MVC 3 列表的字符串截断

@model IEnumerable<MvcMusicStore.Models.Album>
@helper Truncate(string input, int length)
{
if (input.Length <= length) { @input
} else { @input.Substring(0, length)<text>...</text>
}
}
@{
ViewBag.Title = "Index"; }
<h2>Index</h2>
<p> @Html.ActionLink("Create New", "Create")
</p>
<table>
<tr>
<th>
Genre
</th>
<th>
Artist
</th>
<th>
Title
</th>
<th>
Price
</th>
<th></th>
</tr>
@foreach (var item in Model) {
<tr>
<td> @Html.DisplayFor(modelItem => item.Genre.Name)
</td>
<td> @Truncate(item.Artist.Name, 25)
</td>
<td> @Truncate(item.Title, 25)
</td>
<td> @Html.DisplayFor(modelItem => item.Price)
</td>

<td> @Html.ActionLink("Edit", "Edit", new { id=item.AlbumId }) | @Html.ActionLink("Details", "Details", new { id=item.AlbumId }) | @Html.ActionLink("Delete", "Delete", new { id=item.AlbumId })
</td>
</tr>
}
</table>