filter dropdown

Question

I want to have dropdown which bind from the database. It should have filter functionality such as if i write in textbox letter 'S' then all item from 'S' in drop down it will filter. so please help me out.

Satyapriya Nayak · Answer

Hi Ajay, Here is a windows form solution for your questions? 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 filter_dropdown { public partial class Form1 : Form { string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["dsn"]; OleDbCommand com; OleDbDataAdapter oledbda; DataSet ds; string str; DataTable dt; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { OleDbConnection con = new OleDbConnection(ConnectionString); con.Open(); str = "select * from student"; com = new OleDbCommand(str, con); OleDbDataReader reader = com.ExecuteReader(); while (reader.Read()) { comboBox1.Items.Add(reader["sname"]); } reader.Close(); con.Close(); } private void textBox1_TextChanged(object sender, EventArgs e) { comboBox1.Items.Clear(); OleDbConnection con = new OleDbConnection(ConnectionString); con.Open(); str = "select sname from student where sname like '" + textBox1.Text + "%'"; com = new OleDbCommand(str, con); oledbda = new OleDbDataAdapter(com); ds = new DataSet(); oledbda.Fill(ds, "student"); dt = ds.Tables["student"]; int i; for (i = 0; i { comboBox1.Items.Add(dt.Rows[i].ItemArray[0]); } con.Close(); } } } Thanks If this post helps you mark it as answer

Ajay · Answer

asp.net controls

Amit Choudhary · Answer

Please mention when you ask a question about the control's related queries. This will help you getting the answer quickly. Is it a windows forms control, or Asp.net control or WPF etc.

filter dropdown

Answers (3)