private void button1_Click(object sender, EventArgs e)
{
MySecondClass msc = new MySecondClass();
//msc.ShowMessage(msc.HairColor);
//msc.MessageBoxSpecial();
//msc.Show("just show something");
msc.MyVoid();
}
public static MyClass MakeStatusTheSame(this MyClass mc, MySecondClass msc)
{
mc.Status = msc.status
return(mc); /* make the method chainable */
}
public void MethodE <T>(MySecondClass <T> someParameter) where T : ConstraintB
{
}
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog ofd1 = new OpenFileDialog();
if (ofd1.ShowDialog() == DialogResult.OK)
{
//File.class
//Path class
///////process class
//Process.Start("notepad.exe");
//MessageBox.Show(Process.GetCurrentProcess().ProcessName);
//Process.GetCurrentProcess().Kill();
Process[] ps = Process.GetProcesses();
foreach (Process p in ps)
{
if (!p.Responding)
{
p.Kill();
}
}
Process.GetProcessesByName("chrome");
}
// folderBrowserDialog
FolderBrowserDialog fbd = new FolderBrowserDialog();
fbd.RootFolder = Environment.SpecialFolder.MyDocuments;
fbd.Description = "My fbd test";
if (fbd.ShowDialog() == DialogResult.OK)
{
//Directory class
//只获取目录下的文件
string [] files = Directory.GetFiles(fbd.SelectedPath.ToString());
// 获取目录
string[] dirs = Directory.GetDirectories(fbd.SelectedPath.ToString());
//获取盘符
string[] drives = Directory.GetLogicalDrives();
//创建
Directory.CreateDirectory(fbd.SelectedPath + "\\test");
//Directory.Move(); //mv
MessageBox.Show(fbd.SelectedPath.ToString());
}
//substring
string subTest = "vanora aery ";
string s = subTest.Substring(0, 6);
// indexof
int i = subTest.IndexOf(" ");
//Trim
s = subTest.Trim();
//remove
s = subTest.Remove(6);
//replace
s = subTest.Replace("a", "_");
//Split
string [] ss = s.Split('_');
//ToCharArray 转换为Unicode数组
char [] cc = "周ssda".ToCharArray();
//math
string nu = Math.Pow(2, 3).ToString();
//random
Random r = new Random();
r.Next();
r.Next(0, 100);
//生成随机字符串
char[] letters = "0123456789abcdefghijkASDFGHJKL-_=+".ToCharArray();
//利用random生成随机数作为下标，获取随机字符串
//convert Bitconvert 基础类型转换，区别在于BitConvert是将基础类型转为byte数组或者相反的转换
// is as casting
// is 关键字用于判断是否属于某种类型
// as/casting 做类型转换
// example
//object myObject = "stringTest";
//if (myObject is string) MessageBox.Show(myObject as string);
// openfileDialogs
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "文本|*.txt|图片|*.jpg";
ofd.Title = "OpenFileDialogTest";
if (ofd.ShowDialog() == DialogResult.OK)
{
StreamReader sr = new StreamReader(File.OpenRead(ofd.FileName));
char c = (char)sr.Peek(); //获取一个字符，但是不改变文件偏移
char c1 = (char)sr.Read(); // 读取一个字符，文件偏移+1
char c2 = (char)sr.Read();
//// streamreader
//textBox1.Text = sr.ReadToEnd(); // 二进制方式读取整个文件
textBox1.Text = sr.BaseStream.ReadByte().ToString(); // 读取十六进制字节，转成ASCII码
byte [] buffer = new byte[5];
sr.BaseStream.Position = 2; // 指定offset
sr.BaseStream.Read(buffer, 0, 5); // 读取指定长度的流
foreach (byte b in buffer)
{
textBox1.Text += b.ToString("X") + " ";
}
sr.Dispose();
MessageBox.Show(ofd.FileName);
}
///// class
MyClass mc = new MyClass("Vanoa");
//delegates
mc.showDelegateMsgs();
//event
mc.OnPropertyChanged += new EventHandler(mc_OnpropertyChanged);
mc.eventName = "eventTest";
//indexers
MessageBox.Show(mc[1]);
mc[1] = "none";
MessageBox.Show(mc[1]);
MessageBox.Show("My name is " + mc.GetName());
// static access
MyClass.showMsg("I love you");
//mc.Name = "hello"; //set属性是private的
MessageBox.Show("Now My name is " + mc.Name);
MySecondClass mc2 = new MySecondClass();
mc2.MyVoid();
///// try catch
//try
//{
// string[] test = new string[4];
// MessageBox.Show(test[6]);
//}
//catch (System.Exception ex)
//{
// MessageBox.Show(ex.Message.ToString());
//}
//////CheckBox
//if (checkBox1.Checked == false)
//{
// MessageBox.Show("未勾选");
// //checkBox1.Enabled = false;
//}
//else if (checkBox1.Checked == true)
//{
// MessageBox.Show("勾选");
//}
////// TextBox
//textBox1.MaxLength = 2;
//textBox1.Text = "The Button Clicked";
////修改属性
//button1.Text = "vanora";
//button1.Enabled = false;
//button1.Height = 90;
//// onject
//object Myobject = true;
//MessageBox.Show(Myobject.ToString());
//MessageBox.Show("Hello", "MyItem");
}
