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Technically speaking, a column has width attribute and row can have height attribute and with current release of Aspose.Pdf for .NET, you can specify the columns width information and also set the row height information. Furthermore, you can get page dimensions and set row height and column width information dynamically. Please visit the following link for further details on
PS, typically column width information can be specified using table1.ColumnWidths = “100 100 100”; where 100 represents 100 points width factor.