As explained here
http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.datasource.aspx[
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The
DataGridView
class supports the standard Windows Forms data-binding model. This means the data source can be of any type that implements one of the following interfaces:
The
IList
interface, including
one-dimensional arrays
.
The
IListSource
interface, such as the DataTable and DataSet classes.
The
IBindingList
interface, such as the BindingList<t> class.
The
IBindingListView
interface, such as the BindingSource class.
The
Array
class implements
IList
interface. Hence, you can set
DataGridView.DataSource
to your array.