Conversion From String To Type Boolean Is Not Valid
Oct 24, 2011The error occurs on the line If wba.Selected = "MARKETING CODE" Then.
[Code]...
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VS 2005 Error Conversion From String Name To Type Boolean Is Not Valid?
Sep 7, 2010I 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]....
VS 2008 Goto Debug Program Get Error 'Conversion From String' To Type 'Boolean' Is Not Valid
Jan 27, 2010i 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 RepliesERROR: Conversion From String "Settings" To Type 'Boolean' Is Not Valid?
Feb 10, 2009i want to save the settings of the checboxes so next startup it will take the settings how they were put in. But it gives an error when i am opening the "Settings tab" : Conversion from string "Settings" to type 'Boolean' is not valid.
Ill post my code here:
Private Sub Settings1234hide_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
CheckBox1.Checked = My.Settings.MyBool
[Code]......
Conversion From String "Username" To Type 'Boolean' Is Not Valid?
Sep 6, 2009Private Sub ConvertLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ConvertLabel.Click
If UserBox.Text = String.Empty Or "Username" Then
[Code]....
Runtime I get this error:
Conversion from string "Username" to type 'Boolean' is not valid.
on the line
If UserBox.Text = String.Empty Or "Username" Then
Error : Conversion From String "" To Type 'Boolean' Is Not Valid
Sep 7, 2011i'm getting error like this An error occurred creating the form. See Exception.InnerException for details. The error is: Conversion from string "" to type 'Boolean' is not valid.
my code was
If UsernameTextBox.Text = 1 And PasswordTextBox.Text = 1 Then
PIF.Show()
End If
mithila.s
VS 2008 Conversion From String "" To Type 'Boolean' Is Not Valid
Apr 14, 2010See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.InvalidCastException: Conversion from string "" to type 'Boolean' is not valid. ---> System.FormatException: Input string was not in a correct format.
at Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat)
[Code]....
When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.
VS 2008 Conversion From String "i" To Type 'Boolean' Is Not Valid
Jun 3, 2009im in the mists of making a hangman game and i almost done and i just stumbled upon a error here is all the code
Public Module Module1
Public letter1 As String
Public letter2 As String
[Code].....
i get the error in the title on the bold underlined text after i input a letter thats not in the word
Conversion From String "---" To Type 'Boolean' Is Not Valid
Oct 9, 2010I wrote this block of code below 'Once all the score zones have been double clicked, the game is over
If Me.LabelOnes.Text <> "" And LabelTwos.Text <> "" And _
LabelThrees.Text <> "" And LabelFours.Text <> "" And _
LabelFives.Text <> "" And LabelSixes.Text <> "" And _
[code]....
I get this runtime error message after only one of the score zones has been filled
Conversion from string "---" to type 'Boolean' is not valid.
Conversion From String "Key" To Type 'Boolean' Is Not Valid
Mar 18, 2010When I run the following code If DropDownListKey.SelectedValue = "Card" Or "Key" Then I get an error message as follows: Conversion from string "Key" to type 'Boolean' is not valid. I can't figure out why I would get this error if I was just checking the value of the dropdownlist control.
View 5 RepliesConversion From Type 'DBNull' To Type 'Boolean' Is Not Valid
Jun 5, 2011i have code below...but i cannot run because this error..."Conversion from type 'DBNull' to type 'Boolean' is not valid."
CheckBox1.Checked = DataGridView2.CurrentRow.Cells(10).Value
CheckBox2.Checked = DataGridView2.CurrentRow.Cells(11).Value
CheckBox3.Checked = DataGridView2.CurrentRow.Cells(12).Value
CheckBox4.Checked = DataGridView2.CurrentRow.Cells(13).Value
CheckBox5.Checked = DataGridView2.CurrentRow.Cells(14).Value
how i have to set in my table to insert input 1 or 0..
DatagridView Checkbox Error - "Conversion From String "" To Type 'Boolean' Is Not Valid"
Mar 1, 2010Am using vb.net 2008 and sql2008 and I want to loop thru frmMovement.DataGridView1 and the checked rows shd get populated into frmMovementReceivedFiles.DataGridView2. But I used Cbool, Boolean.TryParse to convert the the checked value but I still get but still the error: "Conversion from string "" to type 'Boolean' is not valid"
The code is as follows. Or ss there anyway to loop thru the checkboxes and populate them in another DatagridView2?
CODE:
It Says "Conversion From Type 'DBNull' To Type 'Boolean' Is Not Valid."_String?
Jun 9, 2011Imports System
Imports System.Data
Imports System.Data.SqlClient[code]....
Conversion From String To Type 'Boolean'
Apr 7, 2010I've got a routine that checks a website my my external address. What I'd like to do is loop through the string just to get the first 15 numbers and full stops (periods). But that isn't my question, my problem is I've got this routine that isn't building because of a string conversion issue. I don't know how to correct it.
[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 RepliesDB/Reporting :: Conversion From Type DBnull To Type String Is Not Valid When Inserting A Record
Mar 22, 2010I'm trying to add a new record to my database but i keep getting the message - "conversion from type DBnull to type string is not valid". I think its something to do with the Employee ID when VB attempts to save it to the database my code is below
Imports System.Data.OleDb
Public Class Add
Private Sub DisplayRow()
[Code]....
