validate because of user purpose

Hi Nar,


Please explain the question deep and clearly.


Try this...


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 Test_windows_app
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            comboBox1.Items.Add("Select");
            comboBox2.Items.Add("e001");
            comboBox2.Items.Add("e002");
            comboBox2.Items.Add("e003");
            Combo();
        }

        private void Combo()
        {
            int i;
            for (i = 1; i <= 29; i++)
            {
                comboBox1.Items.Add(i);
            }
        }
        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (comboBox2.SelectedIndex == -1)
            {
                if (comboBox1.Items.Contains(comboBox1.SelectedItem) == true)
                {
                    MessageBox.Show("Please select employee id");
                    comboBox1.Items.Clear();
                    Combo();
                }
            }     
        } 
    }
}




Thanks
If this post helps you mark it as answer

attachment please