Question

我的asp.net应用程序出了问题。这是我的index.html

＆＃13;

@using BricksBreaking;
@model FieldModel



@{
    ViewData["Title"] = "Game";
}

<h2>Index</h2>

<table class="field">
    @for (int row = 0; row < Model.Field.RowCount; row++)
    {
        <tr>
            @for (int column = 0; column < Model.Field.ColumnCount; column++)
            {
                var tile = Model.Field.Tiles[row, column];

                if (tile == null)
                {
                    <td />
                }
                else
                {

                    if (Model.Field.Tiles[row, column].Color == TileColor.Red) {
                    <td>
                        <a href='/BricksBreaking/Click?r=@row?c=@column'>
                            <img src='/images/cervena.png' />
                        </a>
                        </td>
                    }if(Model.Field.Tiles[row, column].Color == TileColor.Yellow)
                    {
                    <td>
                        <a href='/BricksBreaking/Click?r=@row?c=@column'>
                            <img src='/images/zlta.png' />
                        </a>
                    </td>

                    }if(Model.Field.Tiles[row, column].Color == TileColor.Blue)
                    {
                    <td>
                        <a href='/BricksBreaking/Click?r=@row?c=@column'>
                            <img src='/images/modra.png' />
                        </a>
                    </td>

                    }
                }
            }
        </tr>
    }
        
</table>

＆＃13;

这是我的控制器

＆＃13;

    public class BricksBreakingController : Controller
    {
        ScoreServiceDatabase scoreService = new ScoreServiceDatabase();

        public IActionResult Index()
        {
            var field = new Field(9, 9, 5);
            HttpContext.Session.SetObject("field", field);
            var model = new FieldModel
            { Field = field, Scores = scoreService.GetTopScores() };
            return View(model);
        }

        public IActionResult Click(int r, int c)
        {
            var field = HttpContext.Session.GetObject("field") as Field;
            field.ClickTile(r,c);
            HttpContext.Session.SetObject("field", field);
            var model = new FieldModel
            { Field = field, Scores = scoreService.GetTopScores() };
            return View("Index", model);
        }


    }
}

＆＃13;

问题是。总是在这一行

<a href='/BricksBreaking/Click?r=@row?c=@column'>

传递给控制器中的函数单击的参数始终为0.无论我是否写了类似这样的内容

<a href='/BricksBreaking/Click?r=2?c=2'>

总会有0。

有人可以帮我这个吗？我是.NET的新手。

Answer 1

您只需要在第一个参数之前写一个?。第一个参数之后的每个参数都需要&

<a href='/BricksBreaking/Click?r=2&c=2'>

asp.net参数始终为null

1 个答案: