从DataTable导入
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开发人员可以通过调用Cells集合的ImportDataTable方法，从DataTable导入数据到其工作表。 ImportDataTable方法有许多重载版本，但是一个典型的重载需要以下参数：DataTable，表示需要导入内容的DataTable对象
- 是否显示字段名，指定是否将DataTable的列名导入到工作表作为第一行
- 起始单元格，表示从何处（即"A1"）导入DataTable的内容
//Instantiating a Workbook object
Workbook workbook = new Workbook();
//Adding a new worksheet to the Workbook object
int i = workbook.Worksheets.Add();
//Obtaining the reference of the newly added worksheet by passing its sheet index
Worksheet worksheet = workbook.Worksheets[i];
//Instantiating a "Products" DataTable object
DataTable dataTable = new DataTable("Products");
//Adding columns to the DataTable object
dataTable.Columns.Add("Product ID", typeof(Int32));
dataTable.Columns.Add("Product Name", typeof(string));
dataTable.Columns.Add("Units In Stock", typeof(Int32));
//Creating an empty row in the DataTable object
DataRow dr = dataTable.NewRow();
//Adding data to the row
dr[0] = 1;
dr[1] = "Aniseed Syrup";
dr[2] = 15;
//Adding filled row to the DataTable object
dataTable.Rows.Add(dr);
//Creating another empty row in the DataTable object
dr = dataTable.NewRow();
//Adding data to the row
dr[0] = 2;
dr[1] = "Boston Crab Meat";
dr[2] = 123;
//Adding filled row to the DataTable object
dataTable.Rows.Add(dr);
//Importing the contents of DataTable to the worksheet starting from "A1" cell,
//where true specifies that the column names of the DataTable would be added to
//the worksheet as a header row
worksheet.Cells.ImportDataTable(dataTable, true, "A1");
workbook.Save("Import From Data Table.xls");