C＃代码块中的Razor语法

Question

Trying to populate table data with:

        @foreach (var mc in Model.McList)
        {
            <tr>
                <td>
                    @(@mc.Amount != null ? @mc.Amount @@ @mc.Price : null)
                </td>
            </tr>
        }

but stuck in razor syntax errors:

expect :

expect )

or ambiguous invocation: void Write

Amount is int? nullable type.

@(@mc.Amount != null ? @mc.Amount : null) //works only with one property
@if (@mc.Amount != null) {@mc.Amount <text>@@</text> @mc.Price} //works
@if (@mc.Amount != null) {@mc.Amount @@ @mc.Price} //error
@if (@mc.Amount != null) {@mc.Amount @:@@ @mc.Price} //error

is it shorter way to check for null value without if?

Answer 1

I don't think that's possible. If you must do that in one line, the closest I get is:

@(@mc.Amount != null ? string.Format("{0} @ {1}", mc.Amount, mc.Price) : null)

I'd probably never do that myself!

Answer 2

I think you're trying to make something that looks like this:

5 @ 20

If so, you need to keep in mind that everything between @( and ) is pure C# code; what you need to do is something like this:

@(mc.Amount != null ? string.Format("{0} @ {1}", mc.Amount, mc.Price) : "")