InvalidArgument=Value of '1' is not valid for 'index'.

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<pre lang="vb"><pre lang="vb">Dim ans As Double 
For z As Integer = 0 To ListBox1.Items.Count
            ans = Math.Sqrt((ListBox1.Items(z) - ListBox3.Items(z)) ^ 2 + Convert.ToInt32(ListBox2.Items(z) - ListBox4.Items(z)) ^ 2)

            ListBox5.Items.Add(ans)&lt;/pre&gt;</pre>

i try it, but error like this.
InvalidArgument=Value of '1' is not valid for 'index'.
anyone could help me?

Posted 12-Nov-13 20:12pm

Member 10318370

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Sergey Alexandrovich Kryukov 13-Nov-13 2:15am

Where?
—SA

Thava Rajan 13-Nov-13 2:41am

Where is error raise? are you sure the error is raise in one of the line you given

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F. Xaver · Answer 1 · 2013-11-12T23:07:00

Solution 1

use This ;)

VB

For z As Integer = 0 To ListBox1.Items.Count -1

Items is zero based ..

count returns 1 .. means there is only the item index 0
but you loop again through it with index 1 ..this is where you get your error
because there is no item(1)!

greets

Posted 12-Nov-13 23:07pm

F. Xaver

Updated 12-Nov-13 23:08pm

v2