我尝试在基于版本的过滤器完成后输出到excel。我已经能够输出到excel但我不明白如何在基于VERSION过滤结果后输出到excel表。例如，当我过滤版本11.3并按go时，索引页面仅显示版本与我选择的版本匹配的行。我想做一些与输出相似的东西。因此，当我按ALL过滤时，它将输出每一行，但是当我过滤11.3作为版本的记录时，我只想输出具有正确版本的行。我希望这是有道理的，我已经附加了我的控制器和我的索引页面。如果需要任何其他代码，请告诉我我会经常回来查看。谢谢你的帮助！
using System;
using System.Collections.Generic;
using System.Linq;
using System.Data.Linq;
using System.Data.Linq.Mapping;
using System.Web.UI.WebControls;
using System.Web;
using System.Web.Mvc;
using System.Data;
using PagedList;
using PagedList.Mvc;
using DBFirstMVC.Controllers;
using System.IO;
using DBFirstMVC;
using System.Web.UI;
using DBFirstMVC.Models;
namespace DBFirstMVC.Controllers
{
public class PaController : Controller
{
PaEntities db = new PaEntities();
// Index Method
public ViewResult Index(string sortOrder, string currentFilter, string searchString, int? page, string Versions)
{
var IAMP = from p in db.iamp_mapping select p;
if (Versions != null && Versions != String.Empty) // Dropdown Sort Function
{
IAMP = IAMP.Where(v => v.VERSION.Contains(Versions));
}
var VIAMP = from x in db.version_number select x;
ViewBag.CurrentSort = sortOrder; //ViewBag property provides the view with the current sort order
ViewBag.NameSortParm = String.IsNullOrEmpty(sortOrder) ? "PA desc" : ""; // Calls the sortOrder switch/case PA desc or default
ViewBag.MPSortParm = sortOrder == "MP" ? "MP desc" : "MP asc"; // Calls the sortOrder switch/case MP desc or MP asc
ViewBag.IASortParm = sortOrder == "IA" ? "IA desc" : "IA asc"; // Calls the sortOrder switch/case IA desc or IA asc
ViewBag.VersionSortParm = sortOrder == "VERSION" ? "Version desc" : "Version asc"; // Calls the sortOrder switch/case Version desc or Version asc
ViewBag.IAMP_PKSortParm = sortOrder == "IAMP_PK" ? "IAMP_PK desc" : "IAMP_PK asc"; // Calls the sortOrder switch/case IAMP_PK desc or IAMP_PK asc
if (Request.HttpMethod == "GET")
{
searchString = currentFilter; //sets the currentFilter equal to Searchstring
}
else
{
page = 1; // defaults to page 1
}
ViewBag.CurrentFilter = searchString; // Provides the view with the current filter string
if (!String.IsNullOrEmpty(searchString))
{
IAMP = IAMP.Where(p => p.PA.ToUpper().Contains(searchString.ToUpper())); //selects only records that contains the search string
}
switch (sortOrder) // switch case changes based on desired sort
{
case "Pa desc":
IAMP = IAMP.OrderByDescending(p => p.PA);
break;
case "MP desc":
IAMP = IAMP.OrderByDescending(p => p.MAJOR_PROGRAM);
break;
case "MP asc":
IAMP = IAMP.OrderBy(p => p.MAJOR_PROGRAM);
break;
case "IA desc":
IAMP = IAMP.OrderByDescending(p => p.INVESTMENT_AREA);
break;
case "IA asc":
IAMP = IAMP.OrderBy(p => p.INVESTMENT_AREA);
break;
case "Version asc":
VIAMP = VIAMP.OrderBy(x => x.VERSION);
break;
case "Version desc":
VIAMP = VIAMP.OrderByDescending(x => x.VERSION);
break;
case "IAMP_PK asc":
IAMP = IAMP.OrderBy(p => p.IAMP_PK);
break;
case "IAMP_PK desc":
IAMP = IAMP.OrderByDescending(p => p.IAMP_PK);
break;
default:
IAMP = IAMP.OrderBy(p => p.PA);
break;
}
int pageSize = 15; // number of records shown on page view
int pageNumber = (page ?? 1); // start page number
ViewData["Versions"] = new SelectList(VIAMP.Select(x => x.VERSION));
return View(IAMP.ToPagedList(pageNumber, pageSize)); // uses pagedList method to return correct page values
}
// Instantiates create method
// GET: /Pa/Create
public ActionResult Create()
{
SetVersionViewBag();
return View();
}
// Create method adds records to Database and saves changes
// POST: /Pa/Create
[HttpPost]
public ActionResult Create(iamp_mapping IAMP, version_number VIAMP)
{
try
{
using (var db = new PaEntities())
{
db.iamp_mapping.Add(IAMP);
db.SaveChanges();
}
return RedirectToAction("Index");
}
catch
{
ViewBag.VERSION = new MultiSelectList(db.version_number, "VERSION", "VERSION", VIAMP.VERSION);
return View(VIAMP);
}
}
// Instantiates Edit Method
// GET: /Pa/Edit/5
