C# 导出Excel的示例-控件新闻-慧都网

C# 导出Excel的示例

转帖|其它|编辑：郝浩|2011-08-15 14:56:17.000|阅读 1585 次

概述：excel导出在C#代码中应用己经很广泛了，我这里就做些总结，供自己和读者学习用。

　　excel导出在C#代码中应用己经很广泛了，我这里就做些总结，供自己和读者学习用。

　　Excel知识点。

一、添加引用和命名空间

　　添加Microsoft.Office.Interop.Excel引用，它的默认路径是C:\Program Files\Microsoft Visual Studio 9.0\Visual Studio Tools for Office\PIA\Office12\Microsoft.Office.Interop.Excel.dll

　　代码中添加引用using Microsoft.Office.Interop.Excel;

二、Excel类的简单介绍

　　此命名空间下关于Excel类的结构分别为：

　　ApplicationClass - 就是我们的excel应用程序。

　　Workbook - 就是我们平常见的一个个excel文件，经常是使用Workbooks类对其进行操作。

　　Worksheet - 就是excel文件中的一个个sheet页。

　　Worksheet.Cells[row, column] - 就是某行某列的单元格，注意这里的下标row和column都是从1开始的，跟我平常用的数组或集合的下标有所不同。

　　知道了上述基本知识后，利用此类来操作excel就清晰了很多。

三、Excel的操作

　　任何操作Excel的动作首先肯定是用excel应用程序，首先要new一个ApplicationClass 实例，并在最后将此实例释放。

1	ApplicationClass xlsApp = new ApplicationClass(); // 1. 创建Excel应用程序对象的一个实例，相当于我们从开始菜单打开Excel应用程序。

2	if (xlsApp == null)

{

4	//对此实例进行验证，如果为null则表示运行此代码的机器可能未安装Excel

}

　　 1. 打开现有的Excel文件

1	Workbook workbook = xlsApp.Workbooks.Open(excelFilePath, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

2	Worksheet mySheet = workbook.Sheets[1] as Worksheet; //第一个sheet页

3	mySheet.Name = "testsheet"; //这里修改sheet名称

2.复制sheet页

1	mySheet.Copy(Type.Missing, workbook.Sheets[1]); //复制mySheet成一个新的sheet页，复制完后的名称是mySheet页名称后加一个(2)，这里就是testsheet(2)，复制完后，Worksheet的数量增加一个

注意这里Copy方法的两个参数，指是的复制出来新的sheet页是在指定sheet页的前面还是后面，上面的例子就是指复制的sheet页在第一个sheet页的后面。

3.删除sheet页

1	xlsApp.DisplayAlerts = false; //如果想删除某个sheet页，首先要将此项设为fasle。

2	(xlsApp.ActiveWorkbook.Sheets[1] as Worksheet).Delete();

4.选中sheet页

1	(xlsApp.ActiveWorkbook.Sheets[1] as Worksheet).Select(Type.Missing); //选中某个sheet页

5.另存excel文件

1	workbook.Saved = true;

2	workbook.SaveCopyAs(filepath);

6.释放excel资源

1	workbook.Close(true, Type.Missing, Type.Missing);

2	workbook = null;

3	xlsApp.Quit();

4	xlsApp = null;

　　一般的我们传入一个DataTable生成Excel代码

01	/// <summary>

///

03	/// </summary>

04	/// <param name="dt"></param>

05	protected void ExportExcel(DataTable dt)

{

07	if (dt == null\|\|dt.Rows.Count==0) return;

08	Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();

10	if (xlApp == null)

{

return;

}

14	System.Globalization.CultureInfo CurrentCI = System.Threading.Thread.CurrentThread.CurrentCulture;

15	System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");

16	Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;

17	Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);

18	Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];

19	Microsoft.Office.Interop.Excel.Range range;

20	long totalCount = dt.Rows.Count;

21	long rowRead = 0;

22	float percent = 0;

23	for (int i = 0; i < dt.Columns.Count; i++)

{

25	worksheet.Cells[1, i + 1] = dt.Columns[i].ColumnName;

26	range = (Microsoft.Office.Interop.Excel.Range)worksheet.Cells[1, i + 1];

27	range.Interior.ColorIndex = 15;

28	range.Font.Bold = true;

}

30	for (int r = 0; r < dt.Rows.Count; r++)

{

32	for (int i = 0; i < dt.Columns.Count; i++)

