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How to UnFreeze the Rows and Columns in XlsIO?
You can unfreeze rows and columns by using the property called RemovePanes. Please refer the below code snippet which illustrates this:
C#
sheet.Range[8, 1].FreezePanes(); sheet.RemovePanes();
VB
sheet.Range(8, 1).FreezePanes() sheet.RemovePanes()
Here is the sample for your reference: