Winform 實現像菜單一樣彈出層

原文參考:http://www.cnblogs.com/springSky/archive/2013/02/19/2913993.html

自己整理了下,一些小細節要注意,否則沒有效果哦!

1、新建winform項目：PopupApplication

2、添加引用，引用上面下載的dll文件

3、因爲要顯示數據，所以這裏需要構造一個數據源，因此我建了一個對象Student，屬性：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、創建用戶控件：StudentListControl

5、在用戶控件中添加一個DataGridView命名：dgvStudentList 和TextBox命名：txtKeys，DataGridView是用來顯示數據列表的，TextBox是用來讓用戶輸入關鍵字用來檢索信息用的

如圖：

這個地方要注意把RowHeadersVisible屬性，將其設置爲False就OK。

然後要設置

his.dataGridView1.SelectionMode =DataGridViewSelectionMode.FullRowSelect;

下面的點擊纔會有效果

構建數據源並綁定數據，代碼：

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>
        /// 構造數據源
        /// </summary>
        /// <returns></returns>
        private List<Student> GetDataList()
        {
            List<Student> stList = new List<Student>();
            stList.Add(new Student() { SId = 1, SName = "張陽", SAge = 15, SCode = "zy", SAddress = "廣東省中山市9999999" });
            stList.Add(new Student() { SId = 2, SName = "歐陽新文", SAge = 17, SCode = "oyxw", SAddress = "廣東省廣州市99" });
            stList.Add(new Student() { SId = 3, SName = "宇文化及", SAge = 18, SCode = "ywhj", SAddress = "廣東省湛江市2222" });
            stList.Add(new Student() { SId = 4, SName = "溫斯特梅拉", SAge = 19, SCode = "wstml", SAddress = "廣東省茂名市" });
            stList.Add(new Student() { SId = 6, SName = "唐兵", SAge = 24, SCode = "tb", SAddress = "四川省閬中市555555555555" });
            stList.Add(new Student() { SId = 8, SName = "楊紅軍", SAge = 24, SCode = "yhj", SAddress = "四川省樂山市22222222222222222222" });
            stList.Add(new Student() { SId = 11, SName = "張翠山", SAge = 23, SCode = "zcs", SAddress = "四川省南充市7777777777777777" });
            stList.Add(new Student() { SId = 12, SName = "張三丰", SAge = 27, SCode = "zsf", SAddress = "廣東省中山市555" });
            stList.Add(new Student() { SId = 13, SName = "何月", SAge = 28, SCode = "hy", SAddress = "廣東省中山市88888" });
            stList.Add(new Student() { SId = 14, SName = "何寶生", SAge = 32, SCode = "hbs", SAddress = "廣東省中山市77" });
            stList.Add(new Student() { SId = 15, SName = "王家新", SAge = 33, SCode = "wjx", SAddress = "廣東省茂名市8" });
            stList.Add(new Student() { SId = 23, SName = "肖月倫", SAge = 34, SCode = "xyl", SAddress = "廣東省茂名市7777777" });
            stList.Add(new Student() { SId = 22, SName = "王嶽倫", SAge = 25, SCode = "wyl", SAddress = "廣東省中山市888888888888" });
            stList.Add(new Student() { SId = 24, SName = "紫陽紅玉", 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 = "廣東省中山市999999999999999" });
            stList.Add(new Student() { SId = 28, SName = "張郭老", SAge = 18, SCode = "zgl", SAddress = "四川省南充市333333333333333333333333" });
            stList.Add(new Student() { SId = 30, SName = "湯小雨", SAge = 24, SCode = "txy", SAddress = "四川省樂山市333333333333" });
            stList.Add(new Student() { SId = 31, SName = "吳志勝", SAge = 26, SCode = "wzs", SAddress = "四川省樂山市33" });
            stList.Add(new Student() { SId = 32, SName = "伍國天", SAge = 32, SCode = "wgt", SAddress = "四川省閬中市6666" });
            stList.Add(new Student() { SId = 33, SName = "朱新朝", SAge = 33, SCode = "zxz", SAddress = "四川省閬中市666666666666666" });

            return stList;
        }

7、給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、給dgvStudentList添加點擊事件，當點擊列表的時候需要把選中的值顯示到需要顯示選中值的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,添加如下代碼：

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);
        }
    }

最後效果如下圖