WinForm导出文件，你懂的……

好久没有写文章了，下面把自己最近程序中用到的一个小小的导出文件的方法给在家分享一下，欢迎大家来排砖，谢谢~不说废话了，直接上代码：
  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Windows.Forms;
  6 using System.Threading;
  7 using Microsoft.Office.Interop.Word;
  8 using System.IO;
  9 using Microsoft.Office.Interop.Excel;
 10 using Sun.Winform.Util;
 11 
 12 namespace Sun.Winform.Files
 13 {
 14     /// <summary>
 15 /// 将内容导出为文件类。
 16 /// </summary>
 17 /// <remarks>
 18 /// 作者：SunYujing
 19 /// 日期：2011-12-18
 20 /// </remarks>
 21     public class ExportFile
 22     {
 23         /// <summary>
 24 /// 将字符串存储为word文档格式的文件的方法(多线程)。
 25 /// </summary>
 26 /// <param name="strText">要保存的字符串内容。</param>
 27         public static void SaveAsWord(string p_str)
 28         {
 29             Thread thread = new Thread(SaveAsWordFile);
 30             thread.SetApartmentState(ApartmentState.STA);
 31             thread.Start(p_str);
 32         }
 33         /// <summary>
 34 /// 将字符串存储为txt格式的文件的方法(多线程)。
 35 /// </summary>
 36 /// <param name="p_str"></param>
 37         public static void SaveAsTxt(string p_str)
 38         {
 39             Thread thread = new Thread(SaveAsTxtFile);
 40             thread.SetApartmentState(ApartmentState.STA);
 41             thread.Start(p_str);
 42         }
 43         /// <summary>
 44 /// 导出数据表数据到Excel(多线程)。
 45 /// </summary>
 46         public static void SaveAsExcel(System.Data.DataTable dataTable)
 47         {
 48             if (dataTable == null)
 49             {
 50                 MessageUtil.ShowError("请先指定要导出的数据表");
 51                 return;
 52             }
 53             Thread thread = new Thread(SaveAsExcelTableFile);
 54             thread.SetApartmentState(ApartmentState.STA);
 55             thread.Start(dataTable);
 56         }
 57         /// <summary>
 58 /// 导出数据集数据到Excel(多线程)。
 59 /// </summary>
 60         public static void SaveAsExcel(System.Data.DataSet dataSet)
 61         {
 62             if (dataSet == null)
 63             {
 64                 MessageUtil.ShowError("请先指定要导出的数据集");
 65                 return;
 66             }
 67             Thread thread = new Thread(SaveAsExcelSetFile);
 68             thread.SetApartmentState(ApartmentState.STA);
 69             thread.Start(dataSet);
 70         }
 71         /// <summary>
 72 /// 将字符串存储为word文档格式的文件。
 73 /// </summary>
 74 /// <param name="strtext">要保存的字符串内容。</param>
 75         private static void SaveAsWordFile(object strtext)
 76         {
 77             SaveFileDialog sfd = new SaveFileDialog();
 78             sfd.Title = "请选择文件存放路径";
 79             sfd.FileName = "导出数据";
 80             sfd.Filter = "Word文档(*.doc)|*.doc";
 81             if (sfd.ShowDialog() != DialogResult.OK)
 82             {
 83                 return;
 84             }
 85             string FileName = sfd.FileName.ToLower();
 86             if (!FileName.Contains(".doc"))
 87             {
 88                 FileName += ".doc";
 89             }
 90             if (FileName.Substring(FileName.LastIndexOf(Path.DirectorySeparatorChar)).Length <= 5)
 91             {
 92                 MessageUtil.ShowThreadMessage("文件保存失败，文件名不能为空！");
 93                 return;
 94             }
 95             try
 96             {
 97                 DateTime start = DateTime.Now;
 98                 MessageUtil.ShowThreadMessage("正在保存文件，请稍候...");
 99                 Microsoft.Office.Interop.Word.ApplicationClass word = new Microsoft.Office.Interop.Word.ApplicationClass();
100                 Microsoft.Office.Interop.Word._Document doc;
101                 object nothing = System.Reflection.Missing.Value;
102                 doc = word.Documents.Add(ref nothing, ref nothing, ref nothing, ref nothing);
103                 doc.Paragraphs.Last.Range.Text = strtext.ToString();
104                 object myfileName = FileName;
105                 //将WordDoc文档对象的内容保存为doc文档
106                 doc.SaveAs(ref myfileName, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing, ref nothing);
107                 //关闭WordDoc文档对象
108                 doc.Close(ref nothing, ref nothing, ref nothing);
109                 //关闭WordApp组件对象
110                 word.Quit(ref nothing, ref nothing, ref nothing);
111                 GC.Collect();
112                 DateTime end = DateTime.Now;
113                 TimeSpan ts = end - start;
114                 MessageUtil.ShowMessage("文件保存成功，用时" + ts.ToString());
115             }
116             catch (System.Exception ex)
117             {
118                 MessageUtil.ShowError(ex.Message);
119             }
120         }
121         /// <summary>
122 /// 将字符串存储为txt文档格式的文件。
123 /// </summary>
124 /// <param name="strtext">要保存的字符串内容。</param>
