When click the Run Report Button i want to show the report

Question

i done a small application in asp.net with csharp code.

Design As Follows;


Project ID             Dropdown  P00001 to P00010,R00001 to R00010 etc.

Project Cost          Textbox1

Project Name         Textbox2

for this i done insert command and records are saved in database.

my Question is in design page i have one textbox and one button,and button name is Projectwisecost.

Textbox3    Projectwisecost(Button Name) .

in textbox3 when i type   P00001 that projectcost,name should be displayed.
suppose when i type      R00001  that projectcost,name should be displayed. 

The above should be displayed in crystal report.how to do.

please help me.