How to find columns with missing or those with datatype mismatch found in 2 datatables in ASP.NET with C#?

DataTable dt1 = new DataTable();
       dt1.Columns.Add("ID", typeof(int));
       dt1.Columns.Add("Name", typeof(string));
       dt1.Columns.Add("Address", typeof(string));
       dt1.Columns.Add("Phone", typeof(float)); // float

       DataTable dt2 = new DataTable();
       dt2.Columns.Add("ID", typeof(int));
       dt2.Columns.Add("Address", typeof(string));
       dt2.Columns.Add("Phone", typeof(string)); // string


       List<string> lst1 = new List<string>();
       List<string> lst2 = new List<string>();
       dt1.Columns.OfType<DataColumn>().ToList().ForEach(k => lst1.Add(k.ColumnName +"-" + k.DataType.Name));
       dt2.Columns.OfType<DataColumn>().ToList().ForEach(k => lst2.Add(k.ColumnName + "-" + k.DataType.Name));
       var result = lst1.Where(k => !lst2.Contains(k)).ToList(); // Name-string, Phone-single