c# - Databinding in WPF -

i having trouble databinding in text block.

what want whenever there exception occured in class want dispaly in text block reason not dispalying.

main.xaml

<window x:class="testingwpf.main"        <window.resources>         <objectdataprovider x:key="showerr" objecttype="{x:type   local:errorlog}"         methodname="geterror"/>             </window.resources>        <frame  name="frame1" width="620"/>        <button  name="button1"  click="button1_click">        <textblock name="txtblock6" text="{binding source={staticresource showerr}}"/>     </window> 

main.xaml.cs

    namespace testingwpf     {        public partial class main : window        {           private void button1_click(object sender, routedeventargs e)           {              frame1.source =new uri("/page1.xaml", urikind.relative);                }        }        public class errorlog        {          private string errorinfo { get; set; }          public string geterror(string errormessage)         {            return errorinfo =errormessage;         }       }    } 

page1.xaml

<page x:class="testingwpf.page1" <button  name="button1"  click="button1_click"> <button  name="button2"  click="button2_click"> </page> 

page1.xaml.cs

namespace testingwpf {     public partial class page1 : page      {         errorlog errorlog = new errorlog ();          private void button1_click(object sender, routedeventargs e)         {              somemethod1();         }          private void somemethod1()         {           try           {           }           catch(expection e)           {               errorlog.geterror(e.tostring());// not dispalying            }         }          private void button2_click(object sender, routedeventargs e)         {              somemethod2();         }          private void somemethod2()         {             class2 class2 = new class2();             class2.foo();           }      } } 

class2.cs

namespace testingwpf {     class class2     {         errorlog errorlog = new errorlog ();          public void foo()        {          try          {           }           catch(expection e)           {               errorlog.geterror(e.tostring());// not dispalying            }         }     } } 

where set error see geterror method returns same message pass it? either add parameterless geterror method or bind actual property of object creating, i.e. create publicly accessible property

error {get;set;} 

in errorlog class , set in seterror method, i.e.

 public string seterror(string errormessage)  {     error = errormessage;  }