参考网上的方法修改,1000条记录导出只要3S(1GRDM,C2.8CPU).
1.项目添加excel对象类库的引用,Microsoft Excel 11.0 object library(不同版本的Excel,类库不同,这是2003的)
2.代码
1//-***************获取要写入excel的数据源***************
2 Dao model=new Dao();
3 DataTable dt=model.GetFileNameList(0,intPageSize,Convert.ToDateTime(dtPFrom.Value), Convert.ToDateTime(dtPTo.Value));//取得dataGrid绑定的DataSet
4 if(dt==null) return;
5 DataGridTableStyle ts = dataGrid1.TableStyles[0];
6
7
8 //-***************获取excel对象***************
9 string saveFileName="";
10 bool fileSaved=false;
11 SaveFileDialog saveDialog=new SaveFileDialog();
12 saveDialog.DefaultExt ="xls";
13 saveDialog.Filter="Excel文件|*.xls";
14 saveDialog.FileName ="导入记录查询结果 "+DateTime.Today.ToString("yyyy-MM-dd");
15 saveDialog.ShowDialog();
16 saveFileName=saveDialog.FileName;
17 if(saveFileName.IndexOf(":")<0) return; //被点了取消
18 Excel.Application xlApp=new Excel.Application();
19 if(xlApp==null)
20 {
21 MessageBox.Show("无法启动Excel,可能您的机子未安装Excel");
22 return;
23 }
24 Excel.Workbook workbook = xlApp.Workbooks.Add(true);
25 Excel.Worksheet worksheet = (Excel.Worksheet)workbook.Worksheets[1];
26 Excel.Range range;
27
28
29 string oldCaption=dataGrid1.CaptionText;
30 // 列索引,行索引,总列数,总行数
31 int colIndex = 0;
32 int RowIndex = 0;
33 int colCount = ts.GridColumnStyles.Count;
34 int RowCount=dt.Rows.Count;
35
36
37 // *****************获取数据*********************
38 dataGrid1.CaptionVisible = true;
39 dataGrid1.CaptionText = "正在导出数据";
40 // 创建缓存数据
41 object[,] objData = new object[RowCount + 1, colCount];
42 // 获取列标题
43 foreach(DataGridColumnStyle cs in ts.GridColumnStyles)
44 {
45 objData[RowIndex,colIndex++] = cs.HeaderText;
46 }
47
48 // 获取具体数据
49 for(RowIndex =1;RowIndex< RowCount;RowIndex++)
50 {
51 for(colIndex=0;colIndex < colCount;colIndex++)
52 {
53 objData[RowIndex,colIndex] =dt.Rows[RowIndex-1][colIndex+1];
54 }
55
56 }
57
58 //********************* 写入Excel*******************
59
60 range = worksheet.get_Range(xlApp.Cells[2,1],xlApp.Cells[RowCount,colCount]);
61 range.Value2= objData;
62 Application.DoEvents();
63
64 //*******************设置输出格式******************************
65
66 //设置顶部説明
67 range = worksheet.get_Range(xlApp.Cells[1,1],xlApp.Cells[1,colCount]);
68 range.MergeCells = true;
69 range.RowHeight=38;
70 range.Font.Bold=true;
71 range.Font.Size=14;
72 range.Font.ColorIndex=10;//字体颜色
73 xlApp.ActiveCell.FormulaR1C1 = "导入记录查询结果";
74
75 //特殊数字格式
76 range = worksheet.get_Range(xlApp.Cells[2,colCount],xlApp.Cells[RowCount,colCount]);
77 range.NumberFormat="yyyy-MM-dd hh:mm:ss";
78
79 xlApp.Cells.HorizontalAlignment=Excel.Constants.xlCenter;
80 range = worksheet.get_Range(xlApp.Cells[2,1],xlApp.Cells[2,colCount]);
81 range.Interior.ColorIndex = 10;//背景色
82 range.Font.Bold = true;
83 range.RowHeight=20;
84 ((Excel.Range)worksheet.Cells[2,1]).ColumnWidth=25;
85 ((Excel.Range)worksheet.Cells[2,2]).ColumnWidth=13;
86 ((Excel.Range)worksheet.Cells[2,3]).ColumnWidth=18;
87 ((Excel.Range)worksheet.Cells[2,4]).ColumnWidth=15;
88 ((Excel.Range)worksheet.Cells[2,5]).ColumnWidth=22;
89
90 //***************************保存**********************
91 dataGrid1.CaptionVisible = false;
92 dataGrid1.CaptionText = oldCaption;
93 if(saveFileName!="")
94 {
95 try
96 {
97 workbook.Saved =true;
98 workbook.SaveCopyAs(saveFileName);
99 fileSaved=true;
100 }
101 catch(Exception ex)
102 {
103 fileSaved=false;
104 MessageBox.Show("导出文件时出错,文件可能正被打开!\n"+ex.Message);
105 }
106 }
107 else
108 {
109 fileSaved=false;
110 }
111 xlApp.Quit();
112 GC.Collect();//强行销毁
113 TimeSpan dateEnd=new TimeSpan(DateTime.Now.Ticks);
114 TimeSpan tspan=dateBegin.Subtract(dateEnd).Duration();
115 MessageBox.Show(tspan.ToString());
116 if(fileSaved && File.Exists(saveFileName))
117 System.Diagnostics.Process.Start(saveFileName);
