关于SqlDataSource控件中的ControlParameter的问题

Question

具体代码如下

<asp:SqlDataSource
        id="srcEmployeeDetails"
        ConnectionString="<%$ ConnectionStrings:Employees %>"
        SelectCommand="SELECT * FROM Employees
            WHERE FirstName=@FirstName AND LastName=@LastName"
        Runat="server">
        <SelectParameters>
        <asp:ControlParameter
            Name="FirstName"
            ControlID="grdEmployees"
            PropertyName='SelectedDataKey("FirstName")' />  
        <asp:ControlParameter
            Name="LastName"
            ControlID="grdEmployees"
            PropertyName='SelectedDataKey("LastName")' />  
        </SelectParameters>
     </asp:SqlDataSource> 

貌似是PropertyName='SelectedDataKey("FirstName")'这个地方用()和[]都没有错误,这是为什么呢?这个地方应该是个索引器,索引器不是应该用中括号么?

Answer 1

你应该还有一个gridview的吧