MVC Checkbox List

Question

I just wrote perhaps the ugliest bit of MVC code in existence. It is:

<table>    
<tr>
<% 
    int i = 0;
    foreach(Thyla.Models.Tag tag in this.Model)
    {
        i += 1;
%>
<td>
<span>
    <input type="checkbox" name="TagSelector" id='<%= tag.TagName%>' value='<%= tag.TagName%>' />
    <label for="<%= tag.TagName%>" title="<%= tag.TagName%>"><%= tag.TagName%></label>
</span>
</td>

        <%if (i % 5 == 0){%>
        </tr><tr>
        <%} %>
    <%} %>
<% if (i % 5 != 0){%></tr><%} %>
</table>

What is the canonical approach to making a checkbox list with a specified number of columns in ASP.NET MVC?

I love the preemptive admission of guilt for the ugly code.

JustinStolle
– JustinStolle

2010-05-27 04:48:48 +00:00
Commented May 27, 2010 at 4:48 — JustinStolle
– JustinStolle, Commented May 27, 2010 at 4:48

griegs · Accepted Answer · 2010-05-27 04:49:56Z

Does it really need to be 5? I ask because each tag will be a different width so it'll look ragged anyway. And if you have 5 long tags next to each other they may bleed into the space reserved for other things which is why I think you're saying make it 5 columns.

You you could end up with a tag of vege appearing over a tag called vegetable-patch. Then there would be a huge gap between vege and it's nect column. looks a little odd.

I used a free one. Source included here though I forget where it's from.

Hope this helps.

This is the Helper

public static class MVCTagList
{
    public static string TagList(this HtmlHelper helper, IEnumerable<String> tagListItems, object htmlAttributes)
    {
        StringBuilder TagListMarkup = new StringBuilder();

        TagListMarkup.Append("<ul");
        if (htmlAttributes != null) TagListMarkup.Append(" " + htmlAttributes.ToAttributeList());
        TagListMarkup.Append(">");

        foreach (string tagListItem in tagListItems)
        {
            TagListMarkup.Append("<li>");
            TagListMarkup.Append(String.Format("<a href='/Articles/?tag={0}'>{0}</a>", tagListItem));
            TagListMarkup.Append("</li> ");
        }

        TagListMarkup.Append("</ul>");

        return TagListMarkup.ToString();
    }
}

This is the HTML

<div style="width:450px; margin-left:50px; ">
    <%
        List<String> TagListItems = new List<string>();
        foreach (var tag in Model)
            TagListItems.Add(tag.keyword1);
    %>
    <%= Html.TagList( TagListItems.AsEnumerable(), new { @class="TagList" })%>
</div>

And the CSS

.TagList { margin: 0 0 0 0; padding: 0 0 0 0; }
.TagList li { display:inline; border:1px solid; background-color:#316AC5; margin-left:3px; padding: 3px 3px 3px 3px; line-height:2em;}
.TagList li a { text-decoration:none; color: white; font-size:85%; white-space:nowrap; }

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