I have the following
Private Sub holidaysaveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles holidaysaveButton.Click
For Each dr As DataGridViewRow In DataGridView1.Rows
[code].....
Dim today As System.DateTime
today = System.DateTime.Now
Dim strDate As String = today.ToString("d")
[Code].....
The error occurs on the line If wba.Selected = "MARKETING CODE" Then.
[Code]...
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]....
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 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]......
Private 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
i'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
See 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.
im 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
I 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.
When 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 RepliesAm 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:
i 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..
If I try to put a string into a Boolean variable such as this:
Dim testValue As String = "True"
Dim bool1 As Boolean = testValue
With Option Strict On I get an error and the suggested fix is to change the second line to:
Dim bool1 As Boolean = CBool(testValue)
This is fine, But - what are the advantages / disadvantages of doing this instead:
Dim bool1 As Boolean = Boolean.Parse(testValue)
I'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]...
I encountered due to a coding error a behaviour I can't explain.In one line I have an implcit conversion from a string to a boolean value:
Class myClass
Public Property myString() as Boolean
Return "123" '<= Implicit Conversion occurs here
End Property
End class
[Code]...
Are there any differences in the behaviour between the .NET Versions?The code is compiled against .NET 2.0 with implicit conversion on.
I fill a DataGridView with the result of a database query. I have a boolean field named Gender. I want to show "Masc"if it value is True or "Fem" if it's False.
I can't assign a string value to a bool type cell. How can I do this?
PS: I've seen a C# example, but I can't understand how to do this in VB.
I currently have the following GridView TemplateField:
[Code]...
From what I read it is a good convention to name a method that returns a boolean value with the prefix of "is" or "has". So in keeping with this convention I am trying to name a method in my program with this prefix but I am running Specifically I have a class called Day. It is a simple class with a few data members and one method that returns a boolean value of true or false. The name of the boolean variable is isSpecialDay. This class has a method called isSpecialDay which takes the date of the day, applies some criteria to the date and then sets the variable isSpecialDay to true or false. My problem is that the boolean variable is named isSpecialDay and so it the method. What should I do?
Public Class Day
Private TheDate as String
Private DayName as String
[code].....
Is there are any way to convert boolean type into "ON"/"OFF" using string formatter
Like:
Dim inpValue as Boolean
Dim outValue = String.Format("0:ON;OFF", inpValue)
' should show OFF as output
I cannot use code or IFormatProvider
Imports System
Imports System.Data
Imports System.Data.SqlClient[code]....
How can I create a function from this example:
Private Function CheckForNull(fieldvalue as string) as Boolean
That checks that all my fields are not empty? For example, say I have three fields txtFirstName, txtLastName, and txtAddress. How would I write the function above that would check that these fields were not left empty?
So I had a smart idea to make a dictionary with all my variables so I could save them easily in chunks. This includes String, Boolean and Integers. When I was in Framework 3.5 I only had a few warnings about stuff that I didn't have coded in, but now in Framework 4 I am maxing out all my warnings with Implicit conversions. Personally I don't want to go to every number and put quotes around it put quotes around "True" because then it may change the method.
Public Function loadGeneral(ByVal fName As String) As Boolean
Dim tempDict As New Dictionary(Of String, String)
For Each kvp As KeyValuePair(Of String, String) In GeneralSettings
Dim v1 As String = kvp.Key
Dim v2 As String = QuizZing.My.Settings.GetSetting(fName, v1)
[Code] .....
I 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 have a checkbox called Yes on my datagridview. On my datagridview, I have three records and each has the checkbox "Yes" which are unchecked and the values are saved as Null in the table in the database. Now, when I check one of the Yes checkboxes and call the save function. I receive the error - Conversion of "DBNull" to "Boolean" is not valid.
The code is as shown below;
For irow = 0 To DgvReturns.Rows.Count - 1
query = "UPDATE dbo.tblProjectPatients SET Yes ='" & _
CBool(DgvReturns.Rows(irow).Cells(2).Value) & "'where ProjectID = " & _
[code]....
Now, the problem is because there are other two records with values as DBNull on the datagridview i.e.., (it cant update it to the database, hence the unhandledexception).Therefore, can in the update statement state that if the Yes checkbox is not checked to be saved as False to the database.
I have a HTTP class that gets content from URL's, POST's content to URL's etc and then returns the raw HTML content.In the function inside of the class it detects if there is a HTTP error and if so I would like to return false but will this work if I have declared the function to return a String?
Code Sample of what I am trying to do (Note the Return Content & Return False if a HTTP error code is detected)Public Function Get_URL(ByVal URL As String) As String
[Code]...
We know that VB string start and end with double quotes " "
So we have to use "" if we want " in VB string.
I wonder if there is a regular expression pattern which will match VB string?.
After Filling a DataTable in GridView's DataSource . A column with check box Type appears but it created as read only column and I can't enable it or make it editable... even i tried .readonly = false and still can't be edited
View 1 RepliesIn my ASP.Net Web-Application, I'm getting this error: Conversion from type 'DBNull' to type 'Boolean' is not valid.
[Code]...
