How to set time interval when hitting keyboard for autoComplete?

AutoComplete Populating will repond to each key typing for when you input data in AutoComp开发者_运维知识库lete.

Is it posssible to set time interval to respond key typing?

For example, set MinimumPrefixLength=3 for an AutoComplete. If user input "School" in the box with within 3 seconds and time interval is set as 5 second, then Populating event only fired one time, otherwise it will be fired 3 times, if Populating connect to async call, that will be a big issue for performance.

Does the MinimumPopulateDelay property not acheive your goal?