使用VSIUAL C#.NET操作Excel -把DataTable中的数据写入Excel

自动化允许由编程语言(如C#.NET等)创建的应用程序操作其它的应用程序。使用Excel自动化可以创建工作薄(Workbook)并为其添加数据或者创建一个图表。下面的示例演示了把DataSet中的数据导出到Excel中。

1.         新建C#.NET工程ExcelApp

2.         引用Com组件Microsoft.Excel 11.0 Object Library

3.         新建类ExcelProgram

 

using System;

using System.Data;

using System.Data.SqlClient;

using System.Reflection;

 

using Excel = Microsoft.Office.Interop.Excel;

 

namespace Avisnet

{

    class ExcelProgram

    {

        static void Main (string[] args)

        {

            ExcelProgram p = new ExcelProgram();

            DataTable table = p.LoadDataTable();

            p.ExportDataTable(table);

        }

 

        public DataTable LoadDataTable()

        {

            string connString = "server=wangjs;User ID=sa;Password=sa;database=pubs;Connection Reset=FALSE";

 

            using(SqlConnection conn = new SqlConnection(connString))

            {

                DataSet ds = new DataSet();

                SqlDataAdapter adapter = new SqlDataAdapter("SELECT * FROM authors", conn);

                adapter.Fill(ds);

                return ds.Tables[0];

            }

        }

 

        public void ExportDataTable(DataTable table)

        {

            // Starts excel and gets an excel application object.

            Excel.Application excel = new Excel.Application();

 

            // Adds a new workbook to the excel application.

            Excel.Workbook book = excel.Workbooks.Add(Missing.Value);

            Excel.Worksheet sheet = (Excel.Worksheet)book.ActiveSheet;

 

            // Adds table headers

            for(int col = 0; col < table.Columns.Count; col++)

            {

                sheet.Cells[1, col + 1] = table.Columns[col].ColumnName;

            }

 

            for(int row = 0; row < table.Rows.Count; row++)

            {

                for(int col = 0; col < table.Columns.Count; col++)

                {

                    sheet.Cells[row + 2, col + 1] = table.Rows[row][col].ToString();

                }

            }

 

            // Saves and cloeses the workbook;

            book.Close(true, "C:\\fx.xls", Missing.Value);

 

            // Exit excel application.

            excel.Quit();

        }

    }

}

 

 

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