Question

I have two list of different objects :

List<Report>
List<Newsletter>

each having a ‘created date’ property. I need to sort the created date of both lists in descending order and bind it to a gridview.

How can this be done, as i can provide only one datasource?

Answer 1

You could firstly create List of dates:

var rows = reports.Select(x => x.CreateDate).Union(news.Select(x => x.CreateDate)).OrderByDescending(x => x.Date).ToList();

And then use a DataTable structure for binding:

DataTable dt = new DataTable();
dt.Columns.Add("Date");

foreach (var row in rows) {
   dt.Rows.Add(row);
}
grid.DataSource = dt;