学习记录
this.Size = new Size(600, 400);
this.BackColor = Color.Red;
this.ForeColor = Color.Red;
label1.Location = new Point(10, 100);
label1.BackColor = Color.Red;
label1.Text = "";
this.Cursor = Cursors.Default;
this.BackgroundImage = new Bitmap("
using System;
using System.Linq;
namespace Test1_7
{
class Program
{
static void Main(string[] args)
{
int i;
string s_ident;
char ch = Convert.ToChar("\0");
Console.WriteLine("请输入15位身份证号码：");
s_ident = Console.ReadLine();
if (s_ident.Length != 15)
{
Console.WriteLine("号码格式不正确");
}
else
{
for (i = 0; i < 15; i++)
{
ch = s_ident.ElementAtOrDefault(i);
if (!char.IsNumber(ch))
{
Console.WriteLine("号码格式不正确");
break;
}
if (i == 14)
{
if (ch % 2 == 0)
{
Console.WriteLine("性别为女");
break;
}
else
{
Console.WriteLine("性别为男");
break;
}
}
}
}
Console.WriteLine("按回车键结束");
Console.ReadLine();
}
}
}
using System;
using System.Linq;
namespace Test1_8
{
class Program
{
static void Main(string[] args)
{
int i;
string s_ident;
char ch = Convert.ToChar("\0");
Console.WriteLine("请输入十八位身份证号码：");
s_ident = Console.ReadLine();
if (s_ident.Length != 18)
{
Console.WriteLine("号码格式不正确");
}
else
{
for (i = 0; i < s_ident.Length; i++)
{
ch = s_ident.ElementAtOrDefault(i);
if (i <= 16)
{
if (!char.IsNumber(ch)){
Console.WriteLine("号码格式1不正确");
break;
}
/*if (ch <= '0' && ch >= '9')
{
Console.WriteLine("号码格式不正确");
}*/
}
else if(i==17)
{
if (!char.IsNumber(ch)&&ch != 'X' )
{
Console.WriteLine("号码格式2不正确");
break;
}
if (ch % 2 == 0 && char.IsNumber(ch)) //ch >= '0' && ch <= '9'
{
Console.WriteLine("性别为女");
break;
}
else
{
Console.WriteLine("性别为男");
break;
}
}
}
}
Console.WriteLine("按回车键结束");
Console.ReadLine();
}
}
}
using System;
using System.Linq;
namespace Test1_9
{
class Program
{
static void Main(string[] args)
{
int i;
string s_text;
char ch = Convert.ToChar('\0');
Console.WriteLine("请输入一个字符串");
s_text = Console.ReadLine();
ch=s_text.ElementAtOrDefault(0);
for (i = 0; i < s_text.Length; i++)
{
if(ch< s_text.ElementAtOrDefault(i))
{
ch = s_text.ElementAtOrDefault(i);
}
}
Console.WriteLine("ASCII码最大的字符是：");
Console.WriteLine(ch);
Console.WriteLine("按回车键结束");
Console.ReadLine();
}
}
}
using System;
using System.Linq;
namespace Test1_10
{
class Program
{
static void Main(string[] args)
{
int i;
string s_text;
char ch = Convert.ToChar('\0');
Console.WriteLine("请输入一个字符串");
s_text = Console.ReadLine();
ch=s_text.ElementAtOrDefault(0);
for (i = 0; i < s_text.Length; i++)
{
if(ch> s_text.ElementAtOrDefault(i))
{
ch = s_text.ElementAtOrDefault(i);
}
}
Console.WriteLine("ASCII码最小的字符是：");
Console.WriteLine(ch);
Console.WriteLine("按回车键结束");
Console.ReadLine();
}
}
}
public void SaveInfo(String path)
{
StreamWriter sw = new StreamWriter(path);
sw.WriteLine(textBox1.Text);
sw.WriteLine(textBox2.Text);
sw.WriteLine(dateTimePicker1.Value.ToLongDateString());
sw.WriteLine(textBox3.Text);
sw.WriteLine(comboBox1.SelectedIndex);
sw.WriteLine(textBox4.Text);
sw.Close();
}
public void LoadInfo(String path)
{
StreamReader sr = new StreamReader(path);
textBox1.Text = sr.ReadLine();
textBox2.Text = sr.ReadLine();
dateTimePicker1.Value = DateTime.Parse(sr.ReadLine());
textBox3.Text = sr.ReadLine();
comboBox1.SelectedIndex = Int32.Parse(sr.ReadLine());
textBox4.Text = sr.ReadLine();
sr.Close();
}
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.InitialDirectory = Application.StartupPath;
dlg.Filter = "商品信息文件（*.s72））|*.s72";
