displaying a generic list two list items per row w

问题:

I have a generic list of objects that's passed to a view. Currently, each list item is displayed to the user row-by-row:

@foreach (var result in Model.SearchResults)
{
    result.Address.TownCity
    // ...
}

So each list item is displayed in its own row. Aesthetically this doesn't look the best, as there's quite a lot of white space left over.

What I want to do is something like this:

row 1 | list item 1 | list item 2

row 2 | list item 3 | list item 4

and so on.....

Is this something I have to do server-side i.e. put half of my list into another list and in the view have two foreach loops - each one filling a column, row-by-row? Or is there anyway this can be done in the view using razor?

回答1:

You can do this to group each set of rows into 'batches' and then loop through each item in the batch.

@{
    var batches = Model.SearchResult
        .Select((x, i) => new { x, i })
        .GroupBy(p => (p.i / 2), p => p.x);
}
@foreach(var row in batches)
{
    <span>Row @row.Key</span>
    @foreach(var item in row)
    {
        <span>| @item.Address.TownCity</span>
    }
}

Alternatively you can use this; it's simpler, though a bit less elegant

@{
    var resultArray = Model.SearchResult.ToArray(); // only necessary if SearchResult is not a list or array
}
@for(var i = 0; i < resultArray.Length; i++)
{
    var item = resultArray[i];
    if (i % 2 == 0)
    {
        <span>Row @(i / 2)</span>
    }
    <span>| @item.Address.TownCity</span>
}

回答2:

This is very easy to do in CSS without adding additional load and complexity to your code

See this fiddle: http://jsfiddle.net/taBec/

@foreach (var result in Model.SearchResults)
{
    <div class="box">@result.Address.TownCity</div>
}

Then in CSS:

.box { width: 150px; float: left; height:25px}

Your app runs faster and your design is responsive and fluid. I hope this helps.