摘要:
效果图:代码:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;namespace Example54{ public partial class Form1 : Form { public Form1() ... 阅读全文
摘要:
效果图:代码:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace Example53{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } ... 阅读全文
摘要:
效果图:代码:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Globalization;namespace Example51{ public partial class Form1 : Form { public Form1() { Ini... 阅读全文
摘要:
效果图:原理:在所有要丢失精度的小数位中加5,大于10进位代码:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace Example48{ public partial class Form1 : Form { public Form1() { Initi... 阅读全文
摘要:
TryParse方法首先会尝试将字符串转换为指定数值类型,如果转换成功 则 返回 True 并对参数中变量赋值。 否则 返回False 语法如下:double.TryParse(string str, out double result);using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;name 阅读全文
摘要:
效果图:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace Example46{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } pr... 阅读全文