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copied!<p><em>You don't need ADO.NET DataTables when you don't use database</em>. Just add gridview to your form. Select your gridview, and at the bottom of properties window you'll see two links <code>Add Column...</code>, <code>Edit Columns...</code>. You can add required columns and set their types here.</p> <p>Assume you have following class:</p> <pre><code>public class City { public string Name { get; set; } public string Country { get; set; } public string CountryCode { get; set; } public string State { get; set; } } </code></pre> <p>Add four columns of type DataGridViewTextBoxColumn to your GridView with headers <code>Country:</code>, <code>Country Code:</code>, <code>State:</code>, <code>City:</code> (you can make columns readonly). Then go to <code>Edit Columns</code> and specify for each column DataPropertyName. It should be property name of your City class, to which column will be bound. E.g. it should be <code>Name</code> property for column <code>City</code>.</p> <p>Then create list of cities and assign it to GridView:</p> <pre><code>BindingList<City> cities = new BindingList<City>() { new City() { Name = "Carros", Country = "France", CountryCode = "FRA" }, new City() { Name = "Barcelona", Country = "Spain", State = "Catalonia" } }; dataGridView.DataSource = cities; </code></pre> <p>If you will use <code>BindingList</code> instead of simple <code>List</code>, then changes on your cities list will affect data in DataGrid (i.e. when you add or remove cities):</p> <pre><code>void ButtonAddCity_Click(object sender, EventArgs e) { cities.Add(new City() { Name = nameTextBox.Text, Country = countryTextBox.Text, CountryCode = codeTextBox.Text, State = stateTextBox.Text }); } </code></pre>

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