Error: Microsoft.VisualBasic: Conversion From Type 'DataRowView' To Type 'String' Is Not Valid
May 25, 2011I now have SQL Parameters set up and I'm using them to save/delete/add my data. This all works well, except when it's trying to save a combobox to the datatable it appears with the error above.Majority of my comboboxes have datasources, and the valuemembers of these are the actual list items, not the ID's of the list items.I'm not sure why this error could be happening, I'm fairly sure I've connected everything to the binding source correctly; I've checked it a few times.Does anybody know what the cause of this could be? I've looked around a bit and I haven't found much
View 7 RepliesIDE :: System.InvalidCastException: Conversion From Type 'DBNull' To Type 'String' Is Not Valid
May 16, 2007I 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:
VS 2008 : Error: Conversion From Type 'DBNull' To Type 'String' Is Not Valid
Jun 15, 2009how can I solve this error without having to fill all of my fields. Some of the fields in my database are Nulls and some have records.
Error: Conversion from type 'DBNull' to type 'String' is not valid.
Error : Conversion From Type 'DataGridViewTextBoxCell' To Type 'String' Is Not Valid
May 2, 2010I am getting the error "Conversion from type 'DataGridViewTextBoxCell' to type 'String' is not valid." When trying to display a cell from DGV in a listbox.I have my variable for the cell reference as follows:
Dim a As Object
a = DataGridView1(4,1)
To insert it in the listbox as follows:
lstLetter.Items.Add(String.Format(a))
I tried:
lstLetter.Items.Add(a)
This will not actually display the entry inside the referenced cell, it shows this in my listbox instead:
DataGridView TextBoxCell { ColumnIndex=4, RowIndex=1 }
how I need to convert this to display.
Error: Conversion From Type DBNull To Type String Is Not Valid
Jul 29, 2011I 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()
$Dim cd as new oledb.oledbcommand("Select Quantity from tlist where tool_name"& "'"listbox2.selecteditem & "'" & "", con)
[Code]....
Here i got the error as "Conversion from type DBNull to type string is not valid"
Error:Conversion From Type 'DBNull' To Type 'String' Is Not Valid
Dec 13, 2010I've been getting this error when pulling data from a recordset. It is coming from a null entry and as a newbie to VB2008 I'm not sure how to get around this.
here is my code lblShipping.Text = reader("CARRIERCODE")
the error:Conversion from type 'DBNull' to type 'String' is not valid. Basically what i'm attempting to accomplish is to see if there is anything in that field. If so put it into the text box if not leave it blank.
VS 2008 - Conversion From Type 'InternalField' To Type 'String' Is Not Valid
Jul 9, 2009We get this error: Conversion from type 'InternalField' to type 'String' is not valid. When we get to this in our Dim fname2 = fname args.Graphics.DrawString(fname2, New Font("arial", 8), Brushes.Black, 5, 5) fname is a nvarchar variable from a recordset. It's just a name.
View 8 RepliesVS 2008 : Conversion From Type 'DBNull' To Type 'String' Is Not Valid
Jan 20, 2010I use following codes to retrieve data from table, but get error Conversion from type 'DBNull' to type 'String' is not valid.
str = "Select * from gpass where vou_no= " & Val(Me.txtGat.Text) & " And Date = '" & Me.txtDat.Text & "'"
dt = GetTable(str)
If (dt.Rows.Count > 0) Then
[code]....
VS 2008 Conversion From Type 'DBNull' To Type 'String' Is Not Valid?
Apr 29, 2009I am importing an Excel spreadsheet, turning it into a dataset and inserting the results into SQL Server (only 100 rows).
I am having an issue with one of the date columns in Excel, which can have a value or not. The "F" column is the one that may be blank and this is the error I get: Conversion from type 'DBNull' to type 'String' is not valid.
How can I add a check to the Dim F As Date = CDate(row(5)) to handle a null?
VB
' The use of letters instead of
' more descriptive variables is
' strictly for this sample peice
[Code].....
VS 2010 Conversion From Type 'FileInfo' To Type 'String' Is Not Valid?
May 1, 2012I get the error: Conversion from type 'FileInfo' to type 'String' is not valid. This happens in between try and end try
Private Sub CopyNotes()
Dim NotesBase As String
Dim NotesTgt As String
[Code].....
VS 2010 Conversion From Type 'Range' To Type 'String' Not Valid
Aug 30, 2011I have the following code to use Words spellcheck feature on a RTB. Once you pick the correct word in the spellcheck box and press change I get the error on th efollwoing line
strResult = Left(objDoc.Content, Len(objDoc.Content) - 1)
I tried to use CType() but still complains.
If (Len(t.Text) = 0) Then
'nahhhhhhhhhhh
Else
[Code]....
"Conversion From Type 'DBNull' To Type 'Boolean' Is Not Valid" After Checking That It's Not DBNull
Jan 18, 2012In my ASP.Net Web-Application, I'm getting this error: Conversion from type 'DBNull' to type 'Boolean' is not valid.
[Code]...
'Conversion From Type 'DBNull' To Type 'String' Is Not Valid
Aug 19, 2009At run time my application gives an error of "Conversion from type "DBNull" to type "String" is not valid. In my form only one field - Add_info is an optional field which might be filled or not by the user. Before, I had an error when an apostrophe was used so i updated the code as highlighted below. This in return removed the apostrophe error but generated an error whenever there is an empty additional field. [code]
View 1 RepliesConversion From Type 'DataTable' To Type 'String' Is Not Valid
Aug 9, 2011i encounter this error while passing a string as datatable.
I populate combobox1 with tables/sheets from excel and each table has datarows which i want to get the data and import to sql corresponding table, so, I declare
Dim XLSTableName as String = Combobox1.SelectedItem
And I encounter the this error : Conversion from type 'DataTable' to type 'String' is not valid
how do i return the combobox1.SelectedItem as Datatable cos if i declare
Dim XLSTableName as DataTable and pass it to the select Command thus:
Dim objCmdSelect As New OleDbCommand("SELECT * FROM [" & XLSTableName & "], ODBConn)
to obtain the dataRows I got the following error: operator '&' is not defined for types 'String' and System.Data.DataTable'