if (dlg.ShowDialog() == DialogResult.OK)
{
LoadInfo(dlg.FileName);
}
statusBar1.Panels[0].Text =File.GetLastWriteTime(dlg.FileName).ToString();
}
private void button2_Click(object sender, EventArgs e)
{
SaveFileDialog dlg = new SaveFileDialog();
dlg.InitialDirectory = Application.StartupPath;
dlg.Filter = "商品信息文件（*.s72））|*.s72";
if (dlg.ShowDialog() == DialogResult.OK)
{
SaveInfo(dlg.FileName);
}
}
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.InitialDirectory = Application.StartupPath;
dlg.Filter = "商品信息文件（*.s72））|*.s72";
if (dlg.ShowDialog() == DialogResult.OK)
{
LoadInfo(dlg.FileName);
}
statusBar1.Panels[0].Text = File.GetLastWriteTime(dlg.FileName).ToString();
}
private void button2_Click(object sender, EventArgs e)
{
SaveFileDialog dlg = new SaveFileDialog();
dlg.InitialDirectory = Application.StartupPath;
dlg.Filter = "商品信息文件（*.s72））|*.s72";
if (dlg.ShowDialog() == DialogResult.OK)
{
SaveInfo(dlg.FileName);
}
}
public void LoadInfo(String path)
{
FileStream fs = new FileStream(path,FileMode.Open);
BinaryReader br = new BinaryReader(fs);
textBox1.Text = br.ReadString();
textBox2.Text = br.ReadString();
dateTimePicker1.Value = DateTime.Parse(br.ReadString());
textBox3.Text = br.ReadString();
comboBox1.SelectedIndex = br.ReadInt32();
textBox4.Text = br.ReadString();
br.Close();
fs.Close();
}
public void SaveInfo(String path)
{
FileStream fs = new FileStream(path, FileMode.Create);
BinaryWriter bw = new BinaryWriter(fs);
bw.Write(textBox1.Text);
bw.Write(textBox2.Text);
bw.Write(dateTimePicker1.Value.ToLongDateString());
bw.Write(textBox3.Text);
bw.Write(comboBox1.SelectedIndex);
bw.Write(textBox4.Text);
bw.Close();
fs.Close();
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Test7_11
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void btn_Add_Click(object sender, EventArgs e)
{
if (textBox1.Text.Length > 0 && !listBox1.Items.Contains(textBox1.Text))
{
listBox1.Items.Add(textBox1.Text);
textBox1.Text = "";
}
}
private void btn_Del_Click(object sender, EventArgs e)
{
if (listBox1.SelectedIndex >= 0)
listBox1.Items.RemoveAt(listBox1.SelectedIndex);
}
public void SaveInfo(String path)
{
StreamWriter sw = new StreamWriter(path);
sw.WriteLine(listBox1.Items.Count);
for(int i = 0; i < listBox1.Items.Count; i++)
{
sw.WriteLine(listBox1.Items[i].ToString());
}
sw.Close();
}
public void LoadInfo(String path)
{
listBox1.Items.Clear();
StreamReader sr = new StreamReader(path);
int num = int .Parse( sr.ReadLine());
for(int i = 0; i < num; i++)
{
listBox1.Items.Add(sr.ReadLine());
}
sr.Close();
}
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.InitialDirectory = Application.StartupPath;
ofd.Filter = "好友列表文件(*.s711)|*.s711";
if (ofd.ShowDialog() == DialogResult.OK)
{
LoadInfo(ofd.FileName);
statusBarPanel1.Text = File.GetLastAccessTime(ofd.FileName).ToString();
}
}
private void button2_Click(object sender, EventArgs e)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.InitialDirectory = Application.StartupPath;
sfd.Filter = "好友列表文件(*.s711)|*.s711";
if (sfd.ShowDialog() == DialogResult.OK)
{
SaveInfo(sfd.FileName);
}
}
}
}
/*同心圆*/
/*e.Graphics.DrawEllipse(Pens.Black,40,40,160,160);
e.Graphics.DrawEllipse(Pens.Black, 60, 60, 120, 120);*/
/*第一题网格线*/
/*e.Graphics.DrawString("这是一组网格线", this.Font, Brushes.Black, 90, 20);
e.Graphics.DrawLine(Pens.Black, 0, 80, 300, 80);
e.Graphics.DrawLine(Pens.Black, 0, 160,300, 160);
