User-471172601 posted
Hello everyone!
I am working on a MVC Web Application where users can createa account, login, post new announcements etc and i have the next problem:
I have a page /ViewAds where i can see all announcements and a search bar. The problem is when i search something i get error: 'Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index'.
Here is the controller for ViewAds:
public ActionResult ViewAds(string searchString, int? page)
{
ViewBag.Message = "Lista tuturor anunturilor";
List<AdViewModel> ads = new List<AdViewModel>();
List<AdViewModel> data = new List<AdViewModel>();
if(!string.IsNullOrEmpty(searchString))
{
data = SearchByFilters(searchString);
}
else
{
data = LoadAd();
}
int pageSize = 3;
int pageNumber = (page ?? 1);
foreach (var row in data)
{
List<string> imgData = LoadImageUrl(row.Id);
ads.Add(new AdViewModel
{
Id = row.Id,
Title = row.Title,
Description = row.Description,
PublishDate = row.PublishDate,
Location = row.Location,
Status = row.Status,
PhotoUrl = imgData
});
}
@ViewBag.nrRez = ads.Count();
return View(ads.ToPagedList(pageNumber, pageSize));
}
Here is the view:
@using (Html.BeginForm("ViewAds", "Ad", FormMethod.Get))
{
<p>
Find by name: @Html.TextBox("SearchString")
<input type="submit" value="Search" />
</p>
}
@foreach (var item in Model)
{
<div class="col-lg-4 col-sm-6 mb-30">
<div class="product-card mx-auto mb-3">
<div class="product-card-body">
<h5 class="product-title">@Html.ActionLink(@Html.DisplayFor(modelItem => item.Title).ToString(), "ViewAdDetails", "Ad", new { id = @Html.DisplayFor(modelItem => item.Id) }, null)</h5>
@*<h5 class="product-title"><a href="@Url.Action("ViewAdDetails", "Ad", new { id = @Html.DisplayFor(modelItem => item.Id) }) ">@Html.DisplayFor(modelItem => item.Title)</a></h5>*@
</div>
<a class="product-thumb" href="@Url.Action("ViewAdDetails", "Ad", new { id = @Html.DisplayFor(modelItem => item.Id) })">
<img src="@Html.DisplayFor(modelItem => item.PhotoUrl[0])" alt="Product Thumbnail" class="cover-img">
</a>
<div style="text-align:center;">
<span class="product-price">
<i class="fas fa-map-marker-alt"></i>
@Html.DisplayFor(modelItem => item.Location)
</span>
<span class="product-meta"><i class="far fa-calendar-alt"></i> @Html.DisplayFor(modelItem => item.PublishDate)</span>
</div>
<div class="product-buttons-wrap">
<div class="product-buttons">
<div class="product-button"><a href="#"><i class="fa fa-heart"></i></a></div>
<div class="product-button"><a href="#"><i class="fas fa-share-alt-square"></i></a></div>
</div>
</div>
</div>
</div>
}
If i type a text in searchbox and there are no announcements containig this text it will show me there are no announcements. But, if there will be some announcements containing that text i will get the error.
I have tryed to use @for (int i = 0; i < ViewBag.nrRez; i++)
instead foreach, but i get the same error. But, if i write 'manually' in view, to show me Model[0].Property it works.
Does anybody have any idea why? I am currently working on that problem for a few hours...
