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Windows Forms

Display Multiple Columns Into ComboBox From Database Table in C#

By Satya Prakash on Mar 13 2013
In this article I explain how to bind multiple column values into a combobox in C#.
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In this article I explain how to bind multiple column values into a ComboBox. It is very simple but I have often bound a single column in a ComboBox so it was a bit of a curiosity for me.

Use the following procedure to bind to a combo box.

Step 1

Open a Windows Forms application and insert a ComboBox and a button control on the form from the toolbox.

Step 2

Now write the simple C# code to bind the ComboBox with multiple columns.

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.SqlClient;


namespace insert_image_in_database


    public partial class Form5 : Form


        public Form5()




        SqlCommand cmd;

        SqlConnection con;

        SqlDataAdapter da;

        DataSet ds;

        private void button1_Click(object sender, EventArgs e)


            con = new SqlConnection("Data Source=MCNDESKTOP03;Initial Catalog=pulkit;User ID=sa;Password=wintellect@123");

            cmd =new SqlCommand ("select * from emp", con);

            da = new SqlDataAdapter(cmd);

            DataSet ds = new DataSet();


            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)


                comboBox1.Items.Add(ds.Tables[0].Rows[i][0] + " " + ds.Tables[0].Rows[i][1] + " " + ds.Tables[0].Rows[i][2]);    







 Step 3

Now run your application and  click on the button then see the ComboBox filled with multiple column values.