e.Graphics.DrawLine(Pens.Black, 80, 0, 80, 240);
e.Graphics.DrawLine(Pens.Black, 200, 0, 200, 240);
/*第二题平行线*/
/*e.Graphics.DrawString("平行线", this.Font, Brushes.Black, 10, 20);
e.Graphics.DrawLine(Pens.Red, 120, 180, 160, 40);
e.Graphics.DrawLine(Pens.Blue, 160, 180, 200, 40);
e.Graphics.DrawLine(Pens.Black, 200, 180, 240, 40);*/
/*第三题同心圆*/
/*e.Graphics.DrawString("这是一组同心圆", this.Font, Brushes.Black, 10, 20);
e.Graphics.DrawEllipse(Pens.Black, 40, 40, 160,160);
e.Graphics.DrawEllipse(Pens.Black, 60, 60, 120, 120);
e.Graphics.DrawEllipse(Pens.Black, 80, 80, 80, 80);
e.Graphics.DrawEllipse(Pens.Black, 100, 100, 40, 40);*/
/*第四题实心圆*/
/*e.Graphics.FillEllipse(Brushes.Red, 240, 40, 160, 160);
e.Graphics.FillEllipse(Brushes.Blue, 260, 60, 120, 120);
e.Graphics.FillEllipse(Brushes.Pink, 280, 80, 80, 80);
e.Graphics.FillEllipse(Brushes.Black, 300, 100, 40, 40);*/
/*第五题多边形*/
//三角形
/*e.Graphics.DrawLine(Pens.Red, 50, 100, 20, 150);
e.Graphics.DrawLine(Pens.Red, 20, 150, 80, 150);
e.Graphics.DrawLine(Pens.Red, 80, 150, 50, 100);*/
//四边形
/*e.Graphics.DrawLine(Pens.Red, 100, 100, 100, 150);
e.Graphics.DrawLine(Pens.Red, 100, 150, 150, 150);
e.Graphics.DrawLine(Pens.Red, 150, 150, 150, 100);
e.Graphics.DrawLine(Pens.Red, 150, 100, 100, 100);*/
//五边形
/*e.Graphics.DrawLine(Pens.Red, 220, 100, 190, 120);
e.Graphics.DrawLine(Pens.Red, 190, 120, 200, 150);
e.Graphics.DrawLine(Pens.Red, 200, 150, 240, 150);
e.Graphics.DrawLine(Pens.Red, 240, 150, 250, 120);
e.Graphics.DrawLine(Pens.Red, 250, 120, 220, 100);*/
/*第六题实心*/
// 三角形
/* Point point1 = new Point(50, 100);
Point point2 = new Point(20, 150);
Point point3 = new Point(80, 150);
Point[] pntArr = { point1, point2, point3 };
e.Graphics.DrawPolygon(Pens.Red, pntArr);*///new Pen(Color.Red
// 填充三角形
/*Point point1 = new Point(50, 100);
Point point2 = new Point(20, 150);
Point point3 = new Point(80, 150);
Point[] pntArr1 = { point1, point2, point3 };
e.Graphics.FillPolygon(Brushes.Pink, pntArr1);*/
//四边形
/* Point point4 = new Point(100, 100);
Point point5 = new Point(100, 150);
Point point6 = new Point(150, 150);
Point point7 = new Point(150, 100);
Point[] pntArr = { point4, point5, point6, point7 };
e.Graphics.DrawPolygon(Pens.Red, pntArr);*/
//填充四边形
/*Point point4 = new Point(100, 100);
Point point5 = new Point(100, 150);
Point point6 = new Point(150, 150);
Point point7 = new Point(150, 100);
Point[] pntArr2 = { point4, point5, point6, point7 };
e.Graphics.FillPolygon(Brushes.Pink, pntArr2);*/
//五边形
/* Point point8 = new Point(220, 100);
Point point9 = new Point(190, 120);
Point point10 = new Point(200, 150);
Point point11 = new Point(240, 150);
Point point12 = new Point(250, 120);
Point[] pntArr3 = { point8, point9, point10, point11, point12 };
e.Graphics.DrawPolygon(Pens.SkyBlue, pntArr3); */
// 填充五边形
/*Point point8 = new Point(220, 100);
Point point9 = new Point(190, 120);
Point point10 = new Point(200, 150);
Point point11= new Point(240, 150);
Point point12= new Point(250, 120);
Point[] pntArr3 = { point8, point9, point10,point11,point12};
e.Graphics.FillPolygon(Brushes.SkyBlue, pntArr3);*/
//第七题矩形
/*e.Graphics.DrawRectangle(Pens.Red, 20, 80, 40, 100);
e.Graphics.DrawRectangle(Pens.Red, 80, 100, 100, 40);
e.Graphics.DrawRectangle(Pens.Red, 200, 100, 60, 60);*/
// 第八题填充矩形
/*e.Graphics.FillRectangle(Brushes.Red, 20, 80, 40, 100);