1.项目添加excel对象类库的引用,Microsoft Excel 11.0 object library(不同版本的Excel,类库不同,这是2003的)
2.代码
1//-***************获取要写入excel的数据源***************
2 Dao model=new Dao();
3 DataTable dt=model.GetFileNameList(0,intPageSize,Convert.ToDateTime(dtPFrom.Value), Convert.ToDateTime(dtPTo.Value));//取得dataGrid绑定的DataSet
4 if(dt==null) return;
5 DataGridTableStyle ts = dataGrid1.TableStyles[0];
6
7
8 //-***************获取excel对象***************
9 string saveFileName="";
10 bool fileSaved=false;
11 SaveFileDialog saveDialog=new SaveFileDialog();
12 saveDialog.DefaultExt ="xls";
13 saveDialog.Filter="Excel文件|*.xls";
14 saveDialog.FileName ="导入记录查询结果 "+DateTime.Today.ToString("yyyy-MM-dd");
15 saveDialog.ShowDialog();
16 saveFileName=saveDialog.FileName;
17 if(saveFileName.IndexOf(":")<0) return; //被点了取消
18 Excel.Application xlApp=new Excel.Application();
19 if(xlApp==null)
20 {
21 MessageBox.Show("无法启动Excel,可能您的机子未安装Excel");
22 return;
23 }
24 Excel.Workbook workbook = xlApp.Workbooks.Add(true);
25 Excel.Worksheet worksheet = (Excel.Worksheet)workbook.Worksheets[1];
26 Excel.Range range;
27
28
29 string oldCaption=dataGrid1.CaptionText;
30 // 列索引,行索引,总列数,总行数
31 int colIndex = 0;
32 int RowIndex = 0;
33 int colCount = ts.GridColumnStyles.Count;
34 int RowCount=dt.Rows.Count;
35
36
37 // *****************获取数据*********************
38 dataGrid1.CaptionVisible = true;
39 dataGrid1.CaptionText = "正在导出数据";
40 // 创建缓存数据
41 object[,] objData = new object[RowCount + 1, colCount];
42 // 获取列标题
43 foreach(DataGridColumnStyle cs in ts.GridColumnStyles)
44 {
45 objData[RowIndex,colIndex++] = cs.HeaderText;
46 }
47
48 // 获取具体数据
49 for(RowIndex =1;RowIndex< RowCount;RowIndex++)
50 {
51 for(colIndex=0;colIndex < colCount;colIndex++)
52 {
53 objData[RowIndex,colIndex] =dt.Rows[RowIndex-1][colIndex+1];
54 }
55
56 }
57
58 //********************* 写入Excel*******************
59
60 range = worksheet.get_Range(xlApp.Cells[2,1],xlApp.Cells[RowCount,colCount]);
61 range.Value2= objData;
62 Application.DoEvents();
63
64 //*******************设置输出格式******************************
65
66 //设置顶部説明
67 range = worksheet.get_Range(xlApp.Cells[1,1],xlApp.Cells[1,colCount]);
68 range.MergeCells = true;
69 range.RowHeight=38;
70 range.Font.Bold=true;
71 range.Font.Size=14;
72 range.Font.ColorIndex=10;//字体颜色
73 xlApp.ActiveCell.FormulaR1C1 = "导入记录查询结果";
74
75 //特殊数字格式
76 range = worksheet.get_Range(xlApp.Cells[2,colCount],xlApp.Cells[RowCount,colCount]);
77 range.NumberFormat="yyyy-MM-dd hh:mm:ss";
78
79 xlApp.Cells.HorizontalAlignment=Excel.Constants.xlCenter;
80 range = worksheet.get_Range(xlApp.Cells[2,1],xlApp.Cells[2,colCount]);
81 range.Interior.ColorIndex = 10;//背景色
82 range.Font.Bold = true;
83 range.RowHeight=20;
84 ((Excel.Range)worksheet.Cells[2,1]).ColumnWidth=25;
85 ((Excel.Range)worksheet.Cells[2,2]).ColumnWidth=13;
86 ((Excel.Range)worksheet.Cells[2,3]).ColumnWidth=18;
87 ((Excel.Range)worksheet.Cells[2,4]).ColumnWidth=15;
88 ((Excel.Range)worksheet.Cells[2,5]).ColumnWidth=22;
89
90 //***************************保存**********************
91 dataGrid1.CaptionVisible = false;
92 dataGrid1.CaptionText = oldCaption;
93 if(saveFileName!="")
94 {
95 try
96 {
97 workbook.Saved =true;
98 workbook.SaveCopyAs(saveFileName);
99 fileSaved=true;
100 }
101 catch(Exception ex)
102 {
103 fileSaved=false;
104 MessageBox.Show("导出文件时出错,文件可能正被打开!\n"+ex.Message);
105 }
106 }
107 else
108 {
109 fileSaved=false;
110 }
111 xlApp.Quit();
112 GC.Collect();//强行销毁
113 TimeSpan dateEnd=new TimeSpan(DateTime.Now.Ticks);
114 TimeSpan tspan=dateBegin.Subtract(dateEnd).Duration();
115 MessageBox.Show(tspan.ToString());
116 if(fileSaved && File.Exists(saveFileName))
117 System.Diagnostics.Process.Start(saveFileName);