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Dim index As Integer index = listbox1.SelectedIndex listbox1.Items.RemoveAt(index) The above code is used to remove the seleceted item from a listbox. However the program crashes when the button is clicked and no item is selected. How can I correct??
Check the value of SelectedIndex before you use it. SelectedItem will be -1 if there is nothing selected. You might also want to check to see if the number of Items in the Items collection (see it's Count property?) is greater than zero before you try to remove something from it.
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Dim index As Integer index = listbox1.SelectedIndex listbox1.Items.RemoveAt(index) The above code is used to remove the seleceted item from a listbox. However the program crashes when the button is clicked and no item is selected. How can I correct??
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Dim index As Integer index = listbox1.SelectedIndex listbox1.Items.RemoveAt(index) The above code is used to remove the seleceted item from a listbox. However the program crashes when the button is clicked and no item is selected. How can I correct??
As the other posters above have stated, SelectedIndex will return -1 if there is nothing selected, so all you have to do is write an IF statement around it.
Dim index As Integer index = listbox1.SelectedIndex If index > -1 Then listbox1.Items.RemoveAt(index) -
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