I know SSRS doesn't really have a time data type outside of the datetime type, but I'm trying to have a time column which exports to excel as a time data type. I've tried a few different ways, but the only way that seems to convert over is having the textbox expression =TimeValue("00:30:00"). The problem is this creates a datetime and displays the date portion. I've tried using custom formats of hh:mm:ss, and those look fine while running the report, but excel sees it as a negative datetime which produces a malformed value.
To clarify by example, I have a time 00:30:00 which exists in a textbox on the report that I want to export to excel as 00:30:00 but as a data type of Time so that if someone were to write excel formulas based off of those cells, it would be able to perform time-based arithmetic on them.
Any ideas?