ClientScript.RegisterForEventValidation and __doPostBack()

Question

I'm trying to register some buttons for event registration because I keep getting the "Invalid postback or callback argument". Since I'm passing the buttons' events manually through __doPostBacks(), due to client-side validation, I think it has something to do with that.

I overrode Render to use RegisterForEventValidation like this:

protected override void  Render(HtmlTextWriter writer)
{
    ClientScript.RegisterForEventValidation(btnNuevo.UniqueID);
    ClientScript.RegisterForEventValidation(btnBorrar.UniqueID);
    ClientScript.RegisterForEventValidation(btnEditar.UniqueID);
    ClientScript.RegisterForEventValidation(btnAlquilar.UniqueID); 
    base.Render(writer);
}

But the __doPostBacks on the client-side .aspx page are written like this:

...
__doPostBack('<%= btnNuevo.UniqueID %>', "");
...
__doPostBack('<%= btnBorrar.UniqueID %>', selected.childNodes[0].innerText);
...
__doPostBack('<%= btnEditar.UniqueID %>', index);
...
__doPostBack('<%= btnAlquilar.UniqueID %>', indexaux);

where selected.childNodes[0].innerText, index and indexaux are strings. This still throws that Exception.

I know there's an overload of RegisterForEventValidation where you pass it a key for the control, and the arguments.

The thing is, I don't know how to write that. I'm not suppossed to know fore-hand what the argument is going to be, since selecter, index and indexaux depend on the user interaction with the page (namely, selecting a row in a GridView). The only examples I find are those where the argument is always the same, so they just write RegisterForEventValidation("nameOfControl", "XXXX"), where "XXXX" is a fixed string.

Any ideas regarding how to write this, or if this isn't the problem?

Thanks.

Answer 1

我不知道您是否设置了这种方法，但是可以在page指令中将EnableEventValidation设置为false：

<%@ Page Language="C#" EnableEventValidation="false" ... %>