后台数据导出为Excel

数据导出的方法如下：

一、下载office的类库：microsoft.office.interop.excel.zip

根据电脑安装的office版本选择引入相应的类库，office2007选择12.0的版本，office2010选择14的版本

二、设置该类库的嵌入互操作类型属性为false，如图

三、调用该方法实现数据的导出

主要代码如下：

 public static bool ExportExcel(System.Data.DataTable dt, string path)
 {
 bool succeed = false;
 if (dt != null)
 {
 Microsoft.Office.Interop.Excel.Application xlApp = null;
 try
 {
 xlApp = new Microsoft.Office.Interop.Excel.ApplicationClass();
 }
 catch (Exception ex)
 {
 throw ex;
 }

 if (xlApp != null)
 {
 try
 {
 Microsoft.Office.Interop.Excel.Workbook xlBook = xlApp.Workbooks.Add(true);
 object oMissing = System.Reflection.Missing.Value;
 Microsoft.Office.Interop.Excel.Worksheet xlSheet = null;

 xlSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlBook.Worksheets[];
 xlSheet.Name = dt.TableName;

 int rowIndex = ;
 int colIndex = ;
 int colCount = dt.Columns.Count;
 int rowCount = dt.Rows.Count;

 //列名的处理
 for (int i = ; i < colCount; i++)
 {
 xlSheet.Cells[rowIndex, colIndex] = dt.Columns[i].ColumnName;
 colIndex++;
 }
 //列名加粗显示

 //同时可以设置样式等
 xlSheet.get_Range(xlSheet.Cells[rowIndex, ], xlSheet.Cells[rowIndex, colCount]).Font.Bold = true;
 xlSheet.get_Range(xlSheet.Cells[rowIndex, ], xlSheet.Cells[rowCount + , colCount]).Font.Name = "Arial";
 xlSheet.get_Range(xlSheet.Cells[rowIndex, ], xlSheet.Cells[rowCount + , colCount]).Font.Size = "";
 rowIndex++;

 //数据内容逐行写入，当数据量大的时候建议采用异步回调方法；

 for (int i = ; i < rowCount; i++)
 {
 colIndex = ;
 for (int j = ; j < colCount; j++)
 {
 xlSheet.Cells[rowIndex, colIndex] = dt.Rows[i][j].ToString();
 colIndex++;
 }
 rowIndex++;
 }
 xlSheet.Cells.EntireColumn.AutoFit();

 xlApp.DisplayAlerts = false;
 path = System.IO.Path.GetFullPath(path);
 xlBook.SaveCopyAs(path);
 xlBook.Close(false, null, null);
 xlApp.Workbooks.Close();
 Marshal.ReleaseComObject(xlSheet);
 Marshal.ReleaseComObject(xlBook);
 xlBook = null;
 succeed = true;
 }
 catch (Exception ex)
 {
 succeed = false;
 }
 finally
 {
 xlApp.Quit();
 Marshal.ReleaseComObject(xlApp);
 int generation = System.GC.GetGeneration(xlApp);
 xlApp = null;
 System.GC.Collect(generation);
 }
 }
 }
 return succeed;
 }

office链接类库：http://files.cnblogs.com/files/weiweiboqi/microsoft.office.interop.excel.zip