C#

private void ApplyChanges()
{
//check if the destination folder in the textbox is blank in order to save a single image
//using the Save-file dialog feature.
if(txtBoxOut.Text.Equals("")
{
  //write the title to the image by calling a write method

  //show the save file dialog and check if result is OK.
   //call the custom save method 
    if(sfd.ShowDialog()==DialogResult.OK)
    {
        
       this.SaveTheImage(sfd.FileName,this.bmp);
    }
  
}
else if(txtBoxOut.Text != "")
{

   string destFolder = txtBoxOut.text
   foreach(string filePath in filePaths)
   {
      this.bmp = Image.FromFile(filePath);
      string fileName = Path.GetFileName(filePath);
      
     try 
     {

       //write the title to the global image

       //check folder
      if(destFolder.EndsWith("\\")
      {
        //use the inbuilt save method
        this.bmp.Save(destFolder+fileName+ImageFormat.Jpeg);
      }
      else
      {
        this.bmp.Save(destFolder+"\\"+fileName+ImageFormat.Jpeg);
        
      }

     }
     catch(Exception e)
     {

        Console.WriteLine(e.message.ToString());
     }

   }
 }
}