1 private Outlook.Explorer _Explorers;
  2 
  3         private Outlook.Inspector _Inspectors;
  4 
  5         double TotalAttachSize;
  6 
  7         private void ThisAddIn_Startup(object sender, System.EventArgs e)
  8 
  9         {
 10 
 11            Outlook.Inspectors inspectors = this.Application.Inspectors;
 12 
 13             inspectors.NewInspector +=
 14 
 15                 new Outlook.InspectorsEvents_NewInspectorEventHandler(
 16 
 17                 Inspectors_NewInspector);
 18 
 19  
 20 
 21             foreach (Outlook.Inspector inspector in inspectors)
 22 
 23             {
 24 
 25                 TotalAttachSize = 0;
 26 
 27                 Inspectors_NewInspector(inspector);
 28 
 29             }
 30 
 31   
 32 
 33  
 34 
 35         }
 36 
 37  
 38 
 39         void Inspectors_NewInspector(Microsoft.Office.Interop.Outlook.Inspector Inspector)
 40 
 41         {
 42 
 43             if (Inspector.CurrentItem is Outlook.MailItem)
 44 
 45             {
 46 
 47  
 48 
 49                 Outlook.MailItem mail = (Outlook.MailItem)Inspector.CurrentItem;
 50 
 51  
 52 
 53                 mail.BeforeAttachmentAdd += new Microsoft.Office.Interop.Outlook.ItemEvents_10_BeforeAttachmentAddEventHandler(mail_BeforeAttachmentAdd);
 54 
 55                 mail.AttachmentAdd += new Microsoft.Office.Interop.Outlook.ItemEvents_10_AttachmentAddEventHandler(mail_AttachmentAdd);
 56 
 57                 
 58 
 59             }
 60 
 61        
 62 
 63         }
 64 
 65  
 66 
 67        
 68 
 69  
 70 
 71         void mail_AttachmentAdd(Microsoft.Office.Interop.Outlook.Attachment Attachment)
 72 
 73         {
 74 
 75             int MB = 1024*1024;
 76 
 77             MessageBox.Show(Attachment.Size.ToString() + "\n" + " Now Total Size limit reached is " + TotalAttachSize/MB + " MB");
 78 
 79         }
 80 
 81  
 82 
 83         void mail_BeforeAttachmentAdd(Microsoft.Office.Interop.Outlook.Attachment Attachment, ref bool Cancel)
 84 
 85         {
 86 
 87             TotalAttachSize =TotalAttachSize + Attachment.Size;
 88 
 89             if (TotalAttachSize > (1024 * 1024 * 10 ))
 90 
 91             {
 92 
 93                 MessageBox.Show("You have reached the total Attachment Size limit");
 94 
 95                 return;
 96 
 97             }
 98 
 99             
100 
101         }
  
   
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