Winform实现像菜单一样弹出层--688IT编程网

Winform实现像菜单⼀样弹出层

原⽂:

在实际⼯作中，如果能像菜单⼀样弹出⾃定义内容，会⽅便很多，⽐如查询时，⽐如下拉列表显⽰多列信息时，⽐如在填写某个信息需要查看⼀些信息树时。这个时候⾃定义弹出界⾯就显的⾮常重要了

我这⾥其实⽤到的是⽹上到的⼀个控件（），控件可以把你装载的任何对象显⽰出来（这⾥的对象是指：窗体，⾃定义控件等），这⾥⽂章写出来并不是为了炫耀什么，只是觉得发现些好东西就分享出来⽽已，同时也做个记录，⽅便以后查

开始正⽂，这⾥我做⼀个多列下拉列表来说明：

1、新建winform项⽬：PopupApplication

2、添加引⽤，引⽤上⾯下载的dll⽂件

3、因为要显⽰数据，所以这⾥需要构造⼀个数据源，因此我建了⼀个对象Student，属性：SId,SCode,SName,SAge,SAddress namespace PopupApplication

{

public class Student

{

public int SId { get; set; }

public string SCode { get; set; }

public string SName { get; set; }

public int SAge { get; set; }

public string SAddress{get;set;}

}

4、创建⽤户控件：StudentListControl

5、在⽤户控件中添加⼀个DataGridView命名：dgvStudentList 和TextBox命名：txtKeys，DataGridView是⽤来显⽰数据列表的，TextBox 是⽤来让⽤户输⼊关键字⽤来检索信息⽤的

如图：

6、构建数据源并绑定数据，代码：

private List<Student> _dataList = new List<Student>();

private TextBox _txtBox;

public StudentListControl(TextBox txtBox)

{

InitializeComponent();

_txtBox = txtBox;

_dataList = GetDataList();

}

private void StudentListControl_Load(object sender, EventArgs e)

{

dgvStudentList.DataSource = _dataList;

}

/// <summary>

///构造数据源

/// </summary>

/// <returns></returns>

private List<Student> GetDataList()

{

List<Student> stList = new List<Student>();

stList.Add(new Student() { SId = 1, SName = "张阳", SAge = 15, SCode = "zy", SAddress = "⼴东省中⼭市9999999" });

stList.Add(new Student() { SId = 2, SName = "欧阳新⽂", SAge = 17, SCode = "oyxw", SAddress = "⼴东省⼴州市99" });

stList.Add(new Student() { SId = 3, SName = "宇⽂化及", SAge = 18, SCode = "ywhj", SAddress = "⼴东省湛江市2222" });

stList.Add(new Student() { SId = 4, SName = "温斯特梅拉", SAge = 19, SCode = "wstml", SAddress = "⼴东省茂名市" });

datagridview数据源stList.Add(new Student() { SId = 6, SName = "唐兵", SAge = 24, SCode = "tb", SAddress = "四川省阆中市555555555555" });

stList.Add(new Student() { SId = 8, SName = "杨红军", SAge = 24, SCode = "yhj", SAddress = "四川省乐⼭市22222222222222222222" });

stList.Add(new Student() { SId = 11, SName = "张翠⼭", SAge = 23, SCode = "zcs", SAddress = "四川省南充市7777777777777777" });

stList.Add(new Student() { SId = 12, SName = "张三丰", SAge = 27, SCode = "zsf", SAddress = "⼴东省中⼭市555" });

stList.Add(new Student() { SId = 13, SName = "何⽉", SAge = 28, SCode = "hy", SAddress = "⼴东省中⼭市88888" });

stList.Add(new Student() { SId = 14, SName = "何宝⽣", SAge = 32, SCode = "hbs", SAddress = "⼴东省中⼭市77" });

stList.Add(new Student() { SId = 15, SName = "王家新", SAge = 33, SCode = "wjx", SAddress = "⼴东省茂名市8" });

stList.Add(new Student() { SId = 23, SName = "肖⽉伦", SAge = 34, SCode = "xyl", SAddress = "⼴东省茂名市7777777" });

stList.Add(new Student() { SId = 22, SName = "王岳伦", SAge = 25, SCode = "wyl", SAddress = "⼴东省中⼭市888888888888" });

stList.Add(new Student() { SId = 24, SName = "紫阳红⽟", SAge = 45, SCode = "zyhy", SAddress = "四川省南充市2" });