public ActionResult Edit(string id)
{
var VIAMP = from x in db.version_number select x;
iamp_mapping IAMP = db.iamp_mapping.Find(id);
ViewData["Versions"] = new SelectList(VIAMP.Select(x => x.VERSION));
return View(IAMP);
}
// Edit method modifies existing records and saves changes
// POST: /Pa/Edit/5
[HttpPost]
public ActionResult Edit(string id, iamp_mapping IAMP)
{
var VIAMP = from x in db.version_number select x;
{
if (ModelState.IsValid)
{
db.Entry(IAMP).State = EntityState.Modified;
db.SaveChanges();
return RedirectToAction("Index");
}
ViewBag.VERSION = new MultiSelectList(db.version_number, "VERSION", "VERSION");
return View(IAMP);
}
}
// Instantiates delete method
// GET: /Pa/Delete/5
public ActionResult Delete(string id)
{
using (var db = new PaEntities())
{
var VIAMP = from x in db.version_number select x;
return View(db.iamp_mapping.Find(id));
}
}
// Delete method renames primary key and then removes record from database
// POST: /Pa/Delete/5
[HttpPost]
public ActionResult Delete(string id, iamp_mapping IAMP)
{
try
{
using (var db = new PaEntities())
{
var vIAMP = db.iamp_mapping.Find(id);
db.Entry(vIAMP).State = EntityState.Deleted;
db.SaveChanges();
return RedirectToAction("Index");
}
}
catch (Exception e)
{
throw (e);
//return View();
}
}
public ActionResult ExcelOutput(iamp_mapping IAMP)
{
var iamp_mapping = db.iamp_mapping as IEnumerable<iamp_mapping>;
var grid = new GridView
{
DataSource = from p in iamp_mapping
select new
{
PA = p.PA,
MP = p.MAJOR_PROGRAM,
IA = p.INVESTMENT_AREA,
Version = p.VERSION,
IAMP_PK = p.IAMP_PK
}
};
grid.DataBind();
Response.ClearContent();
Response.AddHeader("content-dispostion", "inline; filename= Excel.xls");
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
grid.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();
return View("Index");
}
private void SetVersionViewBag(string VERSION = null)
{
if (VERSION == null)
ViewBag.VERSION = new MultiSelectList(db.version_number, "VERSION", "VERSION");
else
ViewBag.VERSION = new MultiSelectList(db.iamp_mapping, "VERSION", "VERSION", VERSION);
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Data.Linq;
using System.Data.Linq.Mapping;
using System.Web.UI.WebControls;
using System.Web;
using System.Web.Mvc;
using System.Data;
using PagedList;
using PagedList.Mvc;
using DBFirstMVC.Controllers;
using System.IO;
using DBFirstMVC;
using System.Web.UI;
using DBFirstMVC.Models;
namespace DBFirstMVC.Controllers
{
public class PaController : Controller
{
PaEntities db = new PaEntities();
// Index Method
public ViewResult Index(string sortOrder, string currentFilter, string searchString, int? page, string Versions)
{
var IAMP = from p in db.iamp_mapping select p;
if (Versions != null && Versions != String.Empty) // Dropdown Sort Funtion
{
IAMP = IAMP.Where(v => v.VERSION.Contains(Versions));
}
var VIAMP = from x in db.version_number select x;
ViewBag.CurrentSort = sortOrder; //ViewBag property provides the view with the current sort order
ViewBag.NameSortParm = String.IsNullOrEmpty(sortOrder) ? "PA desc" : ""; // Calls the sortOrder switch/case PA desc or default
ViewBag.MPSortParm = sortOrder == "MP" ? "MP desc" : "MP asc"; // Calls the sortOrder switch/case MP desc or MP asc
ViewBag.IASortParm = sortOrder == "IA" ? "IA desc" : "IA asc"; // Calls the sortOrder switch/case IA desc or IA asc
ViewBag.VersionSortParm = sortOrder == "VERSION" ? "Version desc" : "Version asc"; // Calls the sortOrder switch/case Version desc or Version asc
ViewBag.IAMP_PKSortParm = sortOrder == "IAMP_PK" ? "IAMP_PK desc" : "IAMP_PK asc"; // Calls the sortOrder switch/case IAMP_PK desc or IAMP_PK asc
if (Request.HttpMethod == "GET")
{
searchString = currentFilter; //sets the currentFilter equal to Searchstring
}
else
{
page = 1; // defaults to page 1
}
ViewBag.CurrentFilter = searchString; // Provides the view with the current filter string
