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    <p>Just to extend this question, there's also another way to add a row to a <code>DataGridView</code>, especially if the columns are always the same:</p> <pre><code>object[] buffer = new object[5]; List&lt;DataGridViewRow&gt; rows = new List&lt;DataGridViewRow&gt;(); foreach (SaleItem item in this.Invoice.SaleItems) { buffer[0] = item.Quantity; buffer[1] = item.Part.Description; buffer[2] = item.Price; buffer[3] = item.Quantity * item.Price; buffer[4] = item.Part.Number; rows.Add(new DataGridViewRow()); rows[rows.Count - 1].CreateCells(gridViewParts, buffer); } gridViewParts.Rows.AddRange(rows.ToArray()); </code></pre> <p>Or if you like ParamArrays:</p> <pre><code>List&lt;DataGridViewRow&gt; rows = new List&lt;DataGridViewRow&gt;(); foreach (SaleItem item in this.Invoice.SaleItems) { rows.Add(new DataGridViewRow()); rows[rows.Count - 1].CreateCells(gridViewParts, item.Quantity, item.Part.Description, item.Price, item.Quantity * item.Price, item.Part.Number ); } gridViewParts.Rows.AddRange(rows.ToArray()); </code></pre> <p>The values in the buffer need to be in the same order as the columns (including hidden ones) obviously.</p> <p>This is the fastest way I found to get data into a <code>DataGridView</code> without binding the grid against a <code>DataSource</code>. Binding the grid will actually speed it up by a significant amount of time, and if you have more then 500 rows in a grid, I strongly recommend to bind it instead of filling it by hand.</p> <p>Binding does also come with the bonus that you can keep the Object in tact, f.e. if you want to operate on the selected row, you can do this is the DatagridView is bound:</p> <pre><code>if(gridViewParts.CurrentRow != null) { SaleItem item = (SalteItem)(gridViewParts.CurrentRow.DataBoundItem); // You can use item here without problems. } </code></pre> <p>It is advised that your classes which get bound do implement the <code>System.ComponentModel.INotifyPropertyChanged</code> interface, which allows it to tell the grid about changes.</p>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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