.net中if和else的使用

最新推荐文章于 2023-01-14 08:00:13 发布

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此博客展示了一个使用.NET和C#实现的猜数字游戏代码。通过Random类生成1 - 10的随机数，用户从下拉列表选择猜测数字提交，程序会根据用户输入判断猜测结果，给出过高、过低或正确的提示。

<%@ Page Language="c#" %>
<script runat="server">

void Page_Load()
{
int intNumber, intGuess;
Random r = new Random();
intNumber = Convert.ToInt32(r.Next(10)) + 1;

if (Page.IsPostBack) {
intGuess = Convert.ToInt32(Guess.SelectedItem.Value);

if (intGuess > intNumber) {
Message.Text = "<BR><BR>Guess is too high<BR>Try again, it was "
+ intNumber;
}

if (intGuess < intNumber) {
Message.Text = "<BR><BR>Guess is too low<BR>Try again, it was "
+ intNumber;
}

if (intGuess == intNumber) {
Message.Text = "<BR><BR>Guess is correct!";
}
}
}

</script>
<html>
<head>
</head>
<body>
<form runat="server">
What number am I thinking of?
<asp:dropdownlist id="Guess" runat="server">
<asp:listitem>1</asp:listitem>
<asp:listitem>2</asp:listitem>
<asp:listitem>3</asp:listitem>
<asp:listitem>4</asp:listitem>
<asp:listitem>5</asp:listitem>
<asp:listitem>6</asp:listitem>
<asp:listitem>7</asp:listitem>
<asp:listitem>8</asp:listitem>
<asp:listitem>9</asp:listitem>
<asp:listitem>10</asp:listitem>
</asp:dropdownlist>
<br />
<br />
<input type="submit" value="Submit guess" />
<asp:Label id="Message" runat="server"></asp:Label>
</form>
</body>
</html>