Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

C# ASP.NET MVC Forms Improving Our Form Drop Down Lists

Posted by Larry Singleton
Larry Singleton
18,946 Points

ASP.NET MVC FORMS -AGAIN

Link to question: https://teamtreehouse.com/library/aspnet-mvc-forms/improving-our-form/drop-down-lists

Question:

In Report.cshtml update the "Department" field to use a drop down list.

    Replace the Html.TextBoxFor method call with a call to the Html.DropDownListFor HTML helper method.
    Assume that a collection of select list items (of type SelectList) is available via the ViewBag.DepartmentsSelectListItems property.

Code Provided

@model IssueReporter.Models.Issue

@{
    ViewBag.Title = "Report an Issue";
}

<h2>@ViewBag.Title</h2>

@using (Html.BeginForm())
{
    <div>
        @Html.LabelFor(m => m.Name)
        @Html.TextBoxFor(m => m.Name)
    </div>

    <div>
        @Html.LabelFor(m => m.Email)
        @Html.TextBoxFor(m => m.Email)
    </div>

    <div>
        @Html.LabelFor(m => m.DepartmentId)
        @Html.TextBoxFor(m => m.DepartmentId)
    </div>

    <div>
        @Html.LabelFor(m => m.Severity)
        @Html.TextBoxFor(m => m.Severity)
    </div>

    <div>
        @Html.LabelFor(m => m.Reproducible)
        @Html.TextBoxFor(m => m.Reproducible)
    </div>

    <div>
        @Html.LabelFor(m => m.DescriptionOfProblem)
        @Html.TextAreaFor(m => m.DescriptionOfProblem)
    </div>

    <button type="submit">Save</button>
}

My attempt:

@model IssueReporter.Models.Issue

@{
    ViewBag.Title = "Report an Issue";
}

<h2>@ViewBag.Title</h2>

@using (Html.BeginForm())
{
    <div>
        @Html.LabelFor(m => m.Name)
        @Html.TextBoxFor(m => m.Name)
    </div>

    <div>
        @Html.LabelFor(m => m.Email)
        @Html.TextBoxFor(m => m.Email)
    </div>

    <div>
        @Html.LabelFor(m => m.DepartmentId)
        @Html.DropDownListFor(m => m.DepartmentId, (SelectList)ViewBag.DepartmentIdSelectListItems, new { @class = "form-control"})
    </div>

    <div>
        @Html.LabelFor(m => m.Severity)
        @Html.TextBoxFor(m => m.Severity)
    </div>

    <div>
        @Html.LabelFor(m => m.Reproducible)
        @Html.TextBoxFor(m => m.Reproducible)
    </div>

    <div>
        @Html.LabelFor(m => m.DescriptionOfProblem)
        @Html.TextAreaFor(m => m.DescriptionOfProblem)
    </div>

    <button type="submit">Save</button>
}

Error Message on this attempt:

Did you replace the 'DepartmentId' field's Html.TextBoxFor method call with a call to the Html.DropDownListFor HTML helper method?
Report.cshtml 
@model IssueReporter.Models.Issue

@{
    ViewBag.Title = "Report an Issue";
}

<h2>@ViewBag.Title</h2>

@using (Html.BeginForm())
{
    <div>
        @Html.LabelFor(m => m.Name)
        @Html.TextBoxFor(m => m.Name)
    </div>

    <div>
        @Html.LabelFor(m => m.Email)
        @Html.TextBoxFor(m => m.Email)
    </div>

    <div>
        @Html.LabelFor(m => m.DepartmentId)
        @Html.DropDownListFor(m => m.DepartmentId, (SelectList)ViewBag.DepartmentIdSelectListItems, new { @class = "form-control"})
    </div>

    <div>
        @Html.LabelFor(m => m.Severity)
        @Html.TextBoxFor(m => m.Severity)
    </div>

    <div>
        @Html.LabelFor(m => m.Reproducible)
        @Html.TextBoxFor(m => m.Reproducible)
    </div>

    <div>
        @Html.LabelFor(m => m.DescriptionOfProblem)
        @Html.TextAreaFor(m => m.DescriptionOfProblem)
    </div>

    <button type="submit">Save</button>
}

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

It looks like you used the wrong property name.

The challenge says that a list of items "is available via the ViewBag.DepartmentsSelectListItems property", but you wrote "ViewBag.DepartmentIdSelectListItems" instead.