RadAutoCompleteBox supports definining a symbol count that must be reached
in the input string before a filtering operation is performed. This is done using
the FilterStartThreshold property.
Using the FilterStartThreshold property
The FilterStartThreshold property is of type int
and can be used to define the length of the input string after which the filtering procedure
is started. This may be used in scenarios where the user needs to type a given amount of symbols at least to perform filtering.
The following XAML code snippet demonstrates setting the FilterStartThreshold property: