hi rasul, pls try this code for dropdownlist in TextBox...
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;
namespace WindowsFormsApplication2
{
public partial class Form1 : Form
{
AutoCompleteStringCollection namesCollection = new AutoCompleteStringCollection();
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
namesCollection.Add("Chaitanya");
namesCollection.Add("Kranthi");
namesCollection.Add("Shakti");
namesCollection.Add("Ramachandra");
namesCollection.Add("Praveen");
namesCollection.Add("Rambabu");
namesCollection.Add("RamKishore");
textBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
textBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;
textBox1.AutoCompleteCustomSource = namesCollection;
}
}
}