125         private static void SaveAsTxtFile(object strtext)
126         {
127             SaveFileDialog sfd = new SaveFileDialog();
128             sfd.Title = "请选择文件存放路径";
129             sfd.FileName = "导出数据";
130             sfd.Filter = "文本文档(*.txt)|*.txt";
131             if (sfd.ShowDialog() != DialogResult.OK)
132             {
133                 return;
134             }
135             string FileName = sfd.FileName.ToLower();
136             if (!FileName.Contains(".txt"))
137             {
138                 FileName += ".txt";
139             }
140             if (FileName.Substring(FileName.LastIndexOf(Path.DirectorySeparatorChar)).Length <= 5)
141             {
142                 MessageUtil.ShowThreadMessage("文件保存失败，文件名不能为空！");
143                 return;
144             }
145             try
146             {
147                 DateTime start = DateTime.Now;
148                 StreamWriter sw = new StreamWriter(FileName, false);
149                 sw.Write(strtext.ToString());
150                 sw.Flush();
151                 sw.Close();
152                 DateTime end = DateTime.Now;
153                 TimeSpan ts = end - start;
154                 MessageUtil.ShowMessage("文件保存成功，用时" + ts.ToString());
155             }
156             catch (Exception ex)
157             {
158                 MessageUtil.ShowError(ex.Message);
159             }
160         }
161         /// <summary>
162 /// 将数据存储为Excel文件。
163 /// </summary>
164 /// <param name="p_dt">要保存的数据表。</param>
165         private static void SaveAsExcelTableFile(object p_dt)
166         {
167             System.Data.DataTable dt = (System.Data.DataTable)p_dt;
168             if (dt.Rows.Count == 0)
169             {
170                 MessageUtil.ShowError("没有可保存的数据");
171                 return;
172             }
173             SaveFileDialog sfd = new SaveFileDialog();
174             sfd.Title = "请选择文件存放路径";
175             sfd.FileName = "导出数据";
176             sfd.Filter = "Excel文档(*.xls)|*.xls";
177             if (sfd.ShowDialog() != DialogResult.OK)
178             {
179                 return;
180             }
181             string FileName = sfd.FileName.ToLower();
182             if (!FileName.Contains(".xls"))
183             {
184                 FileName += ".xls";
185             }
186             if (FileName.Substring(FileName.LastIndexOf(Path.DirectorySeparatorChar)).Length <= 5)
187             {
188                 MessageUtil.ShowThreadMessage("文件保存失败，文件名不能为空！");
189                 return;
190             }
191             if (sfd.FileName != "")
192             {
193                 Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
194                 if (excelApp == null)
195                 {
196                     MessageBox.Show("无法创建Excel对象，可能您的机器未安装Excel");
197                     return;
198                 }
199                 else
200                 {
201                     MessageUtil.ShowThreadMessage("正在导出数据，请稍候...");
202                     DateTime start = DateTime.Now;
203                     Microsoft.Office.Interop.Excel.Workbooks workbooks = excelApp.Workbooks;
204                     Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet);
205                     Microsoft.Office.Interop.Excel.Worksheet worksheet = (Worksheet)workbook.Worksheets[1];
206 
207                     for (int col = 1; col <= dt.Columns.Count; col++)
208                     {
209                         worksheet.Cells[1, col] = dt.Columns[col - 1].Caption.ToString();
210                     }
211                     for (int i = 0; i < dt.Rows.Count; i++)
212                     {
213                         for (int j = 0; j < dt.Columns.Count; j++)
214                         {
215                             worksheet.Cells[i + 2, j + 1] = dt.Rows[i][j].ToString();
216                         }
217                     }
218                     workbook.Saved = true;
219                     workbook.SaveCopyAs(sfd.FileName);
220                     //释放资源
221                     System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet);
222                     worksheet = null;
223                     System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
224                     workbook = null;
225                     workbooks.Close();
226                     System.Runtime.InteropServices.Marshal.ReleaseComObject(workbooks);
227                     workbooks = null;
228                     excelApp.Quit();
229                     System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);
230                     excelApp = null;
231                     //使用垃圾回收可以关闭EXCEL.EXE进程
