How to format values in datagrid/dataset

[George Yachán]

I have added a new column to a typed dataset which displays an expression
which is the result of one double (data type) field divided by another
double field. I would like format this column to show the number as a whole
number percentage, like 67 instead of as, say, .666666666667.

Is there a place in the expression or a dataset column property or a
datagrid
property twhere I can use the Format() function or some other way to specify
the format I would like?

Seems as though express columns may be read only which makes this even more
interesting.

I am looking for an answer other that using the data adapter's SQL Select
statement which populates the dataset in the first place.

 

[George Yachán]

In order to convert my column to to percent the best I have come up with so
far is to multiply it's expression *100 and to set it's type to Integer.
This is not an elegant solution.