winform公共控件
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1.button:按钮 backcolor:背景颜色 backgroupimage:背景图片 click单击事件 image:显示图像
2.checkbox:复选框 checked:选中
用按钮控制复选框:点一下按钮复选框选中或删除
private void button1_Click(object sender, EventArgs e) { if (checkBox1.Checked) { checkBox1.Checked = false; } else { checkBox1.Checked = true; } }
3.checklistbox:复选框列表 向右小箭头,编辑项可以添加 或数据,items选项也可添加
根据数据库数据,生成checklistbox列表
nation.cs
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace WindowsFormsApplication1.App_Code { public class nation { private string _nationcode; public string Nationcode { get { return _nationcode; } set { _nationcode = value; } } private string _nationname; public string Nationname { get { return _nationname; } set { _nationname = value; } } } }
nationdata.cs
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Data.SqlClient; namespace WindowsFormsApplication1.App_Code { public class nationdata { SqlConnection conn = null; SqlCommand cmd = null; public nationdata() { conn = new SqlConnection("server=.;database=data0928;user=sa;pwd=123"); cmd = conn.CreateCommand(); } public List<nation> select() { List<nation> nlist = new List<nation>(); cmd.CommandText = "select*from nation"; conn.Open(); SqlDataReader dr = cmd.ExecuteReader(); if (dr.HasRows) { while (dr.Read()) { nation n = new nation(); n.Nationcode = dr[0].ToString(); n.Nationname = dr[1].ToString(); nlist.Add(n); } } conn.Close(); return nlist; } } }
form1.cs
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 WindowsFormsApplication1.App_Code; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } //根据数据库生成列表 private void button1_Click(object sender, EventArgs e) { List<nation> nlist = new List<nation>(); nationdata nd = new nationdata(); nlist = nd.select(); foreach (nation n in nlist) { checkedListBox1.Items.Add(n.Nationname); } } //根据列表选中项进行显示 private void button2_Click(object sender, EventArgs e) { string end = ""; int count = 0; foreach (object o in checkedListBox1.CheckedItems) { if (count > 0) { end = end + ","; } end += o.ToString(); count++; } MessageBox.Show(end); } } }
容器flowlayoutpanel
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 WindowsFormsApplication1.App_Code; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } //根据数据库生成列表 private void button1_Click(object sender, EventArgs e) { List<nation> nlist = new List<nation>(); nationdata nd = new nationdata(); nlist = nd.select(); foreach (nation n in nlist) { CheckBox cb = new CheckBox(); cb.Text = n.Nationname; flowLayoutPanel1.Controls.Add(cb); } } //点击按钮2将民族苗族选项选中 private void button2_Click(object sender, EventArgs e) { foreach (Control c in flowLayoutPanel1.Controls) { CheckBox cb = c as CheckBox; if (cb.Text=="苗族") { cb.Checked = true; } } } } }
4.combobox:下拉列表 触发事件:selectedindexchanged选项索引改变触发
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 WindowsFormsApplication1.App_Code; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } //根据数据库生成列表 private void button1_Click(object sender, EventArgs e) { List<nation> nlist = new List<nation>(); nationdata nd = new nationdata(); nlist = nd.select(); comboBox1.DataSource = nlist; comboBox1.DisplayMember = "nationname"; //默认选择最后一个 comboBox1.SelectedIndex = nlist.Count - 1; } //点击按钮2将选中的项显示出来 private void button2_Click(object sender, EventArgs e) { nation n = comboBox1.SelectedItem as nation; MessageBox.Show(n.Nationname); } //事件 选中的索引改变触发事件 private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) { nation n = comboBox1.SelectedItem as nation; MessageBox.Show(n.Nationcode); } } }
5.datetimepicker:时间日期选择
点击按钮3将选择的日期文本显示出来:
private void button3_Click(object sender, EventArgs e) { MessageBox.Show(dateTimePicker1.Text); }
点击按钮3将日期以datetime类型显示出来
private void button3_Click(object sender, EventArgs e) { MessageBox.Show(dateTimePicker1.Value.ToString()); }
对其赋值
private void button3_Click(object sender, EventArgs e) { dateTimePicker1.Value = Convert.ToDateTime("2000-1-1"); }
6.label:输入显示文本
7.linklabel:点击变颜色,设置连接的文本
8.listbox:列表框 columnwidth:列宽 行为selectionmode:可变为多选multisimple,multiextended
9.maskedtextbox:格式文本框 可设置掩码
10.monthcalendar:日历
点击按钮显示日期:
private void button3_Click(object sender, EventArgs e) { MessageBox.Show(monthCalendar1.SelectionStart.ToString("yyyy年MM月dd日")); }
选择时间段,开始结束
private void button3_Click(object sender, EventArgs e) { MessageBox.Show(monthCalendar1.SelectionStart.ToString()); MessageBox.Show(monthCalendar1.SelectionEnd.ToString()); }
时间段长度设置:行为maxselectioncount设置长度
11.notifyicon:右下角托盘工具 visible:是否可见 icon:图标 text:鼠标移上显示的文字
12.numericupdown:数字计数 数据increment:每次增加或减少的长度 maximum:最大值 minimum:最小值
取值:默认类型为decimal
private void button1_Click(object sender, EventArgs e) { MessageBox.Show(numericUpDown1.Value.ToString()); }
13.picturebox:图片框 可导入图片,可设置图片布置样式(平铺,拉伸...) 可设置点击等事件 可设置鼠标事件(事件-鼠标)
14.progressbar:进度条 value:设置进度条的值
取计数器的值,点击按钮,显示长度
private void button1_Click(object sender, EventArgs e) { int a = Convert.ToInt32(numericUpDown1.Value); progressBar1.Value = a; }
行为style:marquee跑马灯 快慢设置marqueeanimationspeed更改数值调节速度
private void button1_Click(object sender, EventArgs e) { int a = Convert.ToInt32(numericUpDown1.Value); progressBar1.MarqueeAnimationSpeed = a; }
15.radiobutton:单选按钮组 checked设置默认值
16.textbox:文本框 行为multiline:true多行false单行,自动换行 设置滚动条:外观scrollbars:horizontal水平滚动条,vertical竖直滚动条,both都有
要显示横向滚动条:行为wordwrap更改为false
设置最大长度:行为maxlength
设置密码型:行为passwordchar设置为一个*
使用系统默认的密码型:行为usesystempasswordchar设为true
行为readonly:不可以更改内容,但可以复制
行为enabled:不可用,鼠标焦点无法移入,不可选中复制
17.richtextbox:多行文本框,最大文本数比textbox多,拿来做多行内容用
18.tooltip:杂项中,注释其他工具
杂项initialdelay:鼠标停留多长时间显示,默认为半秒
19.treeview:树状列表 向右小箭头,编辑节点,添加根,添加子集
触发事件:afterselect更改选定内容后发生
private void treeView1_AfterSelect(object sender, TreeViewEventArgs e) { MessageBox.Show(treeView1.SelectedNode.Text); }
20.webbrowser
设置页面:显示页面为百度
namespace WindowsFormsApplication2 { public partial class Form2 : Form { public Form2() { InitializeComponent(); Uri u = new Uri("http://www.baidu.com"); webBrowser1.Url = u; } } }
在文本框输入,点击按钮跳转网页
private void button1_Click(object sender, EventArgs e) { Uri u = new Uri(textBox1.Text); webBrowser1.Url = u; }
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