Parameters
- columnIndex
- The index of first cell.
- columnCount
- The column count.
Return Value
The sum of cell widths.
| Exception | Description |
|---|---|
| System.ArgumentOutOfRangeException | Thrown if columnIndex or columnCount is negative. |
Target Platforms: .NET 10; .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5