if (!String.IsNullOrEmpty(searchString))
{
IAMP = IAMP.Where(p => p.PA.ToUpper().Contains(searchString.ToUpper())); //selects only records that contains the search string
}
switch (sortOrder) // switch case changes based on desired sort
{
case "Pa desc":
IAMP = IAMP.OrderByDescending(p => p.PA);
break;
case "MP desc":
IAMP = IAMP.OrderByDescending(p => p.MAJOR_PROGRAM);
break;
case "MP asc":
IAMP = IAMP.OrderBy(p => p.MAJOR_PROGRAM);
break;
case "IA desc":
IAMP = IAMP.OrderByDescending(p => p.INVESTMENT_AREA);
break;
case "IA asc":
IAMP = IAMP.OrderBy(p => p.INVESTMENT_AREA);
break;
case "Version asc":
VIAMP = VIAMP.OrderBy(x => x.VERSION);
break;
case "Version desc":
VIAMP = VIAMP.OrderByDescending(x => x.VERSION);
break;
case "IAMP_PK asc":
IAMP = IAMP.OrderBy(p => p.IAMP_PK);
break;
case "IAMP_PK desc":
IAMP = IAMP.OrderByDescending(p => p.IAMP_PK);
break;
default:
IAMP = IAMP.OrderBy(p => p.PA);
break;
}
int pageSize = 15; // number of records shown on page view
int pageNumber = (page ?? 1); // start page number
ViewData["Versions"] = new SelectList(VIAMP.Select(x => x.VERSION));
return View(IAMP.ToPagedList(pageNumber, pageSize)); // uses pagedList method to return correct page values
}
// Instantiates create method
// GET: /Pa/Create
public ActionResult Create()
{
SetVersionViewBag();
return View();
}
// Create method adds records to Database and saves changes
// POST: /Pa/Create
[HttpPost]
public ActionResult Create(iamp_mapping IAMP, version_number VIAMP)
{
try
{
using (var db = new PaEntities())
{
db.iamp_mapping.Add(IAMP);
db.SaveChanges();
}
return RedirectToAction("Index");
}
catch
{
ViewBag.VERSION = new MultiSelectList(db.version_number, "VERSION", "VERSION", VIAMP.VERSION);
return View(VIAMP);
}
}
// Instantiates Edit Method
// GET: /Pa/Edit/5
public ActionResult Edit(string id)
{
var VIAMP = from x in db.version_number select x;
iamp_mapping IAMP = db.iamp_mapping.Find(id);
ViewData["Versions"] = new SelectList(VIAMP.Select(x => x.VERSION));
return View(IAMP);
}
// Edit method modifies existing records and saves changes
// POST: /Pa/Edit/5
[HttpPost]
public ActionResult Edit(string id, iamp_mapping IAMP)
{
var VIAMP = from x in db.version_number select x;
{
if (ModelState.IsValid)
{
db.Entry(IAMP).State = EntityState.Modified;
db.SaveChanges();
return RedirectToAction("Index");
}
ViewBag.VERSION = new MultiSelectList(db.version_number, "VERSION", "VERSION");
return View(IAMP);
}
}
// Instantiates delete method
// GET: /Pa/Delete/5
public ActionResult Delete(string id)
{
using (var db = new PaEntities())
{
var VIAMP = from x in db.version_number select x;
return View(db.iamp_mapping.Find(id));
}
}
// Delete method renames primary key and then removes record from database
// POST: /Pa/Delete/5
[HttpPost]
public ActionResult Delete(string id, iamp_mapping IAMP)
{
try
{
using (var db = new PaEntities())
{
var vIAMP = db.iamp_mapping.Find(id);
db.Entry(vIAMP).State = EntityState.Deleted;
db.SaveChanges();
return RedirectToAction("Index");
}
}
catch (Exception e)
{
throw (e);
//return View();
}
}
public ActionResult ExcelOutput(iamp_mapping IAMP)
{
var iamp_mapping = db.iamp_mapping as IEnumerable<iamp_mapping>;
var grid = new GridView
{
DataSource = from p in iamp_mapping
select new
{
PA = p.PA,
MP = p.MAJOR_PROGRAM,
IA = p.INVESTMENT_AREA,
Version = p.VERSION,
IAMP_PK = p.IAMP_PK
}
};
grid.DataBind();
Response.ClearContent();
Response.AddHeader("content-dispostion", "inline; filename= Excel.xls");
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
grid.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();
return View("Index");
}
private void SetVersionViewBag(string VERSION = null)
{
if (VERSION == null)
ViewBag.VERSION = new MultiSelectList(db.version_number, "VERSION", "VERSION");
else
ViewBag.VERSION = new MultiSelectList(db.iamp_mapping, "VERSION", "VERSION", VERSION);
}
}
}