y-axis with date

i have a graph to plot, with dates in each axis, in x axis i have a date that represent the date pictures of taks was taken, and in the y-axis i would like to put the finish dates of that task, my query returns 开发者_JAVA技巧something like this Task PictureDate FinishDate A 01-03-2010 20-05-2010 A 08-03-2010 20-05-2010 A 15-03-2010 22-05-2010 B 01-03-2010 12-06-2010 B 08-03-2010 13-06-2010 B 15-03-2010 14-06-2010

I can not put the Finishdate in y-axis, is there a workaround i can use to display y-axis label as date?

I don't know if it could apply for this, but in .Net we can use a DateTime as a double by doing.

Datetime dt = new DateTime()
double l = dt.toOADate();
dt = Datetime.FromOADate(double l);

Maybe by giving a format or axistype or something like this you can do it.