At last I found the answer form Internet.
OleDbDataAdapter dataAdapter = new OleDbDataAdapter("SELECT Descriptn, AssetType, Location, Model, SerialNumber, Status, AssetCode, Dateofpurchase, WarrantyExpiry, Condition, Profile FROM Assets", con);
DataSet ds = new DataSet();
dataAdapter.Fill(ds);
reportViewer1.Reset();
this.reportViewer1.LocalReport.DataSources.Clear();
ReportDataSource reportDataSource = new ReportDataSource();
reportDataSource.Value = ds.Tables[0];
reportDataSource.Name = "DataSetAssetList";
this.reportViewer1.LocalReport.DataSources.Add(reportDataSource);
this.reportViewer1.LocalReport.ReportEmbeddedResource = "AssestsManagementSystem.ReportAssetList.rdlc";
this.reportViewer1.RefreshReport();