalid Password;
I have coded it as:
'Me.SaleTableAdapter.Fill(Me.DATABASEDataSet.Sale)
Me.ReportViewer1.RefreshReport()