Hi All,

i have written the below VF page and the controller class code to fecth the records based on two fields that is Date and Language input bythe user in the VF page, but my custom controller class does not seem to work properly and is throwing a null point exception, Can anybody help correct this. The Null pointer issue is being thirown at line  Mlist.add(Ml);

VF page
============================================================
<apex:page sidebar="false" showHeader="false" standardController="Ticket_transaction__c" extensions="MovieController">
<apex:form >
{!Ticket_transaction__c.Movie_Date__c}
 
  <apex:sectionHeader title="Movie Select Page"/>
  <apex:pageblock title="Movie Preference">
  <apex:pageblockSection title="Movie Language Preference" collapsible="false">
  <apex:inputField value="{!tc.Language_preference__c}"/>
  </apex:pageblockSection>
  <apex:pageblockSection title="Movie Date" collapsible="false">
  <apex:inputfield Value="{!tc.Movie_Date__c}" id="MovieDate" />
  <br/><br/>
  <apex:commandButton value="Display Movies.." action="{!MovieList}" />
  <br/><br/>
        <apex:pageBlockTable value="{!Mlist}" var="M" id="Table">
            <apex:column value="{!M.Movie__c}"/>
            <apex:column value="{!M.Theater__c}"/>
            <apex:column value="{!M.Show_TIme__c}"/>
            <apex:column value="{!M.Movie_Language__c}"/>
        </apex:pageBlockTable>
  </apex:pageblockSection>
  </apex:pageblock>
 </apex:form>
</apex:page>
====================================================================

Custom controller
====================================================================
public class MovieController {
 public MovieController(ApexPages.StandardController controller) {
        tc = new Ticket_transaction__c();
    }

public string Language{get;set;}
public Date MovieDate{get;set;}
public Ticket_transaction__c tc{get;set;}
public list<Movie_at_Theater__c> Mlist{get;set;}
public Movie_at_Theater__c Query{get;set;}
public void MovieList()
{
    
  //  Query = new Movie_at_Theater__c();
       System.debug('Language'+tc.Language_preference__c);
   if(tc.Language_preference__c==null){

       System.debug('Date movie'+tc.Movie_Date__c);
       try{
           Mlist = [Select Movie__c, Theater__c, Show_TIme__c, Movie_Language__c, Movie_Date__c from Movie_at_Theater__c where Movie_Date__c=:tc.Movie_Date__c];
       }catch(System.QueryException qe){
           System.debug('Exception'+qe);
       }
             System.debug('MOvies List'+Mlist);
   } 
else
{
    
    list<Movie_at_Theater__c>Templist = [Select Movie__c, Theater__c, Show_TIme__c, Movie_Language__c, Movie_Date__c from Movie_at_Theater__c where Movie_Date__c=:tc.Movie_Date__c]; 
 for( Movie_at_Theater__c Ml : Templist)
 {

     If(tc.Language_preference__c==Ml.Movie_Language__c)
    
 {
   Mlist.add(Ml);  
 }
         System.debug('MOvies List'+Mlist);
 }  
}
}
}