将datatable导出为excel的三种方式（转）

一、使用Microsoft.Office.Interop.Excel.DLL

　　需要安装Office

　　代码如下： 

 

2 publicstaticboolExportExcel(System.Data.DataTable dt, stringpath)
3 {
4 boolsucceed =false;
5 if(dt !=null)
6 {
7 Microsoft.Office.Interop.Excel.Application xlApp =null;
8 try
9 {
10 xlApp =newMicrosoft.Office.Interop.Excel.ApplicationClass();
11 }
12 catch(Exception ex)
13 {
14 throwex;
15 }
16 
17 if(xlApp !=null)
18 {
19 try
20 {
21 Microsoft.Office.Interop.Excel.Workbook xlBook =xlApp.Workbooks.Add(true);
22 objectoMissing =System.Reflection.Missing.Value;
23 Microsoft.Office.Interop.Excel.Worksheet xlSheet =null;
24 
25 xlSheet =(Worksheet)xlBook.Worksheets[1];
26 xlSheet.Name =dt.TableName;
27 
28 introwIndex =1;
29 intcolIndex =1;
30 intcolCount =dt.Columns.Count;
31 introwCount =dt.Rows.Count;
32 
33 //列名的处理
34 for(inti =0; i <colCount; i++)
35 {
36 xlSheet.Cells[rowIndex, colIndex] =dt.Columns[i].ColumnName;
37 colIndex++;
38 }
39 //列名加粗显示
40 xlSheet.get_Range(xlSheet.Cells[rowIndex, 1], xlSheet.Cells[rowIndex, colCount]).Font.Bold =true;
41 xlSheet.get_Range(xlSheet.Cells[rowIndex, 1], xlSheet.Cells[rowCount +1, colCount]).Font.Name ="Arial";
42 xlSheet.get_Range(xlSheet.Cells[rowIndex, 1], xlSheet.Cells[rowCount +1, colCount]).Font.Size ="10";
43 rowIndex++;
44 
45 for(inti =0; i <rowCount; i++)
46 {
47 colIndex =1;
48 for(intj =0; j <colCount; j++)
49 {
50 xlSheet.Cells[rowIndex, colIndex] =dt.Rows[i][j].ToString();
51 colIndex++;
52 }
53 rowIndex++;
54 }
55 xlSheet.Cells.EntireColumn.AutoFit();
56 
57 xlApp.DisplayAlerts =false;
58 path =Path.GetFullPath(path);
59 xlBook.SaveCopyAs(path);
60 xlBook.Close(false, null, null);
61 xlApp.Workbooks.Close();
62 Marshal.ReleaseComObject(xlSheet);
63 Marshal.ReleaseComObject(xlBook);
64 xlBook =null;
65 succeed =true;
66 }
67 catch(Exception ex)
68 {
69 succeed =false;
70 }
71 finally
72 {
73 xlApp.Quit();
74 Marshal.ReleaseComObject(xlApp);
75 intgeneration =System.GC.GetGeneration(xlApp);
76 xlApp =null;
77 System.GC.Collect(generation);
78 }
79 }
80 }
81 returnsucceed;
82 }

