在数据网格视图中为每一行添加一个额外的列，并为其赋值

Question

I have a DataGridView called dataGridView1 that populates on form load. How do I add an extra column to the end with a date time stamp of "now" and make sure this Created column is on the end or the row?

I have tried:

dataGridView1.Columns.Add("Created","GETDATE()");

I populate the dataGridView1 like this:

private void DisplayAppropriateMessage(FacebookOAuthResult facebookOAuthResult)
{
    if (facebookOAuthResult != null)
    {
        if (facebookOAuthResult.IsSuccess)
        {
            var fb = new FacebookClient(facebookOAuthResult.AccessToken);

            dynamic result = fb.Get("/me");
            var name = result.name;

            {

                var query = string.Format(@"SELECT uid, username, first_name, last_name, friend_count, pic_big 
                        FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1 = me())");

                dynamic parameters = new ExpandoObject();
                parameters.q = query;
                dynamic results = fb.Get("/fql", parameters);

                List<MyFriends> q = JsonConvert.DeserializeObject<List<MyFriends>>(results.data.ToString());

                dataGridView1.DataSource = q;
       }
        }
        else
        {
            MessageBox.Show(facebookOAuthResult.ErrorDescription);
        }
    }
}

Answer 1

List<MyFriends> q contains data returned by facebook.

You store it as MyFriends type (which BTW should be called MyFriend because each object stores data about one of your friends). Then you display this list of friends in datagridview . I don't know how you configured gridview but If I remember well it can create columns from displayed object's properties automatically or you can define them on your own.

So solution is to add property to MyFriends type with name Created and after you get results from Facebook just iterate over results and set their Created property to DateTime.Now . Depending on how you configured datagridview you will have to add column to it or not.