Dynamically creating a columns in asp.net gridview -

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i doing project on hotels. in booking page room types , availability, , rates have populate on gridview given dates.

below roomtypes in hotel admin page.

enter image description here

image below binding room rates given date. enter image description here

currently binding data using sql query each cell.so taking time load page.

i need find faster method bind data.

code have using given below.

dim dtx new datatable

/// sql command load roomtypes.

while dr.read dtr = dtx.newrow() dim datearray() string = lbl_checkindate.text.split("/") dim xdt1 new date(cint(datearray(2)), cint(datearray(0)), cint(datearray(1))) dtr("room type") = dr("r_type").tostring dtr("book") = dr("r_id").tostring      x = 1 15     tmpdt = left(weekdayname(weekday(xdt1)), 3) & vbnewline & day(xdt1) & " " & left(monthname(month(xdt1)), 3)      price = cls_function.gettabledata("select isnull(rent_a,0) rent_a tbl_hotelroom h_id = " & val(request.querystring("hid")) & " , r_id = " & val(dr("r_id").tostring) & " , f_dt <= '" & year(xdt1) & "-" & month(xdt1) & "-" & day(xdt1) & "' , t_dt >= '" & year(xdt1) & "-" & month(xdt1) & "-" & day(xdt1) & "'")  if price = nothing         dtr(tmpdt) = cls_function.gettabledata("select isnull(rent_a,0) rent_a tbl_hotelroom h_id = " & val(request.querystring("hid")) & " , r_id = " & val(dr("r_id").tostring) & " , f_dt <= '" & year(xdt1) & "-" & month(xdt1) & "-" & day(xdt1) & "' , t_dt >= '" & year(xdt1) & "-" & month(xdt1) & "-" & day(xdt1) & "'")  else    dtr(tmpdt) = format(price, "n") end if  xdt1 = dateadd(dateinterval.day, 1, xdt1) next dtx.rows.add(dtr)

although not clear going guess calling database each of dates room rate. better approach write stored procedure return room rates next x dates given room type. if sproc returns data multiple rows (rather 1 row many columns, trickier sql) business logic manipulation data in format need bind grid.


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