二、使用Aspose.Cells.dll

Aspose.Cells 是 Aspose公司推出的导出Excel的控件，不依赖Office，商业软件，网上有破解 （下载见附件）。

代码如下： 

1 public static bool ExportExcelWithAspose(System.Data.DataTable dt, string path)
2 {
3 boolsucceed =false;
4 if(dt !=null)
5 {
6 try
7 {
8 Aspose.Cells.License li =newAspose.Cells.License();
9 stringlic =Resources.License;
10 Stream s =newMemoryStream(ASCIIEncoding.Default.GetBytes(lic));
11 li.SetLicense(s);
12 
13 Aspose.Cells.Workbook workbook =newAspose.Cells.Workbook();
14 Aspose.Cells.Worksheet cellSheet =workbook.Worksheets[0];
15 
16 cellSheet.Name =dt.TableName;
17 
18 introwIndex =0;
19 intcolIndex =0;
20 intcolCount =dt.Columns.Count;
21 introwCount =dt.Rows.Count;
22 
23 //列名的处理
24 for(inti =0; i <colCount; i++)
25 {
26 cellSheet.Cells[rowIndex, colIndex].PutValue(dt.Columns[i].ColumnName);
27 cellSheet.Cells[rowIndex, colIndex].Style.Font.IsBold =true;
28 cellSheet.Cells[rowIndex, colIndex].Style.Font.Name ="宋体";
29 colIndex++;
30 }
31 
32 Aspose.Cells.Style style =workbook.Styles[workbook.Styles.Add()];
33 style.Font.Name ="Arial";
34 style.Font.Size =10;
35 Aspose.Cells.StyleFlag styleFlag =newAspose.Cells.StyleFlag();
36 cellSheet.Cells.ApplyStyle(style, styleFlag);
37 
38 rowIndex++;
39 
40 for(inti =0; i <rowCount; i++)
41 {
42 colIndex =0;
43 for(intj =0; j <colCount; j++)
44 {
45 cellSheet.Cells[rowIndex, colIndex].PutValue(dt.Rows[i][j].ToString());
46 colIndex++;
47 }
48 rowIndex++;
49 }
50 cellSheet.AutoFitColumns();
51 
52 path =Path.GetFullPath(path);
53 workbook.Save(path);
54 succeed =true;
55 }
56 catch(Exception ex)
57 {
58 succeed =false;
59 }
60 }
61 
62 returnsucceed;
63 }

 

三、 使用XML导出Excel

不依赖Office和其他第三方控件，需要事先准备一个模版。新建一个Excel文档，另存为XML 表格格式，将另存为的文件的扩展名改为xls，作为导出的模版。导出Excel时，用XMLDocment先打开模版，然后对模版进行增加修改操作，操作方法就是一般的XML操作方法。因为导出的文件扩展名是xls，与XML的文件格式不符，所以用Excel打开时会弹出提示。

