From dropdown list we chose the item particluar field name should be shown in text box using asp.net c#

Question

from dropdown list we chose the item particluar field name should be shown in text box using asp.net c#.

Satyapriya Nayak · Answer

Hi Selvi, Try this... Untitled Page onselectedindexchanged="DropDownList1_SelectedIndexChanged"> using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; using System.Data.SqlClient; namespace Dropdownlist_click_data_in_textbox { public partial class _Default : System.Web.UI.Page { string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; string str; SqlCommand com; protected void Page_Load(object sender, EventArgs e) { DropDownList1.AutoPostBack = true; SqlConnection con = new SqlConnection(strConnString); if (!IsPostBack) { DropDownList1.Items.Add("Choose id"); con.Open(); str = "select * from test"; com = new SqlCommand(str, con); SqlDataReader reader = com.ExecuteReader(); while (reader.Read()) { DropDownList1.Items.Add(reader["id"].ToString()); } reader.Close(); con.Close(); } } protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e) { SqlConnection con = new SqlConnection(strConnString); con.Open(); str = "select * from test where id='" + DropDownList1.SelectedItem.Text + "'"; com = new SqlCommand(str, con); SqlDataReader reader = com.ExecuteReader(); while (reader.Read()) { TextBox1.Text = reader["name"].ToString(); } reader.Close(); con.Close(); } } } Thanks If this post helps you mark it as answer

selvi subramanian · Answer

thanks satya

selvi subramanian · Answer

ya thanks senthil

Senthilkumar · Answer

Hi Selvi, If you have only requirement to fill in the textbox of selected item then i recommend to do in javascript. In design, onchange="AssignValue();"> In javascript, function AssignValue() { //Assign the value var e = document.getElementById(" DropDownList1 "); var strUser = e.options[e.selectedIndex].value; //Assign the text var e = document.getElementById(" DropDownList1 "); var strUser = e.options[e.selectedIndex].text; document.getElementById('TextBox1').value = strUser; return false; } Hope this will help you.