Making Master Detail Combo Boxes in Asp.net work without post back

[samiullah478]

I want to populate two combo boxes. One is showing customer data
and second is showing the order no details related to all this cusotmer.
there is relation of master detail. on changing master record in first combo page refreshes and a postback is called and second combo again populate accordinly.
i want to do this using call backs . i dont want to postback again and again on chaning master records. is it doing in ajax with asp.net? wht i have to do. if some one has sample code in vb.net.aspx file then kindly
kindly tell me wht to do
thanks in advance

[govindsyadav]

samiullah ,

this is achivable using ajax control toolk kit . you will find ample sample over their along with code .

what you need is a cascading drop down so kindly follow that for refrence .

Happy coding .

Govind s Yadav