how can solve this error

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C#

C#4.0

hi friends,

This is my code for crystal report.

int rollno = Convert.ToInt32(textBox1.Text);
          CrystalReport1 report = new CrystalReport1();
          DataSet1 data = new DataSet1();
          System.Data.SqlClient.SqlConnection sqlcon;
           string config   = System.Configuration.ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
           sqlcon = new System.Data.SqlClient.SqlConnection(config);
           System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand("sp_getstudentforsearchbyrollno", sqlcon);
          cmd.CommandType = CommandType.StoredProcedure;
          cmd.Parameters.Add("@rollno",rollno);
          System.Data.SqlClient.SqlDataAdapter da = new System.Data.SqlClient.SqlDataAdapter(cmd);
          da.Fill(data, "DataTable1");
          report.SetDataSource(data);
          crystalReportViewer1.ReportSource = report;

error in the line of

report.SetDataSource(data);

this is my error.

Could not load file or assembly 'file:///C:\Program Files\SAP BusinessObjects\Crystal Reports for .NET Framework 4.0\Common\SAP BusinessObjects Enterprise XI 4.0\win32_x86\dotnet1\crdb_adoplus.dll' or one of its dependencies. The system cannot find the file specified.

but normal crystal report works fine. the working crystal report code is below

//ReportDocument cryrpt = new ReportDocument();
            //cryrpt.Load("D:\\baskaran/crysexample/crysexample/CrystalReport1.rpt");
            //crystalReportViewer1.ReportSource = cryrpt;
            //crystalReportViewer1.Refresh();

how can solve this error