[SalesForce] Visualforce Error – “INVALID_TYPE_ON_FIELD_IN_RECORD”, “value not of required type:”

Finally I am able to resolve the case. I had not mentioned curly bracket for each IF Statement in try block

That was giving error. Below code is error free.

public List<ZIS_Quote_Source__c> selectedItem(String quoteid,Integer idx)
         {

          List<ZIS_Quote_Source__c>  qtSource=[Select id,name,Item_Description__c,Valid_for_approval__c,Valid_for_approval2__c,Valid_for_approval3__c,Item_Line__c,Item__c,ZISQuote__c,ZISQuote__r.Total_Unit_price__c,ZISQuote__r.Status__c,ZISQuote__r.id,ZISQuote__r.name,ZISQuote__r.ZI_Supplier__r.Code__c,ZISQuote__r.ZI_Supplier__r.Supplier_Code__c,ZISQuote__r.ZI_Supplier__r.name,ZISQuote__r.ZI_Supplier__r.Performance_Rate__c,Unit_Price__c from ZIS_Quote_Source__c where ZISQuote__c=:quoteid  ORDER BY Item_Line__c];
                                Integer k=0;
            for(QuotedetailwrapperClass dw:detailwrapperList)
            { 
            try{

                if(idx==1){
                qtSource[k].Valid_for_approval__c=dw.supp1chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp1chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp1chkbx3;
            }
                if(idx==2){
                qtSource[k].Valid_for_approval__c=dw.supp2chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp2chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp2chkbx3;
            }
                if(idx==3){
                qtSource[k].Valid_for_approval__c=dw.supp3chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp3chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp3chkbx3;
                }
                if(idx==4){
                qtSource[k].Valid_for_approval__c=dw.supp4chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp4chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp4chkbx3;
            }
                if(idx==5){
                qtSource[k].Valid_for_approval__c=dw.supp5chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp5chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp5chkbx3;
            }
                if(idx==6){
                qtSource[k].Valid_for_approval__c=dw.supp6chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp6chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp6chkbx3;
            }
                if(idx==7){
                qtSource[k].Valid_for_approval__c=dw.supp7chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp7chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp7chkbx3;
            }
                if(idx==8){
                qtSource[k].Valid_for_approval__c=dw.supp8chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp8chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp8chkbx3;
            }
                if(idx==9){
                qtSource[k].Valid_for_approval__c=dw.supp9chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp9chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp9chkbx3;
                }
            if(idx==10){
                qtSource[k].Valid_for_approval__c=dw.supp10chkbx;
                qtSource[k].Valid_for_approval2__c=dw.supp10chkbx2;
                qtSource[k].Valid_for_approval3__c=dw.supp10chkbx3;
            }            
            if(idx==11){
                qtSource[k].Valid_for_approval__c=dw.supp11chkbx;
            }            
            if(idx==12){
                qtSource[k].Valid_for_approval__c=dw.supp12chkbx;
            }
                if(idx==13){
                qtSource[k].Valid_for_approval__c=dw.supp13chkbx;
            }
                if(idx==14){
                qtSource[k].Valid_for_approval__c=dw.supp14chkbx;
            }
                if(idx==15){
                qtSource[k].Valid_for_approval__c=dw.supp15chkbx;
            }
                if(idx==16){
                qtSource[k].Valid_for_approval__c=dw.supp16chkbx;
            }
                if(idx==17){
                qtSource[k].Valid_for_approval__c=dw.supp17chkbx;
            }
                if(idx==18){
                qtSource[k].Valid_for_approval__c=dw.supp18chkbx;
            }
                if(idx==19){
                qtSource[k].Valid_for_approval__c=dw.supp19chkbx;
            }
                if(idx==20){
                qtSource[k].Valid_for_approval__c=dw.supp20chkbx;
            }
                system.debug('****dw.supp1chkbx****'+dw.supp1chkbx);
                system.debug('****dw.supp1chkbx2****'+dw.supp1chkbx2);
                system.debug('****dw.supp1chkbx3****'+dw.supp1chkbx3);
                 }catch(Exception e){

                 }
             k++;
            }

            system.debug('****&&&&&&&&&&&&****'+qtSource);

            update  qtSource;
                system.debug('****&&&&&&&&&&&&****');
                system.debug('****&&&&&&&&&&&****'+qtSource[0].Valid_for_approval2__c);
                system.debug('****&&&&&&&&&&&&****'+qtSource[0].Valid_for_approval3__c);   
         return qtSource;
         }

         ///////////////////////DoSave Method//////////////////////
         public void doSave(){
        // selectedItem();
         Integer c=0;

         for(ZI_Quote__c qtcmmnt:quotelst){
         c++;
             if(c==1){
            qtcmmnt.Approval_Comment__c =supplier1comment;   
                    }
             if(c==2){
            qtcmmnt.Approval_Comment__c =supplier2comment;   
                }
                if(c==3){
            qtcmmnt.Approval_Comment__c =supplier3comment;   
                }
                 if(c==4){
            qtcmmnt.Approval_Comment__c =supplier4comment;   
                    }
             if(c==5){
            qtcmmnt.Approval_Comment__c =supplier5comment;   
                }
                if(c==6){
            qtcmmnt.Approval_Comment__c =supplier6comment;   
                }
                 if(c==7){
            qtcmmnt.Approval_Comment__c =supplier7comment;   
                    }
             if(c==8){
            qtcmmnt.Approval_Comment__c =supplier8comment;   
                }
                if(c==9){
            qtcmmnt.Approval_Comment__c =supplier9comment;   
                }
                 if(c==10){
            qtcmmnt.Approval_Comment__c =supplier10comment;   
                    }
             if(c==11){
            qtcmmnt.Approval_Comment__c =supplier11comment;   
                }
                if(c==12){
            qtcmmnt.Approval_Comment__c =supplier12comment;   
                }
                 if(c==13){
            qtcmmnt.Approval_Comment__c =supplier13comment;   
                    }
             if(c==14){
            qtcmmnt.Approval_Comment__c =supplier14comment;   
                }
                if(c==15){
            qtcmmnt.Approval_Comment__c =supplier15comment;   
                }
                 if(c==16){
            qtcmmnt.Approval_Comment__c =supplier16comment;   
                    }
             if(c==17){
            qtcmmnt.Approval_Comment__c =supplier17comment;   
                }
                if(c==18){
            qtcmmnt.Approval_Comment__c =supplier18comment;   
                }
                if(c==19){
            qtcmmnt.Approval_Comment__c =supplier19comment;   
                }
                if(c==20){
            qtcmmnt.Approval_Comment__c =supplier20comment;   
                }
                selectedItem(qtcmmnt.id,c);
         }
         update quotelst;




         }