How do I exit from a function

Question

i know that in vb net you can just do Exit Sub  but i would like to know how do i exit a click event in a button   here s my code   private void button1 Click object sender  EventArgs e        if  textBox1 Text          textBox2 Text          textBox3 Text                        exit this event

User · Answer

Use the return keyword   return    exit this event

User · Answer

return     Prematurely return from the method  same keword works in VB  by the way

User · Answer

Yo can simply google for  exit sub in c     Also why would you check every text box if it is empty  You can place requiredfieldvalidator for these text boxes if this is an asp net app and check if Page IsValid   Or another solution is to get not of these conditions   private void button1 Click object sender  EventArgs e        if    textBox1 Text          textBox2 Text          textBox3 Text                         do events           And better use String IsNullOrEmpty   private void button1 Click object sender  EventArgs e        if    String IsNullOrEmpty textBox1 Text         String IsNullOrEmpty textBox2 Text         String IsNullOrEmpty textBox3 Text                    do events

User · Answer

Use the return keyword   From MSDN      The return statement terminates   execution of the method in which it   appears and returns control to the   calling method  It can also return the   value of the optional expression  If   the method is of the type void  the   return statement can be omitted    So in your case  the usage would be   private void button1 Click object sender  EventArgs e        if  textBox1 Text          textBox2 Text          textBox3 Text                      return    exit this event

User · Answer

There are two ways to exit a method early  without quitting the program    i  Use the return keyword  ii  Throw an exception   Exceptions should only be used for exceptional circumstances - when the method cannot continue and it cannot return a reasonable value that would make sense to the caller  Usually though you should just return when you are done   If your method returns void then you can write return without a value   return

User · Answer

Use the return statement   MSDN Reference

User · Answer

I d suggest trying to avoid using return exit if you don t have to   Some people will devoutly tell you to NEVER do it  but sometimes it just makes sense   However if you can structure you checks so that you don t have to enter into them  I think it makes it easier for people to follow your code later

[c#] How do I exit from a function?

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