The last walkthrough in this section will demonstrate you how to work with related data.
The first step is to modify the Create Car view to display a drop-down with all available categories from the database. Open the Create view for the Car controller.
Replace the following code:
| ASP.NET - C# |
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@Html.EditorFor(model => model.CategoryID) |
| ASP.NET - VB.NET |
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@Html.EditorFor(Function(model) model.CategoryID) |
With this one:
| ASP.NET - C# |
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@Html.DropDownList( "CategoryId", String.Empty ) |
| ASP.NET - VB.NET |
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@Html.DropDownList( "CategoryId", String.Empty ) |
Open the CarController and navigate to the first Create method. Add the following code.
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public ActionResult Create()
{
this.ViewData.Add( "CategoryID", new SelectList(
this.dbContext.Categories.ToList(), "CategoryID", "CategoryName" ) );
return View();
} |
| VB.NET |
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Function Create() As ActionResult
Me.ViewData.Add("CategoryID", New SelectList(Me.dbContext.Categories.ToList(), "CategoryID", "CategoryName"))
Return View()
End Function |
Now, when you run your application and try to add a new Car, you will be able to select an existing category from the drop-down.