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Gets or sets the standard width, in pixels, for columns in the worksheet.
This value represents the worksheet's default column width setting in pixel units.
double StandardWidthInPixel { get; set; }
Property StandardWidthInPixel As Double
worksheet.Range["A:A"].UseStandardWidth = true;
worksheet.StandardWidthInPixel = 80;
double standardWidthInPixel = worksheet.StandardWidthInPixel;
double firstColumnWidthInPixel = worksheet.Range["A:A"].ColumnWidthInPixel;