While running crystal report on Visual Studio 2010 C# Database login prompts, why?

[Gobindap]

I am using c# (c sharp)to develop my project. I think it is well coded. Crystal report is also designed well. But I have used a Access Database from the disk and when I try to run the report, Database login dialog box prompts me to enter userID and password but I have put no username and password. What should I do to remove this error?


Thanks in advance.