EditCommand Event
Fired when the Edit button is clicked for an item in the RadGrid control.
Event Parameters
- 
(object)sender- The control that fires the event
 
 - 
(GridCommandEventArgs)e- 
Event arguments
- 
(boolean)e.CanceledIf set to True the event will be canceled.
 - 
(object)e.CommandArgumentArguments that are set to the Control's CommandName property. (Usually Button but it could be other Control in the Template)
 - 
(string)e.CommandNameName defined in the CommandName property of the Control.
 - 
(object)e.CommandSourceThe Control that fired the Command for the Grid.
 - 
(GridItem)e.ItemGets the Item containing the command source. Can be any of the Grid items that Inherit the
GridItemclass (e.g. GridDataItem, GridCommandItem, GridHeaderItem, GridFilteringItem, GridEditFormItem, etc...) 
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Attaching the event
In the Markup
<telerik:RadGrid ID="RadGrid1" runat="server" OnEditCommand="RadGrid1_EditCommand">
</telerik:RadGrid>
In the Code behind
protected void Page_Init(object sender, EventArgs e)
{
    RadGrid1.EditCommand += RadGrid1_EditCommand;
}The event handler
protected void RadGrid1_EditCommand(object sender, GridCommandEventArgs e)
{
    bool canceled = e.Canceled;
    object commandArguments = e.CommandArgument;
    string commandName = e.CommandName;
    object commandSource = e.CommandSource;
    GridItem item = e.Item;
}