how to display default profile image when user created?

i just give a demo basing on ur projet just compare this and if u face difficulty tell me
 protected void Loaddata()
    {
        con.Open();
        cmd = new SqlCommand("select gender,firstname,emailid,address,mobileno,CONVERT(VARCHAR(10),dateofbirth,111)as dateofbirth ,city,image,state  from User_Information where firstname='" + Session["uid"].ToString() + "'", con);
       // cmd = new SqlCommand("select  * from User_Information", con);
        da = new SqlDataAdapter(cmd);
        ds = new DataSet();
        da.Fill(ds);
        ddl_gender.SelectedValue = ds.Tables[0].Rows[0]["gender"].ToString();
        txt_name.Text = ds.Tables[0].Rows[0]["firstname"].ToString();
        txt_email.Text = ds.Tables[0].Rows[0]["emailid"].ToString();
        txt_address.Text = ds.Tables[0].Rows[0]["address"].ToString();
        txt_mob.Text = ds.Tables[0].Rows[0]["mobileno"].ToString();
        txt_bday.Text = ds.Tables[0].Rows[0]["dateofbirth"].ToString();
        txt_city.Text = ds.Tables[0].Rows[0]["city"].ToString();
        img_myprofile.ImageUrl = ds.Tables[0].Rows[0]["image"].ToString().Replace("~/", "");
        txt_state.Text = ds.Tables[0].Rows[0]["state"].ToString();
        if (img_myprofile.ImageUrl == "")
        {
            img_myprofile.ImageUrl = "~/user.jpg";
        }
       
    }