代码如下：

1 public static bool ExportExcelWithXML(System.Data.DataTable dt, string path)
2 {
3 boolsucceed =false;
4 if(dt ==null)
5 {
6 //导出为XML格式的Excel文件，需要事先准备好XML格式的Excel文件作为模版
7 try
8 {
9 XmlDocument doc =newXmlDocument();
10 doc.Load(System.Windows.Forms.Application.StartupPath +@"\XLS\ExportXML.xls");
11 XmlNode root =doc.DocumentElement;
12 XmlNodeList xnlist =root.ChildNodes;
13 XmlElement sheet =null;
14 XmlElement documentPro =null;
15 XmlElement styles =null;
16 foreach(XmlNode xn inxnlist)
17 {
18 XmlElement xe =(XmlElement)xn;
19 if(xe.Name =="DocumentProperties")
20 {
21 documentPro =xe;
22 }
23 elseif(xe.Name =="Worksheet")
24 {
25 sheet =xe;
26 }
27 elseif(xe.Name =="Styles")
28 {
29 styles =xe;
30 }
31 }
32 
33 if(documentPro ==null||sheet ==null||styles ==null)
34 {
35 returnfalse;
36 }
37 
38 //写入Sheet名
39 sheet.SetAttribute("Name", ssNameSpace, dt.TableName);
40 
41 //添加Style
42 XmlElement styleColumnName =doc.CreateElement("Style", ssNameSpace);
43 styleColumnName.SetAttribute("ID", ssNameSpace, "s16");
44 XmlElement fontColumnName =doc.CreateElement("Font", ssNameSpace);
45 fontColumnName.SetAttribute("FontName", ssNameSpace, "Arial");
46 fontColumnName.SetAttribute("Family", xNameSpace, "Swiss");
47 fontColumnName.SetAttribute("Color", ssNameSpace, "#000000");
48 fontColumnName.SetAttribute("Bold", ssNameSpace, "1");
49 styleColumnName.AppendChild(fontColumnName);
50 styles.AppendChild(styleColumnName);
51 
52 XmlElement styleRow =doc.CreateElement("Style", ssNameSpace);
53 styleRow.SetAttribute("ID", ssNameSpace, "s17");
54 XmlElement fontRow =doc.CreateElement("Font", ssNameSpace);
55 fontRow.SetAttribute("FontName", ssNameSpace, "Arial");
56 fontRow.SetAttribute("Family", xNameSpace, "Swiss");
57 fontRow.SetAttribute("Color", ssNameSpace, "#000000");
58 styleRow.AppendChild(fontRow);
59 styles.AppendChild(styleRow);
60 
61 //写入表格内容
62 XmlNode table =sheet.FirstChild;
63 
64 //写入行列个数
65 ((XmlElement)table).SetAttribute("ExpandedColumnCount", ssNameSpace, dt.Columns.Count.ToString());
66 ((XmlElement)table).SetAttribute("ExpandedRowCount", ssNameSpace, (dt.Rows.Count +2).ToString());
67 
68 //添加列宽
69 for(inti =0; i <dt.Columns.Count; i++)
70 {
71 XmlElement column =doc.CreateElement("Column", ssNameSpace);
72 column.SetAttribute("Width", ssNameSpace, "100");
73 column.SetAttribute("AutoFitWidth", ssNameSpace, "1");
74 table.AppendChild(column);
75 }
76 
77 //添加列名
78 XmlElement columnName =doc.CreateElement("Row", ssNameSpace);
79 for(inti =0; i <dt.Columns.Count; i++)
80 {
81 XmlElement columnCell =doc.CreateElement("Cell", ssNameSpace);
82 columnCell.SetAttribute("StyleID", ssNameSpace, "s16");
83 
84 XmlElement data =doc.CreateElement("ss:Data", ssNameSpace);
85 data.SetAttribute("Type", ssNameSpace, "String");
86 data.InnerText =dt.Columns[i].ToString();
87 
88 columnCell.AppendChild(data);
89 columnName.AppendChild(columnCell);
90 }
91 table.AppendChild(columnName);
92 
93 //添加行
94 for(inti =0; i <dt.Rows.Count; i++)
95 {
96 XmlElement row =doc.CreateElement("Row", ssNameSpace);
97 for(intj =0; j <dt.Columns.Count; j++)
98 {
99 XmlElement cell =doc.CreateElement("Cell", ssNameSpace);
100 cell.SetAttribute("StyleID", ssNameSpace, "s17");
101 
102 XmlElement data =doc.CreateElement("Data", ssNameSpace);
103 data.SetAttribute("Type", ssNameSpace, "String");
104 data.InnerText =dt.Rows[i][j].ToString();
105 
106 cell.AppendChild(data);
107 row.AppendChild(cell);
108 }
109 table.AppendChild(row);
110 }
111 
112 DateTime now =DateTime.Now;
113 stringtimeString =string.Format("{0}T{1}Z", now.ToShortDateString(), now.ToLongTimeString());
114 XmlNodeList docProNodeList =documentPro.ChildNodes;
115 foreach(XmlNode xn indocProNodeList)
116 {
117 if(xn.Name =="Author"||xn.Name =="LastAuthor")
118 {
119 //写入作者和修改者
120 xn.InnerText =Environment.UserName;
121 }
122 elseif(xn.Name =="Created"||xn.Name =="LastSaved")
123 {
124 //写入创建时间和修改时间
125 xn.InnerText =timeString;
126 }
127 elseif(xn.Name =="Company")
128 {
129 //写入公司名
130 xn.InnerText =System.Windows.Forms.Application.CompanyName;
131 }
132 }
133 
134 doc.Save(path);
135 succeed =true;
136 }
137 catch(Exception e)
138 {
139 succeed =false;
140 }
141 }
142 
143 returnsucceed;
144 }