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When setting both Height and MinimumHeight in DataGridView's VirtualMode and the new Height value is less then the previous MinimumHeight value we get a crash.
Created attachment 1058 [details]
Unit test that demonstrates the problem and suggested fix
I like the little refactoring done in the patch, which avoids repetition. However, 2 of the 3 unit tests fail with .NET.
RowHeightLessThanOldMinHeightVirtMode: "Expected: 2 But was: 5"
RowHeightLessThanMinHeightVirtMode: "System.ArgumentOutOfRangeException was expected"
By the way, I suggest to drop the ExpectedException attribute, and use Assert.Throws instead.