Question

我希望int countHarry每当用户单击“ Vote Harry”按钮时都将递增1。输出将被写入“ data.txt”中。但是，我的data.txt仅将值显示为1。谢谢。

这是一个.cshtml文件。

当前输出：Harry，1 预期输出：Harry，3（每次点击时，int值都会增加）

@{
    var result = "";
    int countJohn = 1;
    int countHarry = 1;

    if (IsPost)
    {
        var dataFile = Server.MapPath(@"~/App_Data/data.txt");

        if (Request["submit"] == "Vote Harry")
        {

            //var harry = Request["Harry"];

            var userData = "Harry" + "," + countHarry + Environment.NewLine;

            File.AppendAllText(@dataFile, userData);

            // countHarry += countHarry;  does not increases the count inside  .txt at all

            result = "Information saved.";
        }

        else if (Request["submit"] == "Vote John")
        {

            //var john = Request["John"];

            var userData = "John" + "," + (Int32.Parse("1")) + Environment.NewLine;

            File.AppendAllText(@dataFile, userData);

            result = "Information saved.";

            countJohn += 1;
        }
    }
 }

<!DOCTYPE html>
<html>
<head>
    <title>Elections</title>
</head>
<body>
    <form id="form1" method="post">
        <div>
            <table>
                <tr>
                    <td>Harry</td>
                    <td><input id="Harry" name="submit" type="submit" value="Vote Harry"/></td>

                </tr>
                <tr>
                    <td>John</td>
                    <td><input id="John" name="submit" type="submit" value="Vote John" /></td>
                </tr>
                <tr>
                    <td>Bryan</td>
                    <td><input id="Bryan" name="submit" type="submit" value="Vote Bryan" /></td>
                </tr>
                <tr>
                    <td>Jack</td>
                    <td><input id="Jack" name="submit" type="submit" value="Vote Jack" /></td>
                </tr>
            </table>
        </div>
        <div>
            @if (result != "")
            {
                <p>Result: @result</p>
            }
        </div>
    </form>
</body>
</html>

Answer 1

我想您只需要在此处定义countHarry：

@{
var result = "";
int countJohn = 1;
int countharry = 1;

现在，由于它是“全局”的，因此您可以在需要的地方到达杂货铺。

每当单击同一按钮时如何增加值？

1 个答案: