Code to check PDFs for security settings

private void btnAnalyseFile_Click(object sender, EventArgs e)
{
string[] item1 = { "Filename", "Filesize", "Author", "Title", "Subject", "Keywords",
"Creator", "Producer", "PDFVersion", "PageCount", "CreationDate", 
"ModificationDate", "DocumentID", "PasswordType", "UsageRights", 
"UsageRightsSignature" }; 
 
string[] item2 = { "Security Method", "User Password", "Master Password", "Printing", "Changing the Document", 
"Content Copying or Extraction", "Authoring Comments and Form Fields", "Form Field Fill-in or Signing", 
"Content Accessibility Enabled", "Document Assembly", "Encryption Level" }; 
 
string[] result = { "None", "Adobe Standard Security", "No", "Yes", "Fully Allowed", "Not Allowed", "Allowed", 
"40-bit RC4 (Acrobat 3.x, 4.x)", "128-bit RC4 (Acrobat 5.x)", "Unknown", "Low resolution", 
"Blank", "128-bit AES (Acrobat 7.x)" }; 
 
string s; 
int ret; 
 
//////////////////////////// 
 
if (openFileDialog1.ShowDialog() == DialogResult.OK) 
{ 
string msg = "Results from Ananysis()\n"; 
 
int aid = DPL.AnalyseFile(openFileDialog1.FileName, ""); 
 
for (int i = 0; i <= 15; i++) 
{ 
string s1 = DPL.GetAnalysisInfo(aid, i); 
msg += String.Format("[{0}]{1} = {2}\n", i, item1[i], s1); 
} 
 
for (int i = 0; i <= 10; i++) 
{ 
string s1 = DPL.GetAnalysisInfo(aid, i + 20); 
msg += String.Format("[{0}]{1} = [{2}]{3}\n", i, item2[i], s1, result[int.Parse(s1)]); 
} 
DPL.DeleteAnalysis(aid); 
 
///////////////////////////// 
 
ret = DPL.LoadFromFile(openFileDialog1.FileName, ""); 
msg += "\n\nResults from SecurityInfo()\n"; 
 
for (int i = 0; i <= 10; i++) 
{ 
ret = DPL.SecurityInfo(i); 
 
s = String.Format("[{0}]{1} = [{2}]{3}\n", i, item2[i], ret, result[ret]); 
msg += s; 
} 
MessageBox.Show(msg);
}
}