fix bug that TextResult.Exception is null not ""

DMGithubPublisher · DMGithubPublisher · commit 1acc2eeabcaf · 2021-10-26T13:59:18.000+08:00
diff --git a/samples/UseCases/ProcessDocumentsByBarcodes/Form1.cs b/samples/UseCases/ProcessDocumentsByBarcodes/Form1.cs
@@ -419,7 +419,7 @@ private void DoSplit(string strFile, string strOutputFolder, TextResult[] barcod
                     {
                         separators.Add(result.LocalizationResult.PageNumber);
                         string strBarcodeText = result.BarcodeText;
-                        if (result.Exception != "" && !result.Exception.Contains(((int)EnumErrorCode.DMERR_TRIAL_LICENSE).ToString()))
+                        if (result.Exception != null && !result.Exception.Contains(((int)EnumErrorCode.DMERR_TRIAL_LICENSE).ToString()))
                             strBarcodeText = strBarcodeText.Substring(strBarcodeText.IndexOf("]") + 2);
                         values.Add(strBarcodeText);
                     }

Original file line number	Diff line number	Diff line change
`@@ -419,7 +419,7 @@ private void DoSplit(string strFile, string strOutputFolder, TextResult[] barcod`
`419`	`419`	`{`
`420`	`420`	`separators.Add(result.LocalizationResult.PageNumber);`
`421`	`421`	`string strBarcodeText = result.BarcodeText;`
`422`		`- if (result.Exception != "" && !result.Exception.Contains(((int)EnumErrorCode.DMERR_TRIAL_LICENSE).ToString()))`
	`422`	`+ if (result.Exception != null && !result.Exception.Contains(((int)EnumErrorCode.DMERR_TRIAL_LICENSE).ToString()))`
`423`	`423`	`strBarcodeText = strBarcodeText.Substring(strBarcodeText.IndexOf("]") + 2);`
`424`	`424`	`values.Add(strBarcodeText);`
`425`	`425`	`}`