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Gets or sets the standard width, in points, for columns in the worksheet.
This value represents the worksheet's default column width setting.
double StandardWidth { get; set; }
Property StandardWidth As Double
worksheet.Range["A:A"].UseStandardWidth = true;
worksheet.StandardWidth = 72.0;
double standardWidth = worksheet.StandardWidth;
double firstColumnWidth = worksheet.Range["A:A"].ColumnWidth;