Gets or sets the error correction level of this control. PDF417 symbology supports 9 levels of error correction, with 0 being the least thorough and 8 being the most thorough. When the correction level is set to 0, very little redundant information is encoded and the scanner can perform little more than correct for the very simplest of errors. When set to 8, significant scanning problems can be corrected. The default error correction for PDF417 is 'auto.' This automatically specifies a correction level based on the amount of information encoded into each PDF417 symbol.

'宣言
 
Public Overridable Property ErrorCorrectionLevel As System.Integer

public virtual System.int ErrorCorrectionLevel {get; set;}