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C# 導(dǎo)出Excel的示例

轉(zhuǎn)帖|其它|編輯：郝浩|2011-08-15 14:56:17.000|閱讀 1582 次

概述：excel導(dǎo)出在C#代碼中應(yīng)用己經(jīng)很廣泛了，我這里就做些總結(jié)，供自己和讀者學(xué)習(xí)用。

　　excel導(dǎo)出在C#代碼中應(yīng)用己經(jīng)很廣泛了，我這里就做些總結(jié)，供自己和讀者學(xué)習(xí)用。

　　Excel知識點。

一、添加引用和命名空間

　　添加Microsoft.Office.Interop.Excel引用，它的默認(rèn)路徑是C:\Program Files\Microsoft Visual Studio 9.0\Visual Studio Tools for Office\PIA\Office12\Microsoft.Office.Interop.Excel.dll

　　代碼中添加引用using Microsoft.Office.Interop.Excel;

二、Excel類的簡單介紹

　　此命名空間下關(guān)于Excel類的結(jié)構(gòu)分別為：

　　ApplicationClass - 就是我們的excel應(yīng)用程序。

　　Workbook - 就是我們平常見的一個個excel文件，經(jīng)常是使用Workbooks類對其進(jìn)行操作。

　　Worksheet - 就是excel文件中的一個個sheet頁。

　　Worksheet.Cells[row, column] - 就是某行某列的單元格，注意這里的下標(biāo)row和column都是從1開始的，跟我平常用的數(shù)組或集合的下標(biāo)有所不同。

　　知道了上述基本知識后，利用此類來操作excel就清晰了很多。

三、Excel的操作

　　任何操作Excel的動作首先肯定是用excel應(yīng)用程序，首先要new一個ApplicationClass 實例，并在最后將此實例釋放。

1	ApplicationClass xlsApp = new ApplicationClass(); // 1. 創(chuàng)建Excel應(yīng)用程序?qū)ο蟮囊粋€實例，相當(dāng)于我們從開始菜單打開Excel應(yīng)用程序。

2	if (xlsApp == null)

{

4	//對此實例進(jìn)行驗證，如果為null則表示運行此代碼的機器可能未安裝Excel

}

　　 1. 打開現(xiàn)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; //第一個sheet頁

3	mySheet.Name = "testsheet"; //這里修改sheet名稱

2.復(fù)制sheet頁

1	mySheet.Copy(Type.Missing, workbook.Sheets[1]); //復(fù)制mySheet成一個新的sheet頁，復(fù)制完后的名稱是mySheet頁名稱后加一個(2)，這里就是testsheet(2)，復(fù)制完后，Worksheet的數(shù)量增加一個

注意這里Copy方法的兩個參數(shù)，指是的復(fù)制出來新的sheet頁是在指定sheet頁的前面還是后面，上面的例子就是指復(fù)制的sheet頁在第一個sheet頁的后面。

3.刪除sheet頁

1	xlsApp.DisplayAlerts = false; //如果想刪除某個sheet頁，首先要將此項設(shè)為fasle。

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

4.選中sheet頁

1	(xlsApp.ActiveWorkbook.Sheets[1] as Worksheet).Select(Type.Missing); //選中某個sheet頁

5.另存excel文件

1	workbook.Saved = true;

2	workbook.SaveCopyAs(filepath);

6.釋放excel資源

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

2	workbook = null;

3	xlsApp.Quit();

4	xlsApp = null;

　　一般的我們傳入一個DataTable生成Excel代碼

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中插入圖片，我們需要把代碼加入一行即可，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;

}

　　我們調(diào)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);

}

　　運行結(jié)果如下所示:

　　其中如下代碼的作用是

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的指定位置加入圖片

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，和里面的內(nèi)容.

　　我們可以這樣來設(shè)計一個ExcelBase的基類:

　　先創(chuàng)建一個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; }

}

　　接下來創(chuàng)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();

}

　　調(diào)用的代碼如下:

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);

}

　　結(jié)果如下圖所示：

標(biāo)簽：

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