System.Web.UI.WebControls Namespace   DataGrid Class

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Occurs when a button within a DataGrid control is clicked.

[ VB ]
Public Event ItemCommand As DataGridCommandEventHandler

[ C# ]
public event DataGridCommandEventHandler ItemCommand;

[ C++ ]
public: __event DataGridCommandEventHandler* ItemCommand;

In [ JScript ], you can handle the events defined by a class, but you cannot define your own.

The ItemCommand event is raised whenever any button associated with an item in the DataGrid is clicked. This provides for programmatically determining which specific command button is clicked and take appropriate action. This event is commonly used to handle button controls with a given CommandName value in the DataGrid control.

Information related to the ItemCommand event is passed via a DataGridCommandEventArgs object to the method assigned to handle the event. The following DataGridCommandEventArgs properties provide information specific to this event.

Property	Description
CommandSource	Gets the source of the command.
Item	Gets the DataGridItem associated with the event.

The following example illustrates a way to handle the ItemCommand event of a DataGrid. Information about the selected item is displayed whenever any of the LinkButton controls within the DataGrid is clicked.

The below snippet shows how to attach a handler for the event.

<asp:datagrid id = "myDataGrid" runat = "server" onItemCommand = "showItem" ... >

The below shows how the handler method is defined.

void showItem ( Object src, DataGridCommandEventArgs e ) {
   myDataGrid.SelectedIndex = e.Item.ItemIndex;
   string query = "SELECT * FROM nw_Employees";
   myDataGrid.DataSource = fetchData ( query, "northwind" );
   myDataGrid.DataBind ( );
}

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