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TryingHard
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Q:
(2008 Visual Basic) I need help with an error in my code
Visual Basic, Web development, Debugging, Visual Basic 2008, innerText, System.NullReferenceException, Visual Basic 2008 debugging
1.Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click

2.For Each Link As HtmlElement In WebBrowser1.Document.Links

3.Dim strText As String = Link.InnerText

4.If strText.IndexOf("Heal") > 0 Then

5.Link.InvokeMember("Click")

6.Exit Sub

7.End If

8.Next

9.End Sub


-here is my error i received in line 4. when trying to run my code.

System.NullReferenceException was unhandled Message="Object reference not set to an instance of an object."


what am i doing wrong? does anyone see anything that's not right?

additional info:
my code is set to click on a link button on a web page. the inner text changes after the word "heal" so i'm finding it difficult to find a solution to my code. I need some professional guidance.

thank you for your time and help.
ASKED: Nov 29 2008  4:51 PM GMT
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Jlees
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It looks like Link.Innertext might be "Null" when you assign it to strText in one of the loops in the for/each.

You might try running the code in Visual Studio with a break point before and after the error and the assignment so you can watch the values.

This error is often because the code has used a reference to a object before it is assigned or initialized. I see where you've initialized it, but you might also try breaking it into two lines.
Last Answered: Mar 27 2009  2:36 PM GMT by Jlees   5320 pts.
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IT Knowledge Exchange Community Update for 12/02/08 - ITKE Community Blog   0 pts.  |   Dec 2 2008  6:00PM GMT

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