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PropertyGridView: Prevent out-of-range access when committing next enumerable value #14182

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PropertyGridView: Prevent out-of-range access when committing next enumerable value #14182

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1004a4a
Prevent out-of-range access when committing next enumerable value
LeafShi1 Jan 5, 2026
6873346
Fix PropertyGridView.OnMouseWheel - IndexOutOfRangeException
LeafShi1 Jan 5, 2026
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12 changes: 12 additions & 0 deletions ...Forms/System/Windows/Forms/Controls/PropertyGrid/PropertyGridInternal/PropertyGridView.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1298,6 +1298,12 @@ public void DoubleClickRow(int row, bool toggleExpand, int type)
{
object[] values = gridEntry.GetPropertyValueList();

// If values.Length is 0, we can't cycle through anything.
if (values.Length == 0)
{
return;
}

if (index >= (values.Length - 1))
{
index = 0;
Expand Down Expand Up @@ -3177,6 +3183,12 @@ protected override void OnMouseWheel(MouseEventArgs e)
int delta = e.Delta > 0 ? -1 : 1;
object[] values = _selectedGridEntry.GetPropertyValueList();

// Prevent out-of-range access
if (values.Length == 0)
{
return;
}

if (delta > 0 && index >= (values.Length - 1))
{
index = 0;
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