You can display for the user or hide from the user the filter indicators that may appear in the column headers.
Using Code
Here is an example of hiding the filter indicator in code.
Example
| C# |  Copy Code |
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FpSpread1.Sheets[0].Columns[0].ShowFilterIndicator = false;
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| VB | Copy Code |
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FpSpread1.Sheets(0).Columns(0).ShowFilterIndicator = False
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Return to Setting the Appearance of Filter Indicators.