Insert more than 1 lakh records , show progress bar

i have created a web application in which a user can upload an excel file , the file when uploaded will get all the records from 1st column from the sheet1 and display all the email ids separated by a semi colon, then when the user clicks a "SAVE LIST" button all the emails ids will be saved in a table as an individual records. I have created the application, i want to know is there a way possible that while saving the records in the database a user is shown a progress bar .

Moreover is there any better way to insert so many records at a time.

code used to insert records from textbox separated by semi colon

string con = System.Configuration.ConfigurationManager.ConnectionStrings["emails"].ToString();
        SqlConnection sconn = new SqlConnection(con);
        StringBuilder text = new StringBuilder();
        string[] a = TextBox1.Text.Split(';');
       
        foreach (string em in a)
        {

            if (em != "")
            {
                text.Append("INSERT INTO ids  VALUES ('");
            text.Append(Session["compName"].ToString()); //Construct file name if needed...
            text.Append("','");
            text.Append(DropDownList1.SelectedValue.ToString()); //Construct file name if needed...
            text.Append("','");
            text.Append(em);
            text.Append("') ");
        }
          
            }
          sconn.Open();
            SqlCommand scomm = new SqlCommand(text.ToString(), sconn);
           
                scomm.ExecuteNonQuery();
        sconn.Close();
        Label1.Text = "E-Mails Succesfully Added";
      
        TextBox1.Text = "";

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