Visual Studio 2005 C# 读写Excel文件

做作业的时候查了一点儿资料，

用的vs2k5 读 excel 2007

发现用起来非常简单。。。现在编程语言没话说！

1

项目-添加引用-COM-Microsoft Excel 12.0 Object Library

&& -Microsoft Office 12.0 Object Library

2

using Microsoft.Office.Core;

using Microsoft.Office.Interop.Excel;

using System.IO;

using System.Reflection;

3

            string originalFile = System.Windows.Forms.Application.StartupPath + @".\a.xlsx";

            string outputFile;

            SaveFileDialog save = new SaveFileDialog();

            save.InitialDirectory = "D:\\";

            save.Filter = "Excel files (*.xlsx)|*.xlsx|All files (*.*)|*.*";

            save.FilterIndex = 1;

            save.RestoreDirectory = true;

            if (save.ShowDialog() == DialogResult.OK)

            {

                try

                {

                    outputFile = save.FileName;

                    System.IO.File.Copy(originalFile, outputFile, true);

                    ExcelRS = new Microsoft.Office.Interop.Excel.ApplicationClass();

                    //打开目标文件outputFile

                    RSbook = ExcelRS.Workbooks.Open(outputFile, missing, missing, missing, missing, missing,

                        missing, missing, missing, missing, missing, missing, missing, missing, missing);

                    //设置第一个工作溥

                    RSsheet = (Microsoft.Office.Interop.Excel.Worksheet)RSbook.Sheets.get_Item(1);

                    //激活当前工作溥

                    RSsheet.Activate();

                    RSsheet.Cells[1, 1] = dataGridView1.SelectedRows.Count;

                    for (int i = 0; i < dataGridView1.SelectedRows.Count; ++i)

                    {

                        for (int j = 0; j < 11; ++j)

                        {

                            RSsheet.Cells[i + 2, j + 1] = dataGridView1.Rows[dataGridView1.SelectedRows[i].Index].Cells[j].Value.ToString().Trim();

                            // RSsheet.Cells

                            RSsheet.get_Range(RSsheet.Cells[i + 2, j + 1], RSsheet.Cells[i + 2, j + 1]).EntireColumn.ColumnWidth = 40;

                            //RSsheet.get_Range(RSsheet.Cells[i + 2, j + 1], missing).auto

                        }

                    }

                    RSbook.Save();

                    ExcelRS.DisplayAlerts = true;

                    ExcelRS.Visible = true;

                }

                catch (System.Exception ex)

                {

                    MessageBox.Show(ex.Message);

                }

                finally

                {

                    ExcelRS.Quit();

                }

            }

4

            OpenFileDialog open = new OpenFileDialog();

            open.InitialDirectory = @"D:\";

            open.Filter = "Excel files (*.xlsx)|*.xlsx|All files (*.*)|*.*";

            open.FilterIndex = 1;

            open.RestoreDirectory = true;

            if (open.ShowDialog() == DialogResult.OK)

            {

                try

                {

                    ExcelRS = new Microsoft.Office.Interop.Excel.ApplicationClass();

                    RSbook = ExcelRS.Workbooks.Open(open.FileName, missing, missing, missing, missing, missing,

                        missing, missing, missing, missing, missing, missing, missing, missing, missing);

                    RSsheet = (Microsoft.Office.Interop.Excel.Worksheet)RSbook.Sheets.get_Item(1);

                    RSsheet.Activate();

                    Microsoft.Office.Interop.Excel.Range range = RSsheet.get_Range("A" + i, Type.Missing);

                    counts = int.Parse(range.Text.ToString().Trim());

                }

                catch (System.Exception ex)

                {

                    MessageBox.Show(ex.Message);

                }

                finally

                {

                    ExcelRS.Quit();

                    conn.Close();

                }

            }

 



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