[ilkertskn]

SetCommandTimeout(TimeSpan) and UseCommandTimeout(TimeSpan) converted the timeout with Convert.ToInt32(timeout.TotalSeconds), which rounds anything up to half a second (inclusive, banker's rounding) to 0. A command timeout of 0 means "wait indefinitely", so asking for a 400 ms timeout removed the timeout altogether.

Round a positive timeout that would become 0 up to 1 second, and share the TimeSpan validation between the two overloads.

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