三层架构
1.窗口属性
{
IsMdiContainer:True 指定该窗体是否是MDI容器
windowState:Maximized窗口最大化
(4)设置StartPotion:CenterParent 窗口位置居中
(5)Icon:自定义图标
(6)MaximizeBox:False 无最大化选项
(7)FormBorderStyle:FixedSingle 不可改变窗口大小
(8)AcceptButton:btnLogin 按Enter相当于点击登录按钮
(9)CancelButton:btnExit 按Esc相当于点击取消按钮
}
2.窗口登录
{
progrom
FormLogin Flogin = new FormLogin();
if (Flogin.ShowDialog() == DialogResult.OK)
{
Application.Run(new FormMain());
}
}
3.窗体渐渐出现的效果
{
timer1控件
Enable；true
Interval:100
private void timer1_Tick(object sender, EventArgs e)
{
double i = 0.05;
Opacity += i;
}
}
4.设置mdi窗体
{
//1 设置主窗体的ismdicontainer属性
//2 设置要打开的子窗体的mdiparent
//3 注意在mdi父窗体中，不能使用showdialog 打开子窗体
//以mdi子窗体的方式打开
在父窗口中
FrmStudent f = FrmStudent.Instance;
f.MdiParent = this;
f.Show();
//单例模式 当前项目中有且只有该类的一个对象
private static FrmStudent instance;
public static FrmStudent Instance
{
get {
//假如instace没有被创建或者已经被释放，则新建窗口
if (instance == null || instance.IsDisposed)
{
instance = new FrmStudent();
}
return instance;
}
}
}
5.清空box中所有的文本框
{
foreach (Control item in gbadd.Controls)
{
if (item is TextBox)
{
TextBox txt = item as TextBox;
txt.Text = "";
}
}
}
5.dataGirdView的几个属性
{
AutoSizeColunbMode；fill 可见列自动调整大小
AllowUserTOresuzeRows；false不许用户自动调整行的大小
selectionMode:fullRowselect 点中单元格时选择一行
RowHeadersVisible :fasle 取消表头列的显示
}
6.关闭窗口前，提示用户是否真的关闭窗口
{
private void FrmMain_FormClosing(object sender, FormClosingEventArgs e)
{
if (MessageBox.Show("确定退出？","提示",MessageBoxButtons.YesNo,MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.No)
{
e.Cancel = true;
}
}
}
7.MD5
{
//计算字符串的md5值
static string GetMd5(string txt)
{
//明文 把字符串转化成字节数组
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(txt);
//计算md5的类
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
//加密以后的字节数组
byte[] ctyptBytes= md5.ComputeHash(buffer);
//把字节数组 转化成 16进制的字符串
string s = "";
for (int i = 0; i < ctyptBytes.Length; i++)
{
//把每一个字节转化成2位的16进制数
s += ctyptBytes[i].ToString("x2");
}
return s;
}
//计算文件的md5值
static string GetFileMd5(string path)
{
string s = "";
using (FileStream fs = new FileStream(path,FileMode.Open))
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] cryptBytes = md5.ComputeHash(fs);
for (int i = 0; i < cryptBytes.Length; i++)
{
s += cryptBytes[i].ToString("x2");
}
}
return s;
}
}
8.combox
{
List<Classes> list = bll.GetAllClasses();
Classes c = new Classes();
c.CName = "请选择";
c.CID = -1;
list.Insert(0,c); //增加请选择一项
//如果绑定的泛型集合 要显示的泛型集合中对象的属性
cboSearchClass.DisplayMember = "cName";
cboSearchClass.ValueMember = "cId";
cboSearchClass.DataSource = list;
}
9.右键菜单
{
private void resetToolStripMenuItem_Click(object sender, EventArgs e)
{
MessageBox.Show("Test");
}
}
10.显示地区窗口
{
private void FormChooseArea_Load(object sender, EventArgs e)
{
Stopwatch sw = new Stopwatch();
sw.Start();
LoadParents();
sw.Stop();
MessageBox.Show(sw.ElapsedMilliseconds.ToString());
}
void LoadParents()
{
TreeNode parent = new TreeNode();
parent.Tag = 0;
parent.Text = "全国";
tvAreas.Nodes.Add(parent);
AreasBLL bll = new AreasBLL();
List<Areas> list = bll.GetAllAreas();
LoadChild(parent,list);
parent.Expand();
}
void LoadChild(TreeNode parent,List<Areas> list)
{
//获取父节点的id
int pid = Convert.ToInt32(parent.Tag);
foreach (Areas item in list)
{
//找到当前的子节点
if (item.APid == pid)
{
TreeNode tn = new TreeNode();
tn.Text = item.AName;
tn.Tag = item.AID;
parent.Nodes.Add(tn);
//调用递归方法
LoadChild(tn, list);
}
}
}
public string txt = "";
private void btnChoose_Click(object sender, EventArgs e)
{
GetTxt(tvAreas.SelectedNode);
txt = txt.TrimEnd('-');
if (del != null)
{
del(txt);
this.DialogResult = System.Windows.Forms.DialogResult.OK;
}
}
void GetTxt(TreeNode tn)
{
if (tn.Parent != null)
{
//递归
GetTxt(tn.Parent);
}
txt += tn.Text + "-";
}
private void btnCancel_Click(object sender, EventArgs e)
{
this.Close();
}
}
11获得拼音
{
static string GetPinYins(string name)
{
string s = "";
//乐文
foreach (char item in name)
{
if (ChineseChar.IsValidChar(item))
{
ChineseChar cc = new ChineseChar(item);
s += cc.Pinyins[0].TrimEnd('1','2','3','4','5') + " ";
}
else
{
s += item.ToString();
}
}
return s;
}
}
12.