stList.Add(new Student() { SId = 27, SName = "雷⼩兵", SAge = 30, SCode = "lxb", SAddress = "⼴东省中⼭市999999999999999" });

stList.Add(new Student() { SId = 28, SName = "张郭⽼", SAge = 18, SCode = "zgl", SAddress = "四川省南充市333333333333333333333333" });

stList.Add(new Student() { SId = 30, SName = "汤⼩⾬", SAge = 24, SCode = "txy", SAddress = "四川省乐⼭市333333333333" });

stList.Add(new Student() { SId = 31, SName = "吴志胜", SAge = 26, SCode = "wzs", SAddress = "四川省乐⼭市33" });

stList.Add(new Student() { SId = 32, SName = "伍国天", SAge = 32, SCode = "wgt", SAddress = "四川省阆中市6666" });

stList.Add(new Student() { SId = 33, SName = "朱新朝", SAge = 33, SCode = "zxz", SAddress = "四川省阆中市666666666666666" });

return stList;

}

7、给txtKeys控件添加TextChange事件：

private void txtKeys_TextChanged(object sender, EventArgs e)

{

if(string.IsNullOrEmpty(txtKeys.Text))

{

return;

}

var resultList = _dataList.FindAll(std=>std.SName.Contains(txtKeys.Text) || std.SAddress.Contains(txtKeys.Text));

dgvStudentList.DataSource = resultList;

}

8、给dgvStudentList添加点击事件，当点击列表的时候需要把选中的值显⽰到需要显⽰选中值的TextBox中

private void dgvStudentList_Click(object sender, EventArgs e)

{

if (dgvStudentList.RowCount > 0 && dgvStudentList.SelectedRows.Count > 0)

{

DataGridViewCell nameCell= dgvStudentList.CurrentRow.Cells["ColumnSName"];

DataGridViewCell addressCell = dgvStudentList.CurrentRow.Cells["ColumnSAddress"];

string strName = nameCell != null && nameCell.Value != null ? nameCell.Value.ToString() : "";

string strAddress = addressCell != null && addressCell.Value != null ? addressCell.Value.ToString() : "";

_txtBox.Text = string.Format("{0},{1}",strName,strAddress);

}

9、在Form1界⾯添加TextBox控件命名：txtSelectValue，添加如下代码：

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void txtSelectValue_Click(object sender, EventArgs e)

{

StudentListControl uc = new StudentListControl(txtSelectValue);

Popup pop = new Popup(uc);

pop.Show(txtSelectValue, false);

}

⾄此功能实现了，全部代码：

View Code

using System;

using System.Windows.Forms;

using PopupTool;

namespace PopupApplication

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void txtSelectValue_Click(object sender, EventArgs e)

{

StudentListControl uc = new StudentListControl(txtSelectValue);

Popup pop = new Popup(uc);

pop.Show(txtSelectValue, false);

}

using System;

using System.Collections.Generic;

using System.Windows.Forms;

namespace PopupApplication

{

public partial class StudentListControl : UserControl

{

private List<Student> _dataList = new List<Student>();

private TextBox _txtBox;

public StudentListControl(TextBox txtBox)

{

InitializeComponent();

_txtBox = txtBox;

_dataList = GetDataList();

}

private void StudentListControl_Load(object sender, EventArgs e)

{

dgvStudentList.DataSource = _dataList;

}

/// <summary>

//构造数据源

/// </summary>

/// <returns></returns>

private List<Student> GetDataList()

{

List<Student> stList = new List<Student>();

stList.Add(new Student() { SId = 1, SName = "张阳", SAge = 15, SCode = "zy", SAddress = "⼴东省中⼭市9999999" });

stList.Add(new Student() { SId = 2, SName = "欧阳新⽂", SAge = 17, SCode = "oyxw", SAddress = "⼴东省⼴州市99" });

stList.Add(new Student() { SId = 3, SName = "宇⽂化及", SAge = 18, SCode = "ywhj", SAddress = "⼴东省湛江市2222" });

stList.Add(new Student() { SId = 4, SName = "温斯特梅拉", SAge = 19, SCode = "wstml", SAddress = "⼴东省茂名市" });

stList.Add(new Student() { SId = 6, SName = "唐兵", SAge = 24, SCode = "tb", SAddress = "四川省阆中市555555555555" });