<div>
That was the problem. Thanx a lot.
</div>


<div>
<div class="content wysiwyg-content">
Hy<br />
<br />
This is a part from my code:<br />
<br />
For ci = 0 To ListBox2.Items.Count<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; If TextBox7.Text = ListBox2.Items.Item(ci) Then<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; GoTo Same_ID<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; End If<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Next<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ListBox2.Items.Add(TextBox<wbr />7.Text)<br />
<br />
when it arrives at : &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ListBox2.Items.Add(TextBox<wbr />7.Text)<br />
<br />
it gives me this error:<br />
<br />
An unhandled exception of type 'System.ArgumentOutOfRange<wbr />Exception'<wbr /> occurred in system.windows.forms.dll<br />
Additional information: Specified argument was out of the range of valid values.<br />
<br />
What should i do??
</div>
</div>


Hy

This is a part from my code:

For ci = 0 To ListBox2.Items.Count
                If TextBox7.Text = ListBox2.Items.Item(ci) Then
                    GoTo Same_ID
                End If
            Next
            ListBox2.Items.Add(TextBox7.Text)

when it arrives at :            ListBox2.Items.Add(TextBox7.Text)

it gives me this error:

An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in system.windows.forms.dll
Additional information: Specified argument was out of the range of valid values.

What should i do??

I get an error when i try to add new item to a listbox.

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,