OCR Line Breaks in Windows Forms TextBox
OCR text extracted with IronOCR can lose its line breaks when shown in a Windows Forms TextBox. The engine returns line feed characters (\n), but Windows expects a carriage return plus line feed (\r\n) to break a line, so the text renders as one run-on block.
Solution
1. Use AdvancedScan in 64-bit Mode
Reference the IronOCR.Extensions.AdvancedScan package for stronger OCR functionality, and run the application in 64-bit mode to avoid compatibility issues.
2. Normalize Line Breaks in the OCR Output
Replace every \n with \r\n before assigning the result to the TextBox. This gives Windows the carriage-return/line-feed pair it needs.
ocr.Language = OcrLanguage.ChineseSimplifiedBest;
using (var ocrInput = new OcrInput())
{
ocrInput.LoadImage(txtPath.Text);
ocrInput.Deskew();
var result = ocr.ReadScreenShot(ocrInput);
// Replace line feed with carriage return and line feed
string ocrText = result.Text.Replace("\n", "\r\n");
// Display the corrected text in a TextBox
textBox1.Text = ocrText;
}result.Text.Replace("\n", "\r\n") does the conversion; the rest of the block loads the image, deskews it, and reads the screenshot.
3. Test and Verify
Run the extraction again and confirm the TextBox content matches the original layout, line breaks included.
Original image:
Before:
After:
Curtis Chau holds a Bachelor’s degree in Computer Science (Carleton University) and specializes in front-end development with expertise in Node.js, TypeScript, JavaScript, and React. Passionate about crafting intuitive and aesthetically pleasing user interfaces, Curtis enjoys working with modern frameworks and creating well-structured, visually appealing manuals.
