Show ToolTip Text of CheckedListBox Items Bound from Database in Windows Form

In this blog we will know how to Show ToolTip text of CheckedListBox items bound from database in Windows Form.

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 System.Data.OleDb;

namespace InsertmultipleValueCheckBoxList

{

public partial class Form1 : Form

{

string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["dsn"];

OleDbCommand com;

string str;

private int tIndex = -1;

public Form1()

{

InitializeComponent();

checkedListBox1.MouseHover += new EventHandler(checkedListBox1_MouseHover);

checkedListBox1.MouseMove += new MouseEventHandler(checkedListBox1_MouseMove);

}

private void Form1_Load(object sender, EventArgs e)

{

OleDbConnection con = new OleDbConnection(ConnectionString);

con.Open();

str = "select * from test";

com = new OleDbCommand(str, con);

OleDbDataReader reader = com.ExecuteReader();

while (reader.Read())

{

checkedListBox1.Items.Add(reader["items"].ToString());

}

reader.Close();

con.Close();

}

private void checkedListBox1_MouseMove(object sender, MouseEventArgs e)

{

int index = checkedListBox1.IndexFromPoint(e.Location);

if (tIndex != index)

{

GetToolTip();

}

}

private void checkedListBox1_MouseHover(object sender, EventArgs e)

{

GetToolTip();

}

void GetToolTip()

{

Point pos = checkedListBox1.PointToClient(MousePosition);

tIndex = checkedListBox1.IndexFromPoint(pos);

if (tIndex > -1)

{

pos = this.PointToClient(MousePosition);

toolTip1.ToolTipTitle = "ToolTip for CheckedListBox";

toolTip1.SetToolTip(checkedListBox1, checkedListBox1.Items[tIndex].ToString());

}

}

}

}