Why I can't find my uri in Web Api? - asp.net

Question

Here is my PUT code in Web Api. (ASP.NET MVC 6).
public class VendorManagementController : ApiController
{
// GET
[Microsoft.AspNet.Mvc.HttpGet]
public dynamic GetVendors(string sidx, string sortOrder, int page, int rows,int pkey)
{
var vendors = _vendorRespository.GetAllVendors().AsQueryable();
var pageIndex = Convert.ToInt32(page) - 1;
var pageSize = rows;
var totalRecords = vendors.Count();
var totalPages = (int)Math.Ceiling((float)totalRecords / (float)pageSize);
if (sidx != null)
{
vendors = sortOrder == "asc" ? vendors.OrderBy(sidx) : vendors.OrderBy(sidx + " descending");
}
else
{
vendors = vendors.OrderBy(x => x.pkey);
}
vendors = vendors.Skip(pageIndex * pageSize).Take(pageSize);
return new
{
total = totalPages,
page = page,
records = totalRecords,
rows = (from vendor in vendors
select new
{
cell = new string[]
{
vendor.pkey.ToString(),
vendor.Company,
vendor.ContactName,
vendor.ContactPhone,
vendor.UserName,
Encoding.UTF8.GetString(vendor.UserKey),
vendor.Active.ToString(),
vendor.FacilityId.ToString(),
vendor.ClientID.ToString(),
vendor.PhotoURL,
vendor.PushToGP.ToString()
}
}).ToArray()
};
}
In the view, I have:
jQuery(gridSelector).jqGrid({
url: API_URL + 'GetVendors',
datatype: 'json',
mtype: 'GET',
height: 'auto',
colNames: ['pkey', 'Company', 'ContactName', 'ContactPhone', 'UserName', 'UserKey', 'Active', 'FacilityId', 'ClientId', 'PhotoURL', 'PushToGP'],
colModel: [
{ name: 'pkey', index: 'pkey', width: 50, hidden: true },
{ name: 'Company', width: 120 },
{ name: 'ContactName', width: 110 },
{ name: 'ContactPhone', width: 120 },
{ name: 'UserName', align: "right", width: 90 },
{ name: 'UserKey', align: "right", width: 120, hidden: true },
{ name: 'Active', width: 50, edittype: "checkbox", editoptions: { value: "True:False" }, unformat: aceSwitch },
{ name: 'FacilityId', align: "right", width: 100, formatter: "integer" },
{ name: 'ClientID', align: "right", width: 100, formatter: "integer" },
{ name: 'PhotoURL', align: "right", width: 80 },
{ name: 'PushToGP', align: "right", width: 80, edittype: "checkbox", editoptions: { value: "True:False" }, unformat: aceSwitch }
],
cmTemplate: { autoResizable: true, editable: true },
rowNum: 10,
rowList: [10, 20, 30],
pager: pagerSelector,
sortname: 'company',
sortorder: "asc",
viewrecords: true,
jsonreader: {
root: "rows",
page: "page",
total: "total",
records:"records"
},
caption: "Vendor Managerment"
});
However I inspect the page, I find a 500 error. See the image.
And in Home Controller:
public class HomeController : Controller
{
public IActionResult Index()
{
return View();
}
public IActionResult VendorManagement()
{
return View();
}
In Startup.cs
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
// Configure the HTTP request pipeline.
// Add the following to the request pipeline only in development environment.
if (env.IsDevelopment())
{
app.UseBrowserLink();
app.UseErrorPage();
}
else
{
// Add Error handling middleware which catches all application specific errors and
// send the request to the following path or controller action.
app.UseErrorHandler("/Home/Error");
}
// Add static files to the request pipeline.
app.UseStaticFiles();
// Add MVC to the request pipeline.
app.UseMvc(routes =>
{
routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
// Uncomment the following line to add a route for porting Web API 2 controllers.
// routes.MapWebApiRoute("DefaultApi", "api/{controller}/{id?}");
});
}
}
I am new to ASP.NET Web Api. Is there anything wrong on my mapping? Why I get 500 error?

Answer 1

As per jqGrid documentation, it requires following default JSON format,
{
"total": "xxx",
"page": "yyy",
"records": "zzz",
"rows" : [
{"id" :"1", "cell" :["cell11", "cell12", "cell13"]},
{"id" :"2", "cell":["cell21", "cell22", "cell23"]},
...
]
}
If I understand your code correctly then your method should return JSON result
Please try to modify code like this and see if it helps,
I have added id = vendor.pkey
var result = new
{
total = totalPages,
page = page,
records = totalRecords,
rows = (from vendor in vendors
select new
{
id = vendor.pkey,
cell = new string[]
{
vendor.pkey.ToString(),
vendor.Company,
vendor.ContactName,
vendor.ContactPhone,
vendor.UserName,
Encoding.UTF8.GetString(vendor.UserKey),
vendor.Active.ToString(),
vendor.FacilityId.ToString(),
vendor.ClientID.ToString(),
vendor.PhotoURL,
vendor.PushToGP.ToString()
}
}).ToArray()
};
return Json(result, JsonRequestBehavior.AllowGet);