Table contain field but datareader returns null

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C#

ASP.NET

SQL

.NET

Visual-Studio

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I want to call a procedure but it returns nothing and when I debug it displays null but my table contain a record

below is my code :

protected void Button1_ServerClick(object sender, EventArgs e)
{
    using (SqlConnection con = new SqlConnection(conString))
    {
        using (SqlCommand cmd = new SqlCommand("LoginProcedure", con))
        {
            cmd.CommandType = CommandType.StoredProcedure;
            SqlParameter p1 = new SqlParameter("@student_id", Text1.Value);
            cmd.Parameters.Add(p1);
            con.Open();
            cmd.ExecuteNonQuery();
            SqlDataReader dr = cmd.ExecuteReader();
            while (dr.Read())
            {
                Label2.Text = dr.GetString(0);
            }
        }
    }
}

this is my procedure :

CREATE PROCEDURE [dbo].[LoginProcedure]
	@student_id as varchar(10)
AS
	SELECT student_id,dob from Personal where student_id=@student_id
RETURN 0

What I have tried:

I tried many different things and I used textbox and button as HTML controls they are HTML controls with runat=server property true and I also try to change my procedure with query but still it returns nothing