通过剪贴板将DataGridView中的数据导出到Excel

　　将DataGridView中的数据导出到Excel中有许多方法，常见的方法是使用Office COM组件将DataGridView中的数据循环复制到Excel Cell对象中，然后再保存整个Excel Workbook。但是如果数据量太大，例如上万行数据或者有多个Excel Sheet需要同时导出，效率会比较低。可以尝试使用异步操作或多线程的方式来解决UI死锁的问题。参考http://www.cnblogs.com/jaxu/archive/2011/08/03/2126497.html

　　这里介绍一种直接通过Windows剪贴板将数据从DataGridView导出到Excel的方法。代码如下：

  1 using System;

  2 using System.Collections.Generic;

  3 using System.ComponentModel;

  4 using System.Data;

  5 using System.Drawing;

  6 using System.Linq;

  7 using System.Text;

  8 using System.Windows.Forms;

  9 using Excel = Microsoft.Office.Interop.Excel;

 10 using System.Reflection;

 11 using Microsoft.Office.Interop.Excel;

 12 

 13 namespace WindowsFormsApplication1

 14 {

 15     public partial class Form1 : Form

 16     {

 17         public Form1()

 18         {

 19             InitializeComponent();

 20             this.saveFileDialog1.Filter = "Excel Workbook|*.xlsx|Excel Macro-Enabled Workbook|*.xlsm|Excel 97-2003 Workbook|*.xls";

 21             this.saveFileDialog1.FileName = "demo.xlsx";

 22 

 23             LoadData();

 24         }

 25 

 26         private void LoadData()

 27         {

 28             BindingList<Car> cars = new BindingList<Car>();

 29 

 30             cars.Add(new Car("Ford", "Mustang", 1967));

 31             cars.Add(new Car("Shelby AC", "Cobra", 1965));

 32             cars.Add(new Car("Chevrolet", "Corvette Sting Ray", 1965));

 33 

 34             this.dataGridView1.DataSource = cars;

 35         }

 36 

 37         private void toolStripButton1_Click(object sender, EventArgs e)

 38         {

 39             string filePath = string.Empty;

 40             if (this.saveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)

 41             {

 42                 filePath = this.saveFileDialog1.FileName;

 43             }

 44             else

 45             {

 46                 return;

 47             }

 48 

 49             this.dataGridView1.SelectAll();

 50             Clipboard.SetDataObject(this.dataGridView1.GetClipboardContent());

 51 

 52             Excel.Application objExcel = null;

 53             Excel.Workbook objWorkbook = null;

 54             Excel.Worksheet objsheet = null;

 55             try

 56             {

 57                 objExcel = new Microsoft.Office.Interop.Excel.Application();

 58                 objWorkbook = objExcel.Workbooks.Add(Missing.Value);

 59                 objsheet = (Excel.Worksheet)objWorkbook.ActiveSheet;

 60                 objExcel.Visible = false;

 61 

 62                 objExcel.get_Range("A1", System.Type.Missing).PasteSpecial(XlPasteType.xlPasteAll, XlPasteSpecialOperation.xlPasteSpecialOperationNone, Type.Missing, Type.Missing);

 63                 objsheet.Name = "Demo";  

 64                 //Set table properties  

 65                 objExcel.Cells.EntireColumn.AutoFit();//auto column width  

 66                 objExcel.Cells.VerticalAlignment = Microsoft.Office.Interop.Excel.Constants.xlCenter;

 67                 objExcel.Cells.HorizontalAlignment = Microsoft.Office.Interop.Excel.Constants.xlLeft;

 68                 objExcel.ErrorCheckingOptions.BackgroundChecking = false;  

 69 

 70                 //save file

 71                 objWorkbook.SaveAs(filePath, Missing.Value, Missing.Value, Missing.Value, Missing.Value,

 72                         Missing.Value, Excel.XlSaveAsAccessMode.xlShared, Missing.Value, Missing.Value, Missing.Value,

 73                         Missing.Value, Missing.Value);

 74             }

 75             catch (Exception error)

 76             {

 77                 MessageBox.Show(error.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);

 78                 return;

 79             }

 80             finally

 81             {

 82                 //Dispose the Excel related objects 

 83                 if (objWorkbook != null)

 84                 {

 85                     objWorkbook.Close(Missing.Value, Missing.Value, Missing.Value);

 86                 }

 87                 if (objExcel.Workbooks != null)

 88                 {

 89                     objExcel.Workbooks.Close();

 90                 }

 91                 if (objExcel != null)

 92                 {

 93                     objExcel.Quit();

 94                 }

 95 

 96                 objsheet = null;

 97                 objWorkbook = null;

 98                 objExcel = null;

 99                 GC.Collect(); // force final cleanup.

100             }

101         }

102     }

103 

104     public class Car

105     {

106         private string _make;

107         private string _model;

108         private int _year;

109 

110         public Car(string make, string model, int year)

111         {

112             _make = make;

113             _model = model;

114             _year = year;

115         }

116 

117         public string Make

118         {

119             get { return _make; }

120             set { _make = value; }

121         }

122 

123         public string Model

124         {

125             get { return _model; }

126             set { _model = value; }

127         }

128 

129         public int Year

130         {

131             get { return _year; }

132             set { _year = value; }

133         }

134     }

135 }

　　导出数据到Excel的操作在事件toolStripButton1_Click中，代码的第49行和50行是将DataGridView当前选中的行复制到系统剪贴板中，62行将剪贴板中的内容粘贴到Excel默认Sheet的A1单元格中。Excel会自动格式化将粘贴的内容，如下图。

　　使用剪贴板导出数据过程比较简单，省去了对Excel对象的遍历和操作，缺点是无法对导出的数据进行格式和样式的设置。如果需要对导出的数据进行样式设置，可以尝试使用OpenXML的方式来修改Excel文件的样式，参考这篇文章http://www.cnblogs.com/jaxu/archive/2012/05/11/2495316.html。修改样式的操作可以在文件流中完成。

代码下载：WindowsFormsApplication1.zip