ASPxGridView1沒有自帶的單擊，雙擊事件，所以要自己寫，
<script language="javascript" type="text/javascript"><!--
function OnGridFocusedRowChanged() {
var t = grid.GetRowValues(grid.GetFocusedRowIndex(), 'sheet_no', OnGetRowValues); }
function OnGetRowValues(values) {
var notes = document.getElementById("<%=grid.ClientID%>");
notes.value = values;
alert(values.tostring());
}
//-->
</script>然後，下面紅色地方，加入此代碼就可以啦
<dx:ASPxGridView ID="grid" runat="server" KeyFieldName="sheet_no" AutoGenerateColumns="False"
ClientIDMode="AutoID" OnSelectionChanged="Page_Load" OnDataBound="grid_DataBound"
OnFocusedRowChanged="grid_FocusedRowChanged" OnDetailRowExpandedChanged="grid_DetailRowExpandedChanged"
OnDetailsChanged="grid_DetailsChanged" Width="490px">
<ClientSideEvents FocusedRowChanged="function(s, e) { }" RowClick="function(s, e) {
OnGridFocusedRowChanged();
}" />
<Columns>FocusedRowChanged 選中值改變事件
RowClick 單擊事件
RowDbClick 雙擊事件