MVC。通过多个条件搜索

Question

我有一个视图，可以通过记录进行搜索。

@using (Html.BeginForm("Index", "Project", FormMethod.Get, new { role = "form" })) 
{ 

    <div class="input-group"> 
     <input name="Query" type="text" class="form-control" placeholder=""> 
     <span class="input-group-btn" style="width:0;"> 
      <button class="btn btn-default" type="submit">Search</button> 
     </span> 
    </div> 
} 

@if (Model.Any()) 
{ 
    <div class="col-md-10"> 
     <table class="table table-striped table-hover"> 
      <tr> 
       <th> 
        Year 
       </th> 
       <th> 
        Project 
       </th> 
       <th> 
        Status 
       </th> 
       <th> 

       </th> 
      </tr> 

      @foreach (var item in Model) 
     { 
       <tr> 
        <td> 
         @Html.DisplayFor(m => item.PROJ_YEAR) 
        </td> 
        <td> 
         @Html.DisplayFor(m => item.PROJ_NAME) 
        </td> 
        <td> 
         @Html.DisplayFor(m => item.PROJ_STATUS) 
        </td> 
       </tr> 
      } 
     </table>} 
else 
{ 
    <p style="margin:20px 0;">No Projects found.</p> 
} 

，这里是控制器

public ActionResult Index(int page = 1, string Query = null) 

{ 
    var projectList = db.TBL_PROJECTS.Include(x => x.TBL_STATUS).Where(x => x.PROJ_CAT == 1).ToList().OrderByDescending(x => x.ID); 

    if (!string.IsNullOrEmpty(Query)) 
     { 
      projectList = projectList 
       .Where(x => x.PROJ_NAME.ToLower().Contains(Query.ToLower())) 
       .ToList().OrderByDescending(x => x.ID); 

      if (projectList.Count() == 0) 
      { 
       var list = db.TBL_PROJECTS.Include(x => x.TBL_STATUS).Where(x => x.PROJ_CAT == 1).ToList().OrderByDescending(x => x.ID); 
       projectList = list 
       .Where(x => x.PROJ_YEAR.ToLower().Contains(Query.ToLower())) 
       .ToList().OrderByDescending(x => x.ID); 

      } 

     } 
    return View(new PagedList.PagedList<TBL_PROJECT>(projectList, page, 15)); 
} 

当我执行搜索时，将只执行基于PROJ_NAME搜索。 我也想用“PROJ_YEAR”进行搜索。当我搜索“1998”时，没有记录被发现。当我搜索1998年的“油漆作业”时，会显示记录。

Answer 1

找到了答案。这对稍后有此类问题的人可能会有用。这是我做到的。

if (!string.IsNullOrEmpty(Query)) 
     { 
      projectList = projectList 
       .Where(x => x.PROJ_NAME.ToLower().Contains(Query.ToLower())) 
       .ToList().OrderByDescending(x => x.ID); 
      if (projectList.Count() == 0) 
      { 
       var list = db.TBL_PROJECTS.Include(x => x.TBL_STATUS).Where(x => x.PROJ_CAT == 1).ToList().OrderByDescending(x => x.ID); 
       var k = list 
       .Where(x => x.PROJ_YEAR != null) 
       .ToList().OrderByDescending(x => x.ID); 
       projectList = k 
       .Where(x => x.PROJ_YEAR.ToLower().Contains(Query.ToLower())) 
       .ToList().OrderByDescending(x => x.ID); 


      } 

Answer 2

projectList = projectList 
       .Where(x => x.PROJ_NAME.ToLower().Contains(Query.ToLower()) 
         || x.PROJ_YEAR = Int32.Parse(Query) ) 
       .ToList().OrderByDescending(x => x.ID); 

或者使用Int32.TryParse()

Answer 3

因为你只比较项目名称列。因此，当你提交一年它不起作用。您应该修改您的控制器，例如：

public ActionResult Index(int page = 1, string Query = null) 

    { 
     var projectList = db.TBL_PROJECTS.Include(x => x.TBL_STATUS).Where(x => x.PROJ_CAT == 1).ToList().OrderByDescending(x => x.ID); 

     if (!string.IsNullOrEmpty(Query)) 
     { 
      projectList = projectList 
       .Where(x => x.PROJ_NAME.ToLower().Contains(Query.ToLower()) 
         || x.PROJ_YEAR.ToLower().Contains(Query.ToLower())) 
       .ToList().OrderByDescending(x => x.ID); 

     } 

     return View(new PagedList.PagedList<TBL_PROJECT>(projectList, page, 15)); 
    }