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Yes, an initialisation issue. I subclassed the listview, and in that class I had an event that referenced the 5th subitem. I was instantiating this class before I had added in the listitems and subitems - with hindsight something I should have done as part of its constructor.<br />
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Still wondering why the debugger passed over it.
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Yes, an initialisation issue. I subclassed the listview, and in that class I had an event that referenced the 5th subitem. I was instantiating this class before I had added in the listitems and subitems - with hindsight something I should have done as part of its constructor.

Still wondering why the debugger passed over it.

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I've created an application in VB.Net consisting of a couple of forms with listboxes and listviews showing lists of procedures and tables in a database. It works fine in debug mode in Visual Studio - I get no exceptions. But when I compile it and open the .exe it throws an exception when the second form opens, saying one of the parameter values is incorrect. <br />
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I have a line of code referencing the fifth subitem of a listitem in a listview:<br />
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<pre><code id="code-10-28372451-1">.SubItems(5).Text = vbNullString</code></pre>
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The error message is &quot;InvalidArgument=Value of '5' is not valid for 'index'&quot;. But there are 5 subitems in the listview so what's wrong with it?
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I've created an application in VB.Net consisting of a couple of forms with listboxes and listviews showing lists of procedures and tables in a database. It works fine in debug mode in Visual Studio - I get no exceptions. But when I compile it and open the .exe it throws an exception when the second form opens, saying one of the parameter values is incorrect. 

I have a line of code referencing the fifth subitem of a listitem in a listview:

(CODE)

The error message is "InvalidArgument=Value of '5' is not valid for 'index'". But there are 5 subitems in the listview so what's wrong with it?

Exception occurs launching .exe but no problem in IDE

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,