如何从OnActionExecuting操作过滤器返回值

Question

this is my API action filter,i want to be able to return the ccaccount obj

on good login result to the calling method

any idea how ?

thanks

   public class CAPILoginFilter : ActionFilterAttribute
    {
        public override void OnActionExecuting(HttpActionContext i_actionContext)
        {
            CRequestBase request = (CRequestBase)i_actionContext.ActionArguments["i_request"];

            CCAccount account = CAPILogin.AccountIDGetOBJ(request.UserName, request.Password);

            if(account == null)
            {
                throw new HttpResponseException(new HttpResponseMessage(HttpStatusCode.Unauthorized));
            }
            else
            {
                //return account object to calling method here
            }

        }
    }

Answer 1

It is not possible to pass a value back from OnActionExecuting but you can set properties in the OnActionExecuting event that can be read by the method that caused it to fire.

In your OnActionExecuting event create a new property on request object.

context.Request.Properties["X"] = variableX;

This will be readable by the method that caused the event to fire like this

if (this.Request.Properties.ContainsKey("X"))
{
string x = this.Request.Properties["X"].ToString();

    // Use x here
}

Dave