Object reference not set to an instance of an object. pagina asp

[andresito0427]

Buenas tardes soy nuevo en el foro espero este pub licando en el lugar correcto mi problema es el siguiente:

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
uc_ucDetalleMiReserva.LlenarComboPagos(DropDownLis t ddlFormaPago) +52
uc_ucDetalleMiReserva.CargarReserva() +1852
uc_ucDetalleMiReserva.Page_Load(Object sender, EventArgs e) +164
System.Web.Util.CalliHelper.EventArgFunctionCaller (IntPtr fp, Object o, Object t, EventArgs e) +15
System.Web.Util.CalliEventHandlerDelegateProxy.Cal lback(Object sender, EventArgs e) +34
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +47
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061

Si alguien tiene alguna idea de por que sale el error me podria comentar para poner el resto del codigo sobre el cual genera el error gracias