How to add items dynamically in combobox in asp.net web page

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I am very new to ASP.Net. And I am creation a simple web page that contains 3 fields.

1. Email (dropdownlist/combobox)
2. File upload button
3. Remarks -Normal textbox

Currently I have 4 emails in that dropdown list, how can I add one or more emails in future dynamically in the drop downlist...?

Note : The emails can add only the people who are all already mentioned in the dropdown list before.

Please suggest me...to proceed further..

Posted 10-Oct-14 3:00am

Member 9885328

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Sinisa Hajnal 10-Oct-14 9:11am

Where do you get the emails from? If you hard-coded them as part of your HTML there is nothing you can do. If they are in the database, then you don't have to do anything, you add to database and they are included in your dropdown box. Please clarify the question, provide some code / html and what exactly do you need.

Thank you

Member 9885328 10-Oct-14 9:24am

I have provide rights to add an email to four people (A,B,C,D)

Then i shall provide the user name and password for all four people, so that when someone going to add an email in dropdown list i can check with uname and pwd then i can provide the permission to add an email in dropdownlist.

Note: Now i have an another question, if someone added the email successfully then close the site/browser and once again when they open the site, is there an added item will availbale in dropdownlist...? Please help to my question..

Thanks7872 10-Oct-14 9:40am

http://stackoverflow.com/questions/17468956/how-to-add-an-item-to-a-drop-down-list-in-asp-net

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Jems_007 · Answer 1 · 2014-10-10T03:46:00

Sir please Follow Bind dropdown list[^] link and refer that link. Store that new emailid in database and after storing that email rebind that data in dropdown list or you can write Response.redirect(yourpage name). that will re open your site/page and rebind data..

Write dropdown binding code in page load.

XML

protected void Page_Load(object sender, EventArgs e)
{
  bindtoddl();
}

private void bindtoddl()
    {
         SqlConnection con = new SqlConnection(s);
        SqlCommand cmd = new SqlCommand("select FieldName from TableName", con);
        SqlDataAdapter sda = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        sda.Fill(ds);
        DropDownList1.DataSource = ds;
        DropDownList1.DataTextField = "Email";
        DropDownList1.DataValueField = "ID";
        DropDownList1.DataBind();

      }