c# - Linq Table Group By Get Perecentage in each column -


i have datatable 2 columns:

guitarbrand | status --------------------- fender      | sold fender      | in stock gibson      | in stock gibson      | in stock

i want write linq query output

 guitarbrand | percentsold | sold/total  ---------------------------------------  fender      | 50%          | 1/2  gibson      | 100%         | 2/2

here's have far:

var groupedtable = b in table.asenumerable()     group b b.field<"guitarbrand"> g     select new ( guitarbrand = g.key, perecent = (float)g.count()/(float)g.key)

which got post isn't close working, cannot convert string float. i've tried looking @ other posts can't find anything.

thanks!

you can use following (hopefully self explanatory) query:

var groupedtable =      b in table.asenumerable()     group b b.field<string>("guitarbrand") g     let total = g.count()     let sold = g.count(e => e.field<string>("status") == "sold")     let soldpercent = (float)sold / (float)total     select new     {         guitarbrand = g.key,         percentsold = soldpercent.tostring("p"),         totalsold = sold + "/" + total     };

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