//连接字符串 string connstr = "Data Source=.;Initial Catalog=WWALMDB;User ID=sa;Password=sqlsql";//新建连接 SqlConnection connection = new SqlConnection(connstr);//查询命令 SqlCommand command = new SqlCommand(textBoxSQL.Text, connection);//适配器 SqlDataAdapter adapter = new SqlDataAdapter(command);//数据集 DataSet ds = new DataSet();//查询并填充 try{
connection.Open();
adapter.Fill(ds);
}catch (Exception ex)
{
MessageBox.Show(ex.Message);
}finally{
connection.Close();
command.Dispose();
connection.Dispose();
}//指定rdlc报表 this.reportViewer1.LocalReport.ReportEmbeddedResource = "FormReport.EventReport.rdlc";//清空reportviewer先前的数据源 this.reportViewer1.LocalReport.DataSources.Clear();//新建数据源 ReportDataSource rs = new ReportDataSource();
rs.Name = "EventHistory";//"EventHistory"是rdlc报表Tablib属性下的数据集名称 rs.Value = ds.Tables[0];//添加数据源 this.reportViewer1.LocalReport.DataSources.Add(rs);//显示数据 this.reportViewer1.RefreshReport();