ListView as usercontrol with Auto complete functionality using C#.NET

**ListView as usercontrol with Auto complete functionality using C#.NET 
**
this is the output..

•  Create a UserControl and name it as MyControlforUserName
• Place a ListView Control in UserControl
• Write the functions for dynamically binding
• Write the Code for Sorting the ListView
• Returns the selected records

Whole User Control Program is Follow

public partial  class MyControlforUserName : UserControl
    {
        public string  uname,mtch;
        public int  id;
        public string  rd
        {
            get;
            set;
        }
        DataTable dt = new  DataTable();
        public event  EventHandler SelectedIndexChanged;
        public MyControlforUserName()
        {
            InitializeComponent();
            this.Load += new  EventHandler(MyControlforUserName_Load);
            this.listView1.SelectedIndexChanged += new  EventHandler(listView1_SelectedIndexChanged);
            listView1.FullRowSelect = true;
        }
 
        private void  MyControlforUserName_Load(object sender, EventArgs e)
        {
            bindlistview();
        }
 
 
public void  bindlistview()
       {
           SelectQuery sel = new  SelectQuery();
           dt.Clear();
           listView1.Items.Clear();
            dt = sel.SelectUserroledetails(); //DataTable is binded with user name. I place the Query in Class named SelectQuery
           listView1.View = View.Details; //Listview to display as Grid
           for (int i = 0; i < dt.Rows.Count; i++)// To bind ListView with DataTable dt Rows
           {
               DataRow dr = dt.Rows[i];
               ListViewItem listitem = new  ListViewItem(dr["UserID"].ToString());
               listitem.SubItems.Add(dr["UserName"].ToString());
               listitem.SubItems.Add(dr["Role"].ToString());
               listView1.Items.Add(listitem);
           }
            
       }
 
string match, searchdata; // global declaration of variables
 public void  SearchListViewItem(string text) //'text' is the string to search for matching records
        {
           searchdata = text;
            ListView list = new  ListView(); // Creates new ListView
            foreach (ListViewItem item in listView1.Items)
            {
                match = item.SubItems[1].Text;
                if(match.StartsWith(text))
                {
                    list.Items.Add((ListViewItem)item.Clone());  // if a match is found, that record is added to new ListView list
                }
            }
            foreach (ListViewItem vw in listView1.Items)
                listView1.Items.Clear();  // Clearing the old ListView
            foreach (ListViewItem it in list.Items)
                listView1.Items.Add((ListViewItem)it.Clone());  // Adding all records ( that is matching records ) in list to old ListView listview1
            listviewselecteditems(); // Calling this function to return the selected records.
  
        }
 
public void  listviewselecteditems()
       {
               if (listView1.SelectedItems.Count > 0) // if a selection is made, the corresponding records are retured
               {
                   ListViewItem item = listView1.SelectedItems[0];
                   uname = item.SubItems[1].Text;
                   string s = item.SubItems[0].Text;
                   id = Convert.ToInt32(s);
               }
               else if  (match != "")
                   uname = searchdata; 
                
               if (SelectedIndexChanged != null) SelectedIndexChanged(this, null);
             
       }
 
 private void  listView1_ColumnWidthChanging(object sender, ColumnWidthChangingEventArgs e) //for avoiding column resizing
        {
            e.Cancel = true;
            e.NewWidth = listView1.Columns[e.ColumnIndex].Width;
        }

Now create a window form. And place a textbox.  

• Drag and Drop the MyControlforUserName from toolbox to our form.

• We have to take four events of textbox, TextChanged, KeyPress, Click and Leave events.

  int us=0;
   
   private void  textBox2_TextChanged(object sender, EventArgs e)
          {
             
              else if  (us == 3)
              {
                  myControlforUserName1.SearchListViewItem(textBox2.Text);              
                  textBox2.Text = myControlforUserName1.uname;
                  us = 0;
              }
              else
              {
                  textBox2.Text = myControlforUserName1.uname;
              }
   
          }
     private void  textBox2_KeyPress(object sender, KeyPressEventArgs e)
          {
              if (Regex.IsMatch(e.KeyChar.ToString(), @"^[a-zA-Z]+$") == true)
              {
                  us = 3;
                 // textBox2.Text = e.KeyChar.ToString();
              }
          }
    private void  textBox2_Leave(object sender, EventArgs e)
          {
              textBox2.Text = myControlforUserName1.uname;
              myControlforUserName1.Visible = false;
          }
   private void  textBox2_Click(object sender, EventArgs e)
          {
              myControlforUserName1.Visible = true;
              myControlforUserName1.BringToFront();
              myControlforUserName1.Left = textBox2.Left;
              myControlforUserName1.Top = textBox2.Bottom + 1;
              myControlforUserName1.Visible = true;
  }
  

Wish you a great day..Happy Codding :)