.NET Core Razor

页面显示

@page
@Html.AntiForgeryToken()
@model Webcore.Pages.ListModel
@{ViewData["Title"] = "List";
}<h1>List</h1><form method="post"><p>物品名称: <input type="text" name="PName" style="height:35px;padding-bottom: 6px;" /><select name="CatId" asp-items="Model.Category" style="width:130px;height:35px;padding-bottom:5px"><option value="0">请选择</option></select><input class="btn btn-success" type="submit" value="查 询" /><a class="btn btn-info" asp-page="Add">添 加</a></p>
</form>@using (Html.BeginForm(FormMethod.Post))
{<div><p>物品名称: <input type="text" asp-for="PName" style="height:35px;padding-bottom: 6px;" /><select asp-for="CatId" asp-items="Model.Category" style="width:130px;height:35px;padding-bottom:5px"><option value="0">请选择</option></select><input class="btn btn-success" type="submit" value="查 询" /><a class="btn btn-info" asp-page="Add">添 加</a></p></div>
}<table class="table"><thead><tr><th>@Html.DisplayNameFor(model => model.Product[0].ProductName)</th><th>@Html.DisplayNameFor(model => model.Product[0].IsUp)</th><th>@Html.DisplayNameFor(model => model.Product[0].UnitPrice)</th><th>@Html.DisplayNameFor(model => model.Product[0].Remark)</th><th>@Html.DisplayNameFor(model => model.Product[0].Category)</th><th></th></tr></thead><tbody>@foreach (var item in Model.Product){<tr><td>@Html.DisplayFor(modelItem => item.ProductName)</td><td>@Html.DisplayFor(modelItem => item.IsUp)</td><td>@Html.DisplayFor(modelItem => item.UnitPrice)</td><td>@Html.DisplayFor(modelItem => item.Remark)</td><td>@Html.DisplayFor(modelItem => item.Category.CategoryName)</td><td><a asp-page="./Edit" asp-route-id="@item.ProductId">编辑</a> |<a href="javascript:void(0);" data-del="@item.ProductId">删除</a></td></tr>}</tbody>
</table>@section scripts{<script type="text/javascript">$("a[data-del]").click(function () {var $this = $(this);var id = $this.attr("data-del");if (confirm("确定要删除吗？")) {$.ajax({type: "POST",contentType: "application/x-www-form-urlencoded",url: "?handler=Delete",data: { id: id },success: function (data) {if (data == "yes") {alert("删除成功");$this.closest("tr").remove();} else {alert("删除失败");}},error: function () {alert("程序异常！查询出错"); return;}}).then(function (row) {console.log(row);})}});</script>
}

页面显示和查询

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.EntityFrameworkCore;
using Webcore.Model;
using Webcore.Model.Entity;namespace Webcore.Pages
{public class ListModel : PageModel{private readonly Webcore.Model.EntityDbContext _context;public ListModel(Webcore.Model.EntityDbContext context){_context = context;}public IList<Product> Product { get; set; }public SelectList Category;public int CatId { get; set; }public string PName { get; set; }public async Task OnGetAsync(int CatId, string PName){var product = from m in _context.Products.Include(p => p.Category) select m;if (!string.IsNullOrEmpty(PName)){product = product.Where(s => s.ProductName.Contains(PName));}if (CatId != 0){product = product.Where(s => s.CategoryId == CatId);}Category = new SelectList(_context.Categories, "CategoryId", "CategoryName");Product = await product.ToListAsync();}public async Task OnPostAsync(int CatId, string PName){var product = from m in _context.Products.Include(p => p.Category) select m;if (!string.IsNullOrEmpty(PName)){product = product.Where(s => s.ProductName.Contains(PName));}if (CatId != 0){product = product.Where(s => s.CategoryId == CatId);}Category = new SelectList(_context.Categories, "CategoryId", "CategoryName");Product = await product.ToListAsync();}public async Task<IActionResult> OnPostDelete(int id){if (!ModelState.IsValid){return Page();}var model = _context.Products.FirstOrDefault(b => b.ProductId == id);if (model == null){return new JsonResult("no");}_context.Products.Remove(model);await _context.SaveChangesAsync();return new JsonResult("yes");}}
}