232                     GC.Collect();
233                     DateTime end = DateTime.Now;
234                     int iTimeSpan = (end.Minute - start.Minute) * 60 + (end.Second - start.Second);
235                     MessageUtil.ShowMessage("数据导出完毕,用时" + iTimeSpan.ToString() + "秒");
236                 }
237             }
238         }
239         /// <summary>
240 /// 将数据集存储为Excel文件。
241 /// </summary>
242 /// <param name="p_ds">要导出的数据集。</param>
243         private static void SaveAsExcelSetFile(object p_ds)
244         {
245             System.Data.DataSet ds = (System.Data.DataSet)p_ds;
246             if (ds == null || ds.Tables.Count == 0)
247             {
248                 MessageUtil.ShowError("没有可保存的数据");
249                 return;
250             }
251             SaveFileDialog sfd = new SaveFileDialog();
252             sfd.Title = "请选择文件存放路径";
253             sfd.FileName = "导出数据";
254             sfd.Filter = "Excel文档(*.xls)|*.xls";
255             if (sfd.ShowDialog() != DialogResult.OK)
256             {
257                 return;
258             }
259             string FileName = sfd.FileName.ToLower();
260             if (!FileName.Contains(".xls"))
261             {
262                 FileName += ".xls";
263             }
264             if (FileName.Substring(FileName.LastIndexOf(Path.DirectorySeparatorChar)).Length <= 5)
265             {
266                 MessageUtil.ShowThreadMessage("文件保存失败，文件名不能为空！");
267                 return;
268             }
269             if (sfd.FileName != "")
270             {
271                 Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
272                 if (excelApp == null)
273                 {
274                     MessageBox.Show("无法创建Excel对象，可能您的机器未安装Excel");
275                     return;
276                 }
277                 else
278                 {
279                     MessageUtil.ShowThreadMessage("正在导出数据，请稍候...");
280                     DateTime start = DateTime.Now;
281                     Microsoft.Office.Interop.Excel.Workbooks workbooks = excelApp.Workbooks;
282                     Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet);
283                     Microsoft.Office.Interop.Excel.Worksheet worksheet = null;
284                     object objMissing = System.Reflection.Missing.Value;
285                     for (int m = 0; m < ds.Tables.Count; m++)
286                     {
287                         System.Data.DataTable dt = ds.Tables[m];
288                         worksheet = (Worksheet)workbook.ActiveSheet;
289                         worksheet.Name = dt.TableName;
290                         for (int col = 1; col <= dt.Columns.Count; col++)
291                         {
292                             worksheet.Cells[1, col] = dt.Columns[col - 1].Caption.ToString();
293                         }
294                         for (int i = 1; i <= dt.Rows.Count; i++)
295                         {
296                             for (int j = 1; j <= dt.Columns.Count; j++)
297                             {
298                                 worksheet.Cells[i + 1, j] = dt.Rows[i - 1][j - 1].ToString();
299                             }
300                         }
301                         if (m < ds.Tables.Count - 1)
302                         {
303                             workbook.Sheets.Add(objMissing, objMissing, 1, XlSheetType.xlWorksheet);
304                         }
305                     }
306                     workbook.Saved = true;
307                     workbook.SaveCopyAs(sfd.FileName);
308                     //释放资源
309                     System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet);
310                     worksheet = null;
311                     System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
312                     workbook = null;
313                     workbooks.Close();
314                     System.Runtime.InteropServices.Marshal.ReleaseComObject(workbooks);
315                     workbooks = null;
316                     excelApp.Quit();
317                     System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);
318                     excelApp = null;
319                     GC.Collect();
320                     DateTime end = DateTime.Now;
321                     int iTimeSapn = (end.Minute - start.Minute) * 60 + (end.Second - start.Second);
322                     MessageUtil.ShowMessage("数据导出完毕,用时" + (iTimeSapn / 60).ToString() + "分" + (iTimeSapn % 60).ToString() + "秒");
323                 }
324             }
325         }
326     }
327 }
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原文地址：https://www.cnblogs.com/sunyujing/p/2292018.html