一个通用的报表显示窗口（WindowsForms)

这也是这两天课堂上的一个范例。我们考虑到有很多报表，不可能为所有的报表单独定义一个窗口来显示，所以最后重构成一个通用的窗口

后台代码

using System;
using Microsoft.Reporting.WinForms;

namespace NorthwindApplication
{
    public partial class ReportForm : NorthwindApplication.FormTemplate
    {
        public ReportForm()
        {
            InitializeComponent();
        }

        public ReportForm(
            string formTitle,
            string reportTitle,
            string reportPath,
            params ReportDataSource[] datasource)
            : this()
        {
            this.Text = formTitle;
            this.FormTitle.Text = reportTitle;
            this.reportViewer1.LocalReport.ReportPath = reportPath;
            this.reportViewer1.LocalReport.DataSources.Clear();
            foreach (var item in datasource)
            {
                this.reportViewer1.LocalReport.DataSources.Add(item);
            }

        }

        private void ReportForm_Load(object sender, EventArgs e)
        {

            this.reportViewer1.RefreshReport();
        }
    }
}

主窗体调用代码

           //这里读取数据，然后实例化报表，然后显示报表
            var formTitle = "员工订单报表";
            var context = new NorthwindDataContext();

            var employee =
                context.Employees.Where(
                    emp => emp.EmployeeID == 1);

            

            if (employee != null)
            {
                var temp = employee.FirstOrDefault();
                var reportTitle = temp.FirstName + "," + temp.LastName;
                var reportPath = "EmployeeOrderReport.rdlc";

                ReportForm report = new ReportForm(
                    formTitle,
                    reportTitle,
                    reportPath,
                    new ReportDataSource(
                        "NorthwindApplication_Employees",
                        employee),
                    new ReportDataSource(
                        "NorthwindApplication_Orders",
                        temp.Orders.ToArray()));


                report.MdiParent = this;
                report.WindowState = FormWindowState.Maximized;
                report.Show();

            }

窗体显示的大致效果如下