e.Graphics.FillRectangle(Brushes.Red, 80, 100, 100, 40);
e.Graphics.FillRectangle(Brushes.Red, 200, 100, 60, 60);*/
//第九题折线
/* e.Graphics.DrawLine(Pens.Red, 80, 100, 120, 60);
e.Graphics.DrawLine(Pens.Blue, 120, 60, 160, 100);
e.Graphics.DrawLine(Pens.Black, 160, 100, 200, 60);
e.Graphics.DrawLine(Pens.Black, 200, 60, 240, 100);
e.Graphics.DrawLine(Pens.Black, 240, 100, 280, 60);*/
//e.Graphics.DrawLines(Pens.Black, new Point[] { new Point(20, 100), new Point(60, 60), new Point(100, 100), new Point(140, 60), new Point(180, 100), new Point(220, 60), new Point(260, 100)});
//e.Graphics.DrawLines(Pens.Black, new Point[] { new Point(20, 100), new Point(60, 60), new Point(100, 100), new Point(140, 60), new Point(180, 100), new Point(220, 60), new Point(260, 100), new Point(20, 100) });
/*Point point8 = new Point(80, 100);
Point point9 = new Point(120, 60);
Point point10 = new Point(160, 100);
Point point11 = new Point(200, 60);
Point point12 = new Point(240, 100);
Point point13 = new Point(280, 60);
Point[] pntArr3 = { point8, point9, point10, point11, point12 , point13 };
e.Graphics.DrawLines(Pens.Black, pntArr3);*/
//第十题
/*Point point8 = new Point(80, 100);
Point point9 = new Point(120, 60);
Point point10 = new Point(160, 100);
Point point11 = new Point(200, 60);
Point point12 = new Point(240, 100);
Point point13 = new Point(280, 60);
Point point14 = new Point(320, 60);
Point point15 = new Point(80, 100);
Point[] pntArr3 = { point8, point9, point10, point11, point12, point13, point14, point15};
e.Graphics.DrawLines(Pens.Black, pntArr3); */
//第十一题 圆弧
/*e.Graphics.DrawArc(Pens.Pink, 160, 160, 160, 160, 20, 100);
e.Graphics.DrawArc(Pens.Blue, 160, 160, 160, 160, 140, 100);
e.Graphics.DrawArc(Pens.Pink, 160, 160, 160, 160, 260, 100);*/
//第十一题 空心扇形
/*e.Graphics.DrawPie(Pens.Pink, 160, 160, 160, 160, 20, 100);
e.Graphics.DrawPie(Pens.Blue, 160, 160, 160, 160, 140, 100);
e.Graphics.DrawPie(Pens.Pink, 160, 160, 160, 160, 260, 100);*/
//第十二题 实心扇形
/*e.Graphics.FillPie(Brushes.Pink, 160, 160, 160, 160, 20, 100);
e.Graphics.FillPie(Brushes.Blue, 160, 160, 160, 160, 140, 100);
e.Graphics.FillPie(Brushes.Pink, 160, 160, 160, 160, 260, 100);*/
//e.Graphics.DrawCurve(Pens.Black, new Point[] { new Point(20, 100), new Point(80, 60), new Point(140, 100), new Point(200, 140), new Point(260, 100) });
//e.Graphics.DrawClosedCurve(Pens.Black, new Point[] { new Point(20, 100), new Point(80, 60), new Point(140, 100), new Point(200, 140), new Point(260, 100) });
//e.Graphics.FillClosedCurve(Brushes.Red, new Point[] { new Point(20, 100), new Point(80, 60), new Point(140, 100), new Point(200, 140), new Point(260, 100) });
//e.Graphics.DrawString("这是一组实心椭圆", this.Font, Brushes.Black, 10, 20);
//e.Graphics.FillEllipse(Brushes.Purple, 40, 60, 40, 120);
//e.Graphics.FillEllipse(Brushes.Blue, 80, 100, 120, 40);
//e.Graphics.FillEllipse(Brushes.Green, 200, 60, 40, 120);
//e.Graphics.DrawString("这是一组实心椭圆", this.Font, Brushes.Black, 10, 20);
//e.Graphics.DrawEllipse(Pens.Purple, 40, 60, 40, 120);
//e.Graphics.DrawEllipse(Pens.Blue, 80, 100, 120, 40);
//e.Graphics.DrawEllipse(Pens.Green, 200, 60, 40, 120);
//e.Graphics.DrawRectangle(Pens.Blue, 40, 80, 160, 80);
//e.Graphics.DrawEllipse(Pens.Red, 40, 80, 160, 80);
e.Graphics.FillRectangle(Brushes.Blue, 40, 80, 160, 80);
e.Graphics.FillEllipse(Brushes.White, 40, 80, 160, 80);
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