I am trying to create a search function that allows the user to search a column that is specified by a dropdown, I have been able to get the search to work but only by using a specific column and a contains method. Can anyone help?
Below I have included my controller and my view, please let me know if you need any other code. Thanks for your time and help!
I am almost positive that this is the code that I have to alter to use the dropdown to search instead of a specific column.
if (!String.IsNullOrEmpty(searchString))
{
IAMP = IAMP.Where(p => p.PA.ToUpper().Contains(searchString.ToUpper()));
}
Controller
public class PaController : Controller
{
PaEntities db = new PaEntities();
// Index Method
public ViewResult Index(string CurrentField, string sortField, string sortOrder, string currentFilter, string searchString, int? page, string Versions, string VPS, string Directors, string IAMP_SEARCH)
{
ViewBag.CurrentOrder = sortOrder = String.IsNullOrEmpty(sortOrder) ? "asc" : sortOrder; // Provides the order to sort
ViewBag.CurrentField = sortField = String.IsNullOrEmpty(sortField) ? "IAMP_PK" : sortField; // Provides the field to sort
var IAMP = from p in db.iamp_mapping select p;
var ISER = from s in db.iamp_search_string select s;
if (Versions != null && Versions != String.Empty) // Version Dropdown Sort Function
{
IAMP = IAMP.Where(v => v.VERSION.Contains(Versions));
}
var VIAMP = from x in db.version_number select x;
var VPIAMP = from v in db.vp_table select v;
var DIAMP = from d in db.director_table select d;
ViewData["SelectedVersion"] = Versions;
ViewData["Versions"] = new SelectList(VIAMP.Select(x => x.VERSION));
ViewData["VPS"] = new SelectList(VPIAMP.Select(x => x.VP));
ViewData["Directors"] = new SelectList(DIAMP.Select(x => x.DIRECTOR));
ViewData["currentFilter"] = currentFilter;
ViewData["IAMP_SEARCH"] = IAMP_SEARCH;
ViewData["IAMP_SEARCH"] = new SelectList(ISER.Select(x => x.IAMP_SEARCH));
if (Request.HttpMethod == "GET") {
searchString = currentFilter; //sets the currentFilter equal to Searchstring
IAMP_SEARCH = sortField;
}
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()));
}
switch (sortField) {
default: IAMP = sortOrder == "asc" ? IAMP.OrderBy(p => p.PA) : IAMP.OrderByDescending(p => p.PA); break;
case "VERSION": IAMP = sortOrder == "asc"? IAMP.OrderBy(p => p.VERSION) : IAMP.OrderByDescending(p => p.VERSION); break;
case "MAJOR_PROGRAM": IAMP = sortOrder == "asc" ? IAMP.OrderBy(p => p.MAJOR_PROGRAM) : IAMP.OrderByDescending(p => p.MAJOR_PROGRAM); break;
case "INVESTMENT_AREA": IAMP = sortOrder == "asc" ? IAMP.OrderBy(p => p.INVESTMENT_AREA) : IAMP.OrderByDescending(p => p.INVESTMENT_AREA); break;
case "VP": IAMP = sortOrder == "asc" ? IAMP.OrderBy(p => p.VP) : IAMP.OrderByDescending(p => p.VP); break;
case "DIRECTOR": IAMP = sortOrder == "asc" ? IAMP.OrderBy(p => p.DIRECTOR) : IAMP.OrderByDescending(p => p.DIRECTOR); break;
}
int pageSize = 15; // number of records shown on page view
int pageNumber = (page ?? 1); // start page number
return View(IAMP.ToPagedList(pageNumber, pageSize)); // uses pagedList method to return correct page values
}
VIEW
@model PagedList.IPagedList<DBFirstMVC.Models.iamp_mapping>
@{
ViewBag.Title = "Index";
}
@using PagedList;
<h2 class="corporate sifr">PA Mapping</h2>
@using (Html.BeginForm())
{
<p>
Show Version: @Html.DropDownList("Versions","All")
<input type = "submit" value = "Go" />
</p>
}
@using (Html.BeginForm())
{
<div class="lefty">
Find by @Html.DropDownList("IAMP_SEARCH","All"): @Html.TextBox("SearchString")
<input type = "submit" value = "Search" />
</div>
}
<div class="righty">
@Html.ActionLink("Add a new PA to the database", "Create")
</div>
<br /><br />
<div>
<div class="lefty">
Page @(Model.PageCount < Model.PageNumber ? 0 : Model.PageNumber)
of @Model.PageCount
@if (Model.HasPreviousPage)
{
@Html.ActionLink("<<", "", new { page = 1, sortOrder = ViewBag.CurrentSort, currentFilter=ViewBag.CurrentFilter, Versions = ViewBag.SelectedVersion })
@Html.Raw(" ");
@Html.ActionLink("< Prev", "", new { page = Model.PageNumber - 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, Versions = ViewBag.SelectedVersion })
}
else
{
@:<<
@Html.Raw(" ");
@:< Prev
}
@if (Model.HasNextPage)
{
@Html.ActionLink("Next >", "", new { page = Model.PageNumber + 1, sortOrder = ViewBag.CurrentSort, currentFilter=ViewBag.CurrentFilter, Versions = ViewBag.SelectedVersion })
@Html.Raw(" ");
@Html.ActionLink(">>", "", new { page = Model.PageCount, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, Versions = ViewBag.SelectedVersion })
}
else
{
@:Next >
@Html.Raw(" ")
@:>>
}
</div>
