[2005] Null Pointer Exception Help

Code:

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For row = 0 To 3
    For col = 0 To 4
          Dim curLabel As New Label
          curLabel = Me.TableLayoutPanel1.GetControlFromPosition(row, col)
          With curLabel
              If sourceIndex >= sourceArray.Length Then
                    .Text = sourceArray(sourceIndex)
                    .Font = My.Settings.myFont
                    .ForeColor = My.Settings.myForeColor
                    .BackColor = My.Settings.myBackColor
                End If
            End With
            sourceIndex = sourceIndex + 1
    Next
Next

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I believe sourceArray(sourceIndex) does contain text but that is the line I am getting the NullPointerException?

Quote:

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Originally Posted by jeffnyc

I believe sourceArray(sourceIndex) does contain text but that is the line I am getting the NullPointerException?

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That's definitely not good enough. Step through the code and actually see what sourceArray contains at that point.


My guess is that your Array definition looks something like this and this is causing the exception.

VB.NET Code:

Dim sourceArray() As String

If you are going to dynamically add items to a collection like that, then use a Generic List instead: http://msdn2.microsoft.com/en-us/lib...19(vs.80).aspx

Quote:

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Originally Posted by nmadd

That's definitely not good enough. Step through the code and actually see what sourceArray contains at that point.


My guess is that your Array definition looks something like this and this is causing the exception.

VB.NET Code:

Dim sourceArray() As String

If you are going to dynamically add items to a collection like that, then use a Generic List instead: http://msdn2.microsoft.com/en-us/lib...19(vs.80).aspx

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I dim the array as object type. Also, I need to specify col before row.