添加

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.EntityFrameworkCore;
using Webcore.Model;
using Webcore.Model.Entity;

namespace Webcore.Pages
{
public class ListModel : PageModel
{
private readonly Webcore.Model.EntityDbContext _context;

public ListModel(Webcore.Model.EntityDbContext context)
{
_context = context;
}
public IList<Product> Product { get; set; }

public SelectList Category;
public int CatId { get; set; }

public string PName { get; set; }
public async Task OnGetAsync(int CatId, string PName)
{
var product = from m in _context.Products.Include(p => p.Category) select m;

if (!string.IsNullOrEmpty(PName))
{
product = product.Where(s => s.ProductName.Contains(PName));
}
if (CatId != 0)
{
product = product.Where(s => s.CategoryId == CatId);
}

Category = new SelectList(_context.Categories, "CategoryId", "CategoryName");
Product = await product.ToListAsync();
}

public async Task OnPostAsync(int CatId, string PName)
{
var product = from m in _context.Products.Include(p => p.Category) select m;

if (!string.IsNullOrEmpty(PName))
{
product = product.Where(s => s.ProductName.Contains(PName));
}
if (CatId != 0)
{
product = product.Where(s => s.CategoryId == CatId);
}

Category = new SelectList(_context.Categories, "CategoryId", "CategoryName");
Product = await product.ToListAsync();
}

public async Task<IActionResult> OnPostDelete(int id)
{
if (!ModelState.IsValid)
{
return Page();
}
var model = _context.Products.FirstOrDefault(b => b.ProductId == id);
if (model == null)
{
return new JsonResult("no");
}
_context.Products.Remove(model);
await _context.SaveChangesAsync();
return new JsonResult("yes");
}

}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.Mvc.Rendering;
using Webcore.Model;
using Webcore.Model.Entity;

namespace Webcore.Pages
{
public class AddModel : PageModel
{
private readonly Webcore.Model.EntityDbContext _context;

public AddModel(Webcore.Model.EntityDbContext context)
{
_context = context;
}

public IActionResult OnGet()
{
ViewData["CategoryId"] = new SelectList(_context.Categories, "CategoryId", "CategoryName");
return Page();
}

[BindProperty]
public Product Product { get; set; }

public async Task<IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return Page();
}
_context.Products.Add(Product);
await _context.SaveChangesAsync();

return RedirectToPage("./List");
}

}
}

修改

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.EntityFrameworkCore;
using Webcore.Model;
using Webcore.Model.Entity;namespace Webcore.Pages
{public class EditModel : PageModel{private readonly Webcore.Model.EntityDbContext _context;public EditModel(Webcore.Model.EntityDbContext context){_context = context;}[BindProperty]public Product Product { get; set; }public async Task<IActionResult> OnGetAsync(int? id){if (id == null){return NotFound();}Product = await _context.Products.Include(p => p.Category).FirstOrDefaultAsync(m => m.ProductId == id);if (Product == null){return NotFound();}ViewData["CategoryId"] = new SelectList(_context.Categories, "CategoryId", "CategoryName");return Page();}public async Task<IActionResult> OnPostAsync(){if (!ModelState.IsValid){return Page();}_context.Attach(Product).State = EntityState.Modified;try{await _context.SaveChangesAsync();}catch (DbUpdateConcurrencyException){if (!ProductExists(Product.ProductId)){return NotFound();}else{throw;}}return RedirectToPage("./List");}private bool ProductExists(int id){return _context.Products.Any(e => e.ProductId == id);}}
}

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.NET Core Razor

页面显示

页面显示和查询

添加

修改

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