[2005] Null Pointer Exception Help

[jeffnyc]

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

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

[nmadd]

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

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.

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

[jeffnyc]

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.

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

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