<div class="righty">
Showing Records @Model.FirstItemOnPage to @Model.LastItemOnPage from @Model.TotalItemCount
</div>
</div>
<table>
<tr>
<th>
@Html.ActionLink("PA", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "PA", Versions = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "PA"){ <img src="../../Images/ico_tablesortoffset_asc.gif" alt = "table sort arrow asc"/>}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "PA"){ <img src="../../Images/ico_tablesortoffset_desc.gif" alt = "table sort arrow desc"/>}
</th>
<th>
@Html.ActionLink("MAJOR PROGRAM", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "MAJOR_PROGRAM", Versions = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "MAJOR_PROGRAM"){ <img src="../../Images/ico_tablesortoffset_asc.gif" alt = "table sort arrow asc" />}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "MAJOR_PROGRAM"){ <img src="../../Images/ico_tablesortoffset_desc.gif" alt = "table sort arrow desc"/>}
</th>
<th>
@Html.ActionLink("INVESTMENT AREA", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "INVESTMENT_AREA", Versions = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "INVESTMENT_AREA"){ <img src="../../Images/ico_tablesortoffset_asc.gif" alt = "table sort arrow asc"/>}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "INVESTMENT_AREA"){ <img src="../../Images/ico_tablesortoffset_desc.gif" alt = "table sort arrow desc" />}
</th>
<th>
@Html.ActionLink("Version", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "VERSION", Versions = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "VERSION"){ <img src="../../Images/ico_tablesortoffset_asc.gif" alt = "table sort arrow asc" />}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "VERSION"){ <img src="../../Images/ico_tablesortoffset_desc.gif" alt = "table sort arrow desc"/>}
</th>
<th>
@Html.ActionLink("VP", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "VP", Versions = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "VP"){ <img src="../../Images/ico_tablesortoffset_asc.gif" alt = "table sort arrow asc"/>}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "VP"){ <img src="../../Images/ico_tablesortoffset_desc.gif" alt = "table sort arrow desc"/>}
</th>
<th>
@Html.ActionLink("DIRECTOR", "", new { sortOrder = ViewBag.currentOrder == "asc" ? "desc" : "asc", sortField = "DIRECTOR", Versions = ViewBag.SelectedVersion })
@if (ViewBag.currentOrder == "asc" && ViewBag.CurrentField == "DIRECTOR"){ <img src="../../Images/ico_tablesortoffset_asc.gif" alt = "table sort arrow asc"/>}
@if (ViewBag.currentOrder == "desc" && ViewBag.CurrentField == "DIRECTOR"){ <img src="../../Images/ico_tablesortoffset_desc.gif" alt = "table sort arrow desc"/>}
</th>
<th></th>
</tr>
@{
var row_class = "odd";
}
@foreach (var item in Model) {
row_class = row_class == "odd"? "even" : "odd";
<tr class="@row_class">
<td>
@Html.DisplayFor(modelItem => item.PA)
</td>
<td>
@Html.DisplayFor(modelItem => item.MAJOR_PROGRAM)
</td>
<td>
@Html.DisplayFor(modelItem => item.INVESTMENT_AREA)
</td>
<td>
@Html.DisplayFor(modelItem => item.VERSION)
</td>
<td>
@Html.DisplayFor(modelItem => item.VP)
</td>
<td>
@Html.DisplayFor(modelItem => item.DIRECTOR)
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { id=item.PA}) |
@Html.ActionLink("Delete", "Delete", new { id = item.PA})
</td>
</tr>
}
</table>
<div>
<div class="lefty">
Page @(Model.PageCount < Model.PageNumber ? 0 : Model.PageNumber)
of @Model.PageCount
@if (Model.HasPreviousPage)
{
@Html.ActionLink("<<", "", new { page = 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, Versions = ViewBag.SelectedVersion })
@Html.Raw(" ");
@Html.ActionLink("< Prev", "", new { page = Model.PageNumber - 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, Versions = ViewBag.SelectedVersion })
}
else
{
@:<<
@Html.Raw(" ");
@:< Prev
}
@if (Model.HasNextPage)
{
@Html.ActionLink("Next >", "", new { page = Model.PageNumber + 1, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, Versions = ViewBag.SelectedVersion })
@Html.Raw(" ");
@Html.ActionLink(">>", "", new { page = Model.PageCount, sortOrder = ViewBag.CurrentSort, currentFilter = ViewBag.CurrentFilter, Versions = ViewBag.SelectedVersion })
}
else
{
@:Next >
@Html.Raw(" ")
@:>>
}
</div>
<div class="righty">
Showing Records @Model.FirstItemOnPage to @Model.LastItemOnPage from @Model.TotalItemCount
</div>
</div>
<br /><br />
<div>
@Html.ActionLink("Download in Excel Format", "PaExcelOutput", new {Versions = ViewBag.SelectedVersion, currentFilter = ViewBag.currentFilter})
</div>
You could use Dynamic Query which allows you to use dynamic column names.