.net打印*三角形
aspx代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="abc.aspx.cs" Inherits="abc" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server" Style="position: relative"></asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Style="position: relative"
Text="Button" /><br />
<br />
<br />
<br />
<asp:Label ID="Label1" runat="server" Style="position: relative" Text="Label"></asp:Label>
</div>
</form>
</body>
</html>
cs 代码:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class abc : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
Label1.Text = "";
int n = Convert.ToInt32(TextBox1.Text.Trim());
for (int i = 1; i <= n; i++)
{
//输出空格
for (int j = 1; j <= n - i; j++)
{
Label1.Text += " ";
}
//输出*
for (int j = 1; j <= 2 * i - 1; j++)
{
Label1.Text += "*";
}
//输出换行符
Label1.Text += "<br>";
}
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show("请输入数字!");
}
}
}
效果:
