The date range component provides an intuitive, drag-and-drop way to select a contiguous range of time. The user is shown a timeline and can drag or stretch the selection box around on the timeline. The selected range is always a whole number of units, where the unit is determined by the current zoom level.
Note: The Start/End dates and Outer Start/End dates will be ignored when the window opens unless the Startup Mode property is set to "None."
Data Density Histogram
As an advanced optional feature, the date range can display a data density histogram inside the timeline. This is useful for historical data with gaps in it, so that the end user isn't hunting for data. (Tip: this is also great for demos, to make it easy to find historical data in a database that isn't being continuously updated).
To use this feature, bind the Data Density dataset to a query that returns just the timestamps of the target table. These timestamps will be used to fill in the histogram behind the timeline. You can use the Outer Range Start Date and Outer Range End Date properties in your query to limit the overall return size for the query. Note: timestamps must be ordered by date (ascending) to display correctly.