如何在ASP.net c#中插入水晶报表查询

I am new to crystal report. I have successfully displayed reports to my crystal report page using Visual Studio's crystal report viewer. Now I am wondering how to insert queries with my crystal report so that I can filter what will be shown on my report. I am using C# and my sql is MS SQL. So far here's my code behind:I am new to crystal report. I have successfully