{

34	worksheet.Cells[r + 2, i + 1] = dt.Rows[r][i].ToString();

}

36	rowRead++;

37	percent = ((float)(100 * rowRead)) / totalCount;

}

39	xlApp.Visible = true;

}

　　如果要在excel中插入图片，我们需要把代码加入一行即可，如下所示

01	protected void ExportExcel(DataTable dt)

{

03	if (dt == null \|\| dt.Rows.Count == 0) return;

04	Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();

06	if (xlApp == null)

{

return;

}

10	System.Globalization.CultureInfo CurrentCI = System.Threading.Thread.CurrentThread.CurrentCulture;

11	System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");

12	Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;

13	Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);

14	Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];

15	Microsoft.Office.Interop.Excel.Range range;

16	long totalCount = dt.Rows.Count;

17	long rowRead = 0;

18	float percent = 0;

19	for (int i = 0; i < dt.Columns.Count; i++)

{

21	worksheet.Cells[1, i + 1] = dt.Columns[i].ColumnName;

22	range = (Microsoft.Office.Interop.Excel.Range)worksheet.Cells[1, i + 1];

23	range.Interior.ColorIndex = 15;

}

25	for (int r = 0; r < dt.Rows.Count; r++)

{

27	for (int i = 0; i < dt.Columns.Count; i++)

{

try

{

31	worksheet.Cells[r + 2, i + 1] = dt.Rows[r][i].ToString();

}

catch

{

35	worksheet.Cells[r + 2, i + 1] = dt.Rows[r][i].ToString().Replace("=", "");

}

38	rowRead++;

39	percent = ((float)(100 * rowRead)) / totalCount;

}

42	worksheet.Shapes.AddPicture("C:\\Users\\spring\\Desktop\\1.gif", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 100, 200, 200, 300);

43	worksheet.Shapes.AddTextEffect(Microsoft.Office.Core.MsoPresetTextEffect.msoTextEffect1, "123456", "Red", 15, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoTrue, 150, 200);

44	xlApp.Visible = true;

}

　　我们调用如下:

01	public void GenerateExcel()

{

03	DataTable dt = new DataTable();

04	dt.Columns.Add("Name", typeof(string));

05	dt.Columns.Add("Age", typeof(string));

06	DataRow dr = dt.NewRow();

07	dr["Name"] = "spring";

08	dr["Age"] = "20";

09	dt.Rows.Add(dr);

10	dt.AcceptChanges();

11	ExportExcel(dt);

}

　　运行结果如下所示:

　　其中如下代码的作用是

1	worksheet.Shapes.AddPicture("C:\\Users\\spring\\Desktop\\1.gif", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 100, 200, 200, 300);

　　在Excel的指定位置加入图片

1	worksheet.Shapes.AddTextEffect(Microsoft.Office.Core.MsoPresetTextEffect.msoTextEffect1, "123456", "Red", 15, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoTrue, 150, 200);

　　在Excel的指定位置加入文本框，和里面的内容.

　　我们可以这样来设计一个ExcelBase的基类:

　　先创建一个ExcelBE.cs：

01	public class ExcelBE

{

03	private int _row = 0;

04	private int _col = 0;

05	private string _text = string.Empty;

06	private string _startCell = string.Empty;

07	private string _endCell = string.Empty;

08	private string _interiorColor = string.Empty;

09	private bool _isMerge = false;

10	private int _size = 0;

11	private string _fontColor = string.Empty;

12	private string _format = string.Empty;

14	public ExcelBE(int row, int col, string text, string startCell, string endCell, string interiorColor, bool isMerge, int size, string fontColor, string format)

{

16	_row = row;

17	_col = col;

18	_text = text;

19	_startCell = startCell;

20	_endCell = endCell;

21	_interiorColor = interiorColor;

22	_isMerge = isMerge;

23	_size = size;

24	_fontColor = fontColor;

25	_format = format;

}

28	public ExcelBE()

{ }

31	public int Row

{

33	get { return _row; }

34	set { _row = value; }

}

37	public int Col

{

39	get { return _col; }

40	set { _col = value; }

}

43	public string Text

{

45	get { return _text; }

46	set { _text = value; }

}

49	public string StartCell

{

51	get { return _startCell; }

52	set { _startCell = value; }

}

55	public string EndCell

{

57	get { return _endCell; }

58	set { _endCell = value; }

}

61	public string InteriorColor

{

63	get { return _interiorColor; }

64	set { _interiorColor = value; }

}

67	public bool IsMerge

{

69	get { return _isMerge; }

70	set { _isMerge = value; }

}

73	public int Size

{

75	get { return _size; }

76	set { _size = value; }

}

79	public string FontColor

{

81	get { return _fontColor; }

82	set { _fontColor = value; }

}

85	public string Formart

{

87	get { return _format; }

88	set { _format = value; }

}

　　接下来创建ExcelBase.cs:

