Generating CSV strings for various 3rd party utilities
I doubt you'll find a way of not listing all those properties without using reflection, but the following helps to eliminate that huge format string which is likely to become the source of bugs.

var properties = new Object[]
{
    this.BlockType,         //  1, A_NAME
    this.Tag,               //  2, A_TAG
    this.Description,       //  3, A_DESC
    this.InitialScan,       //  4, A_ISCAN
    this.AutoManual,        //  5, A_SCAN
    this.ScanTime,          //  6, A_SCANT
    this.IoDevice,          //  7, A_IODV
    this.IoAddress,         //  8, A_IOAD
    this.InitialAmStatus,   //  9, A_IAM
    this.AlarmPriority,     // 10, A_PRI
    this.AlarmEnable,       // 11, A_ENAB
    this.EnableOutput,      // 12, A_EOUT
    this.HistDescription,   // 13, A_HIST_DESC
    this.SecurityArea1      // 14, A_SECURITYAREA1
}.Select(x =&gt; String.Format("\u0022{0}\u0022", x));

return String.Join(",", properties);


A couple of things to note:

This is hardly an efficient way of doing it, but offers fairly maintainable code. If you have an extra property, just add it to the array.

This will only work in .NET 4.0. In earlier versions, you'll have to call ToArray() after that call to Select.