When the left side of one rectangle overlaps with the right side of the other rectangle, rectangles are considered not intersecting.

[Tanya-Solyanik]

It would be good to clarify how IntersectsWith method handles rectangles that overlap borders, X == r.X + Width. WinForms consider this case as not an intersection. WPF considers this as an intersection but does not document this fact either:https://docs.microsoft.com/en-us/dotnet/api/system.windows.rect.intersectswith?view=netframework-4.7.1#System_Windows_Rect_IntersectsWith_System_Windows_Rect_
The difference between the frameworks is confusing. This could be documented with a sample or even a pointer to reference source website.

Another good note would be to mention that this method ignores integer overflows and might be inaccurate due to this fact.

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• ID: 7f5cd207-cade-dd01-bfe0-5303b2bacf49
• Version Independent ID: 931eae53-8fac-b6d6-6324-ca94473f610a
• Content: Rectangle.IntersectsWith(Rectangle) Method (System.Drawing)
• Content Source: xml/System.Drawing/Rectangle.xml
• Service: unspecified
• GitHub Login: @dotnet-bot
• Microsoft Alias: dotnetcontent

[mairaw]

Thanks @Tanya-Solyanik. I've added this to our backlog. But if you'd like to contribute and make the changes sooner, we can review your PR and help you to get that fixed.

[wstaelens]

is there a difference now when doing rect1.InsersectsWith(rect2) vs. rect2.IntersectsWith(rect1) ?
If there is or isn't a difference, maybe better to clearly document this.