Hi,
i want to update salutatieon at my name, i have gender__c check box =true ,that needs to be update 'Mr.'     if it is false need to updated with 'Miss.'
im achieving that but while updating the existing record i cant replacing 'Mr.' with 'Miss.'
like gender__c=true;
kindly check this 

thank you.

trigger genderupdate1 on stdnt__c(before insert,before update)
{
list<stdnt__c> st_list=trigger.new;
for(stdnt__c st:st_list)
{
if(trigger.isinsert)
{
  if(st.gender__c==true)
  {
  st.name='Mr.'+st.name;
  }
  else
  {
  st.name='Miss.'+st.name;
  }}
if(trigger.isupdate)
{
  if(st.gender__c==true)
  {
   if(((String)st.name).startsWith('Mr.'))
   {
   st.name=st.name;
   }
   else
   {
   st.name='Mr.'+st.name;
   }}
  if(st.gender__c==false)
  {
   if(((String)st.name).startsWith('Miss.'))
   {
   st.name=st.name;
   }
   else
   {
   st.name='Miss.'+st.name;
   }}
}}}

Hi,
i want to update salutatieon at my name, i have gender__c check box =true ,that needs to be update 'Mr.'     if it is false need to updated with 'Miss.'
im achieving that but while updating the existing record i cant replacing 'Mr.' with 'Miss.'
like gender__c=true;
kindly check this 

thank you.

trigger genderupdate1 on stdnt__c(before insert,before update)
{
list<stdnt__c> st_list=trigger.new;
for(stdnt__c st:st_list)
{
if(trigger.isinsert)
{
  if(st.gender__c==true)
  {
  st.name='Mr.'+st.name;
  }
  else
  {
  st.name='Miss.'+st.name;
  }}
if(trigger.isupdate)
{
  if(st.gender__c==true)
  {
   if(((String)st.name).startsWith('Mr.'))
   {
   st.name=st.name;
   }
   else
   {
   st.name='Mr.'+st.name;
   }}
  if(st.gender__c==false)
  {
   if(((String)st.name).startsWith('Miss.'))
   {
   st.name=st.name;
   }
   else
   {
   st.name='Miss.'+st.name;
   }}
}}}