NullReferenceException Unhandled When Looping Object

Mar 15, 2012

I got two forms.
Form 1 I ask the user a number of guest
Form 2 I ask each guest their name, their age

I decide to make a loop throught form2 array base on the number of guest but then I got this error. NullReferenceException was unhandled.

Private Sub btnBook_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnBook.Click
iTest = CInt(txtChildren.Text)
Do Until (iCounter = iTest) And (bIsNextClicked = True)
PassengersDetails(iCounter).ShowDialog()
Loop
End Sub

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Error - NullReferenceException Was Unhandled - Object Reference Not Set To An Instance Of An Object

Apr 15, 2009

I'm finishing up working on the high score list of my Jeopardy game. The only problem that I'm running into is when I try to start from scratch without a textfile in the Debug folder.I get a NullReferenceException was unhandled - Object reference not set to an instance of an object. I get this message with the line If (myPlayers.Length - 1) > 2 Then just before I start to compare the scores and reorder the list by score if necessary.I already declared myPlayers as an array of structures in the beginning of the form.

Private myPlayers() As Players

It writes the name and score to the file, but then gives me that error. My goal is to only fill the file with the three players names and their scores.I figured since the file doesn't exist, I'm doing something in that specific code that effects my reference to myPlayers but I can't figure out what exactly. I tried adding

If (myPlayers.Length - 1) > 2 AND File.Exists("highScore.txt") Then

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'read in scores, add scores to file or create new file if neccessary
If File.Exists("highScore.txt") Then
Dim InputFile As StreamReader

[code]....

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[Code]....

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[Code]...

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vb
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[Code].....

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vb Private Sub tbScan_KeyUp(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles tbScan.KeyUp

[Code]...

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[Code]...

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I have the follwing codewhich transfer the value from NumericUpDown64 to the array Conc(0,0) which is part of the structure USerInput:

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Me.FilmTableTableAdapter.Fill(Me.DVDDatabaseDataSet.FilmTable)
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[Code]...

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System.NullReferenceException was unhandled
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[Code]......

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Public Class Form1
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[Code].....

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[code].....

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HTML
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[code].....

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Additional information: Object reference not set to an instance of an object. and it points to the green one below.

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[Code].....

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[code]...

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Error occuring at line: SqlDataSource3.UpdateParameters("TechID").DefaultValue() = CInt(technicianRow("TechID"))
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[code]....

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My code

Dim pointer As Integer, index As Integer
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[CODE]...

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[code].....

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[code]...

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For b = 0 To 8
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[code]....

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