01	public class ExcelBase

{

03	private Microsoft.Office.Interop.Excel.Application app = null;

04	private Microsoft.Office.Interop.Excel.Workbook workbook = null;

05	private Microsoft.Office.Interop.Excel.Worksheet worksheet = null;

06	private Microsoft.Office.Interop.Excel.Range workSheet_range = null;

08	public ExcelBase()

{

10	createDoc();

}

13	public void createDoc()

{

try

{

17	app = new Microsoft.Office.Interop.Excel.Application();

18	app.Visible = true;

19	workbook = app.Workbooks.Add(1);

20	worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Sheets[1];

}

22	catch (Exception e)

{

24	Console.Write("Error");

}

finally

{

}

31	public void InsertData(ExcelBE be)

{

33	worksheet.Cells[be.Row, be.Col] = be.Text;

34	workSheet_range = worksheet.get_Range(be.StartCell, be.EndCell);

35	workSheet_range.MergeCells = be.IsMerge;

36	workSheet_range.Interior.Color = GetColorValue(be.InteriorColor);

37	workSheet_range.Borders.Color = System.Drawing.Color.Black.ToArgb();

38	workSheet_range.ColumnWidth = be.Size;

39	workSheet_range.Font.Color = string.IsNullOrEmpty(be.FontColor) ? System.Drawing.Color.White.ToArgb() : System.Drawing.Color.Black.ToArgb();

40	workSheet_range.NumberFormat = be.Formart;

}

43	private int GetColorValue(string interiorColor)

{

45	switch (interiorColor)

{

47	case "YELLOW":

48	return System.Drawing.Color.Yellow.ToArgb();

49	case "GRAY":

50	return System.Drawing.Color.Gray.ToArgb();

51	case "GAINSBORO":

52	return System.Drawing.Color.Gainsboro.ToArgb();

53	case "Turquoise":

54	return System.Drawing.Color.Turquoise.ToArgb();

55	case "PeachPuff":

56	return System.Drawing.Color.PeachPuff.ToArgb();

default:

59	return System.Drawing.Color.White.ToArgb();

}

　　调用的代码如下:

01	private void btnRun_Click(object sender, EventArgs e)

{

03	ExcelBase excel = new ExcelBase();

04	//creates the main header

05	ExcelBE be = null;

06	be = new ExcelBE (5, 2, "Total of Products", "B5", "D5", "YELLOW", true, 10, "n",null);

07	excel.InsertData(be);

08	//creates subheaders

09	be = new ExcelBE (6, 2, "Sold Product", "B6", "B6", "GRAY", true, 10, "",null);

10	excel.InsertData(be);

11	be=new ExcelBE(6, 3, "", "C6", "C6", "GRAY", true, 10, "",null);

12	excel.InsertData(be);

13	be=new ExcelBE (6, 4, "Initial Total", "D6", "D6", "GRAY", true, 10, "",null);

14	excel.InsertData(be);

15	//add Data to cells

16	be=new ExcelBE (7, 2, "114287", "B7", "B7",null,false,10,"", "#,##0");

17	excel.InsertData(be);

18	be=new ExcelBE (7, 3, "", "C7", "C7", null,false,10,"",null);

19	excel.InsertData(be);

20	be = new ExcelBE(7, 4, "129121", "D7", "D7", null, false, 10, "", "#,##0");

21	excel.InsertData(be);

22	//add percentage row

23	be = new ExcelBE(8, 2, "", "B8", "B8", null, false, 10, "", "");

24	excel.InsertData(be);

25	be = new ExcelBE(8, 3, "=B7/D7", "C8", "C8", null, false, 10, "", "0.0%");

26	excel.InsertData(be);

27	be = new ExcelBE(8, 4, "", "D8", "D8", null, false, 10, "", "");

28	excel.InsertData(be);

29	//add empty divider

30	be = new ExcelBE(9, 2, "", "B9", "D9", "GAINSBORO", true, 10, "",null);

31	excel.InsertData(be);

}

　　结果如下图所示：

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