No Overload for editgrid_click matches delegate 'system.eventhandler'

public void editgrid_click(object sender, DataGridCommandEventArgs e):



No Overload for editgrid_click matches delegate 'system.eventhandler'


This is the error i am getting for the editgrid_click event of gridview1.
I have called this event as below.
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="Button1" runat="server" Text="edit" OnClick="editgrid_click" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField></asp:TemplateField>

Please help