Question

the code below is my example of code how to connect and add by textbox what i want now is how to add with dropdownlist… code sample how to add by dropdownlist someone please???

public partial class SQL_Test : System.Web.UI.Page
    {
        SqlConnection myConnection;
        DataSet dataSet;
        string sql;
        SqlDataAdapter dataAdapter;
        protected void Page_Load(object sender, EventArgs e)
        {
            myConnection = new SqlConnection("trusted_connection=yes;" + "database=DataBaseConnection;" + "connection timeout=30;");
            dataSet = new DataSet();
            sql = "SELECT Firstname,Surname FROM BasicInfo";
            dataAdapter = new SqlDataAdapter(sql, myConnection);
            //fill dataset
            dataAdapter.Fill(dataSet, "datafill");

            //bind database to gridviwe
            GridView1.DataSource = dataSet;
            GridView1.DataBind();
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            myConnection.Open();
            SqlCommand AddCommand = new SqlCommand("INSERT INTO BasicInfo (Firstname,Surname) values(@a,@b)", myConnection);

            if (TextBox1.Text != null && TextBox2.Text != null)
            {
                //TextBox set Parameters
                AddCommand.Parameters.AddWithValue("@a", TextBox1.Text);
                AddCommand.Parameters.AddWithValue("@b", TextBox2.Text);

                //Execute Query
                AddCommand.ExecuteNonQuery();

                //emptied textbox's
                TextBox1.Text = "";
                TextBox1.Text = "";

                //Redirect
                Response.Redirect("SQL-Test.aspx");
            }

            //close connection
            myConnection.Close();
        }

Answer 1

To get the selected value from a dropdown you can access the Text property.

AddCommand.Parameters.AddWithValue("@a", TextBox1.Text);
AddCommand.Parameters.AddWithValue("@d", DropDownList1.Text);