使用c#和ms-access和dataset时水晶报表数据库登录提示

string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\path\\to\\database.mdb;User Id=username;Password=password;";

using (OleDbConnection connection = new OleDbConnection(connectionString))
{
    connection.Open();

    OleDbDataAdapter adapter = new OleDbDataAdapter("SELECT * FROM TableName", connection);
    DataSet dataSet = new DataSet();
    adapter.Fill(dataSet, "TableName");

    // 使用数据集作为报表的数据源
    ReportDocument report = new ReportDocument();
    report.Load("path/to/report.rpt");
    report.SetDataSource(dataSet);

    // 显示报表
    CrystalReportViewer viewer = new CrystalReportViewer();
    viewer.ReportSource = report;
    viewer.RefreshReport();
}