C# winform 消息框
一、
1、语法
MessageBox.show();
注意:有返回值,返回值需要ToString(),根据返回值,判断选的那个按钮
2、案例
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApp { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { DialogResult dialogResult = MessageBox.Show("测试对话消息框!", "测试测试", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1); string result = dialogResult.ToString(); if (result == "Yes") { MessageBox.Show("选择\"是\"按钮", "系统提示1", MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1); } else if (result == "No") { MessageBox.Show("选择\"否\"按钮", "系统提示2", MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1); } else { MessageBox.Show("选择\"取消\"按钮", "系统提示3", MessageBoxButtons.OK, MessageBoxIcon.None, MessageBoxDefaultButton.Button1); } } } }