新增和格式化表格

//Using statement for ExcelTable and TableStyles
using OfficeOpenXml.Table;

//Defining the tables parameters
int firstRow =1;
int lastRow = worksheet.Dimension.End.Row;
int firstColumn = 1;
int lastColumn = worksheet.Dimension.End.Column;
ExcelRange rg = worksheet.Cells[firstRow, firstColumn, lastRow, LastColumn];
string tableName = "Table1";

//Ading a table to a Range
ExcelTable tab = worksheet.Tables.Add(rg, tableName);

//Formating the table style
tab.TableStyle = TableStyles.Light8;