c# 4.0 - Tableau d'octets à convertir en pdf avec code c# - Stack Overflow

I have a table with much more binary type column. I have to convert these byte array to pdf. I write this with c# codes as follows:

this.Cursor = Cursors.WaitCursor;
        using (CMEntities myEntity = new CMEntities())
        {
            myEntity.ContextOptions.LazyLoadingEnabled = false;
            var r = (from b in myEntity.FileDatas
                     orderby b.Oid
                     where b.Status == null
                     select b).Skip(Directory.GetFiles(@"D:\test\FromBinary\", "*.*", SearchOption.AllDirectories).Length).Take(500);
            button5.Text = Directory.GetFiles(@"D:\test\FromBinary\", "*.*", SearchOption.AllDirectories).Length.ToString();
            int i = 1;
            try
            {
                FileSystemStoreObject fileSystem = new FileSystemStoreObject();
                foreach (var item in r)
                {
                    byte[] a = item.Content;
                    File.WriteAllBytes(@"D:\test\FromBinary\" + item.Oid + "-" + item.FileName, a);
                    fileSystem.Oid = item.Oid;
                    fileSystem.FileName = item.FileName;
                    fileSystem.Size = item.size;
                    item.Status = 1;
                    myEntity.FileSystemStoreObjects.AddObject(fileSystem);
                    if (i == 500)
                    {
                        break;
                    }
                    i++;
                    fileSystem = new FileSystemStoreObject();
                }
                myEntity.SaveChanges();
            }
            catch { }
        }

but when my program begin working my some pdf files didn't open. I get error that this file demaged or.... How can I get healthy pdf file? Please help me.

I have a table with much more binary type column. I have to convert these byte array to pdf. I write this with c# codes as follows:

this.Cursor = Cursors.WaitCursor;
        using (CMEntities myEntity = new CMEntities())
        {
            myEntity.ContextOptions.LazyLoadingEnabled = false;
            var r = (from b in myEntity.FileDatas
                     orderby b.Oid
                     where b.Status == null
                     select b).Skip(Directory.GetFiles(@"D:\test\FromBinary\", "*.*", SearchOption.AllDirectories).Length).Take(500);
            button5.Text = Directory.GetFiles(@"D:\test\FromBinary\", "*.*", SearchOption.AllDirectories).Length.ToString();
            int i = 1;
            try
            {
                FileSystemStoreObject fileSystem = new FileSystemStoreObject();
                foreach (var item in r)
                {
                    byte[] a = item.Content;
                    File.WriteAllBytes(@"D:\test\FromBinary\" + item.Oid + "-" + item.FileName, a);
                    fileSystem.Oid = item.Oid;
                    fileSystem.FileName = item.FileName;
                    fileSystem.Size = item.size;
                    item.Status = 1;
                    myEntity.FileSystemStoreObjects.AddObject(fileSystem);
                    if (i == 500)
                    {
                        break;
                    }
                    i++;
                    fileSystem = new FileSystemStoreObject();
                }
                myEntity.SaveChanges();
            }
            catch { }
        }

but when my program begin working my some pdf files didn't open. I get error that this file demaged or.... How can I get healthy pdf file? Please help me.

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