C# - How To Hide Image Control When It Has No URL

I had Repeater control which had image control sometimes this image control hadnot data and I want to hide it when it hadnot data I did the code but it displayed as image without data (Not avaliable ) Note : That data come from data base so Img Had Id from database but without value (NULL)

protected void DLHome_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
Image Img = e.Item.FindControl("ModelLogo") as Image;
using (SqlConnection con = Connection.GetConnection())
{
string Sql = "Select Logo From Model";
SqlCommand com = new SqlCommand(Sql, con);
com.CommandType = CommandType.Text;
SqlDataReader dr = com.ExecuteReader();
if (dr.Read())
{
string Img2 = dr["Logo"].ToString();
if (Img2 == System.DBNull.Value.ToString())
{
Img.Visible = false;
}
}
}
}