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It is successful the first time you enter a number, but if you remove that number again and enter it is adding.
Like first input 4 in textbox and enter. Remove that number textbox input 6 and enter.
It "adding 4+6" 4 al right plus new 6 more will display means totally 10.
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;
public partial class assigned: System.Web.UI.Page
    protected void Page_Load(object sender, EventArgs e)
        if (IsPostBack && DDLCount > 0)

    public int DDLCount
            // Try to get an instance of the DDLCount ViewState object
            object temp = ViewState["DDLCount"];
            // If temp is not null then cast it to int and return it,
            // otherwise return 0
            return temp == null ? 0 : (int)temp;
        set { ViewState["DDLCount"] = value; }
    private void CreateDropDownLists()
        int a = Convert.ToInt32(TextBox4.Text);
        // This is just to set the count to a default value
        // You may possibly need to generate the count of dropdownlists
        // in some other manner, depending on your project
        //if (DDLCount == 0)
        DDLCount = a;   //i   have  to  ask  HOw  DDLCount  is  0
        // I  can  not   understand  it 

        for (int i = 0; i < DDLCount; i++)
            // Create the dropdownlists
            DropDownList ddl = new DropDownList();
            DropDownList dd2 = new DropDownList();
            ddl.ID = "Text" + i;
            dd2.ID = "Texts" + i;
            LiteralControl l1 = new LiteralControl("<br></br>");

            //ddl.Items.Add(new ListItem("TestText_" + i, "TestValue_" + i));
            SqlConnection con1 = new SqlConnection("Data Source=ABC-0D30299B90A;Initial Catalog=JAPIT;Integrated Security=True");
            string st = "select  doe_name from   Doe_detail ";
            SqlCommand cmd = new SqlCommand(st, con1);
            SqlDataReader dr = cmd.ExecuteReader();
            while (dr.Read())


            SqlConnection con2 = new SqlConnection("Data Source=ABC-0D30299B90A;Initial Catalog=JAPIT;Integrated Security=True");
            string std = "select  phone from   Doe_detail ";
            SqlCommand cmd1 = new SqlCommand(std, con2);
            SqlDataReader dr1 = cmd1.ExecuteReader();
            while (dr1.Read())

            // Add it to the panel


    protected void TextBox4_TextChanged(object sender, EventArgs e)

    protected void Button1_Click(object sender, EventArgs e)

    protected void Button2_Click(object sender, EventArgs e)
        string value = "";
        string ids = "";
        // Cycle through each dropdownlist
        for (int i = 0; i < DDLCount; i++)
            // Find the dropdownlist inside the Panel
            DropDownList ddl = Panel3.FindControl("Text" + i) as DropDownList;

            // Set the label to the SelectedValue of the dropdownlist
            //Label1.Text += ddl.SelectedValue + " : ";
            value = ddl.SelectedValue.ToString();
            DropDownList dd2 = Panel3.FindControl("Texts" + i) as DropDownList;

            // Set the label to the SelectedValue of the dropdownlist
            //Label1.Text += ddl.SelectedValue + " : ";
            ids = dd2.SelectedValue.ToString();
            SqlConnection con = new SqlConnection("Data Source=ABC-0D30299B90A;Initial Catalog=JAPIT;Integrated Security=True");


            SqlCommand cmd1 = new SqlCommand("insert into niitstud values('" + value + "','"+ids+"')", con);
Updated 1-Nov-11 6:09am
hzawary 1-Nov-11 14:42pm    
Where is your question?

1 solution

Hello friend what is your question....

How to create a dynamic drop down list..

But in your existing code where you got error or what you want please specify that thing instaed of giving your whole code...
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