要获取每个部门的总结，可以使用ASP.NET中的LINQ查询。以下是一个示例代码，使用LINQ从数据库中获取每个部门的总结：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // 创建一个部门类
        public class Department
        {
            public int DepartmentId { get; set; }
            public string DepartmentName { get; set; }
        }

        // 创建一个总结类
        public class Summary
        {
            public int DepartmentId { get; set; }
            public string SummaryText { get; set; }
        }

        // 创建一个部门总结的列表
        List
 summaries = new List
()
        {
            new Summary { DepartmentId = 1, SummaryText = "Summary 1" },
            new Summary { DepartmentId = 2, SummaryText = "Summary 2" },
            new Summary { DepartmentId = 1, SummaryText = "Summary 3" },
            new Summary { DepartmentId = 3, SummaryText = "Summary 4" }
        };

        // 创建一个部门列表
        List departments = new List()
        {
            new Department { DepartmentId = 1, DepartmentName = "Department 1" },
            new Department { DepartmentId = 2, DepartmentName = "Department 2" },
            new Department { DepartmentId = 3, DepartmentName = "Department 3" }
        };

        // 使用LINQ查询每个部门的总结
        var departmentSummaries = from summary in summaries
                                  join department in departments on summary.DepartmentId equals department.DepartmentId
                                  group summary by department into g
                                  select new
                                  {
                                      DepartmentName = g.Key.DepartmentName,
                                      Summaries = string.Join(", ", g.Select(s => s.SummaryText))
                                  };

        // 输出每个部门的总结
        foreach (var departmentSummary in departmentSummaries)
        {
            Response.Write("Department: " + departmentSummary.DepartmentName + "
");
            Response.Write("Summaries: " + departmentSummary.Summaries + "

");
        }
    }
}

在上面的示例中，我们首先定义了一个Department类和一个Summary类，分别表示部门和总结。然后，我们创建了一个summaries列表，其中包含部门总结的数据，以及一个departments列表，其中包含部门的数据。

接下来，我们使用LINQ查询将两个列表连接在一起，并按部门进行分组。最后，我们使用foreach循环遍历每个部门的总结，并输出部门名称和总结内容。

请注意，上述示例仅用于演示如何使用LINQ从数据库中获取部门的总结，并输出到页面上。实际情况中，你可能需要根据你的环境和数据结构进行相应的修改和调整。