https://bugzilla.novell.com/show_bug.cgi?id=465422
Summary: Exception Thrown with ListBox.RemoveAt()
Classification: Mono
Product: Mono: Class Libraries
Version: 2.0.x
Platform: x86-64
OS/Version: openSUSE 11.0
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Windows.Forms
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Found By: Customer
ListBox.Items.RemoveAt(0) throws Exception:
System.ArgumentOutOfRangeException: Argument is out of range.
Parameter name: GetItemRectangle index out of range.
at System.Windows.Forms.ListBox.GetItemRectangle (Int32 index) [0x00167] in
/usr/src/packages/BUILD/mono-2.0.1/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:847
at System.Windows.Forms.ListBox.GetItemDisplayRectangle (Int32 index, Int32
first_displayble) [0x00008] in
/usr/src/packages/BUILD/mono-2.0.1/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1286
at System.Windows.Forms.ListBox.InvalidateItem (Int32 index) [0x0000c] in
/usr/src/packages/BUILD/mono-2.0.1/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1687
at (wrapper remoting-invoke-with-check)
System.Windows.Forms.ListBox:InvalidateItem (int)
at System.Windows.Forms.ListBox+SelectedIndexCollection.ClearCore ()
[0x00030] in
/usr/src/packages/BUILD/mono-2.0.1/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:2699
at System.Windows.Forms.ListBox+SelectedIndexCollection.Clear () [0x00000] in
/usr/src/packages/BUILD/mono-2.0.1/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:2687
at System.Windows.Forms.ListBox.ClearSelected () [0x00000] in
/usr/src/packages/BUILD/mono-2.0.1/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:716
at (wrapper remoting-invoke-with-check)
System.Windows.Forms.ListBox:ClearSelected ()
Code snippet:
private void Status(string msg)
{
if (ListBox1.Items.Count > 7)
ListBox1.Items.RemoveAt(0); // <<= Throws exception here
List.ClearSelected();
int index = ListBox1.Items.Add(msg);
ListBox1.SelectedIndex = index;
}
Steps to reproduce the problem:
1. Add several items to ListBox
2. Try to remove 1st item with ListBox1.Items.RemoveAt(0);
Actual Results: Throws above exception (index out of bounds)
Expected Results: Should remove first item.
How often does this happen? Every time
Additional Information: Mono v2.0.1-18.1-i586
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