silverlight 将chart图倒入到excel

mainpage.xaml

1  <Grid x:Name="LayoutRoot" Background="White">

2             <StackPanel Orientation="Vertical" >

3             <Button Content="Export to Excel" Height="23" HorizontalAlignment="Left" x:Name="button1" VerticalAlignment="Top" Width="150" Click="button1_Click" />

4             <toolkit:Chart HorizontalAlignment="Left" Name="chart1" Title="Line Chart" VerticalAlignment="Top" Height="300" Width="640" >

5             </toolkit:Chart>

6         </StackPanel>

7     </Grid>

View Code

后台

 1  public MainPage()

 2         {

 3             InitializeComponent();

 4             this.Loaded += new RoutedEventHandler(UserControl_Loaded); ;

 5         }

 6         private void UserControl_Loaded(object sender, RoutedEventArgs e)

 7         {

 8             ObservableCollection<EmployeePoints> empPoints = new ObservableCollection<EmployeePoints>()

 9             { 

10                 new EmployeePoints() { Name = "John", Points = 10 }, 

11                 new EmployeePoints() { Name = "Sam", Points = 40 },

12                 new EmployeePoints() { Name = "Mary", Points = 80 }, 

13                 new EmployeePoints() { Name = "Pierce", Points = 60 }, 

14                 new EmployeePoints() { Name = "Paul", Points = 70 }, 

15             };

16             LineSeries columnSeries = new LineSeries();//实例化一个Series:

17 

18             //注意ColumnSeries所在命名空间   

19 

20             //为：using System.Windows.Controls.DataVisualization.Charting;

21 

22 

23             columnSeries.ItemsSource = empPoints;  //设置数据源

24             columnSeries.DependentValueBinding = new Binding("Points");       //后台进行数据绑定         

25             columnSeries.IndependentValueBinding = new Binding("Name");

26             //columnSeries.Title = "";

27 

28             chart1.Series.Add(columnSeries);//为Chart绑定“显示类型”

29 

30 

31 

32         }

33 

34         private void button1_Click(object sender, RoutedEventArgs e)

35         {

36             WriteableBitmap bitmap = new WriteableBitmap(640, 300);

37             bitmap.Render(chart1, null);

38             bitmap.Invalidate();

39 

40 

41             // open file dailog for selecting export file

42             SaveFileDialog sDialog = new SaveFileDialog();

43             sDialog.Filter = "Excel Files(*.xls)|*.xls";

44 

45             if (sDialog.ShowDialog() == true)

46             {

47                 // create a workbook object

48                 Workbook workbook = new Workbook();

49                 //Create a worksheet object 

50                 Worksheet worksheet1 = new Worksheet("SheetWithImage");

51 

52                 // creat a spreadsheet picture object

53                 Lite.ExcelLibrary.SpreadSheet.Picture pic = new Lite.ExcelLibrary.SpreadSheet.Picture();

54                 //set its image property from silverlight image control

55                 // image formates 0xF01E=png,0xF01D=jpeg

56                 //ImageTranslator.TranslateImageToBytes translate an image control to byte array

57                 // that will be used by excel picture object to plot picture in excel file.

58                 System.Windows.Controls.Image image = new System.Windows.Controls.Image();

59                 image.Source = bitmap;

60                 image.Name = "imgExport";

61                 image.Width = 640;

62                 image.Height = 300;

63                 image.Stretch = Stretch.Fill;

64                 pic.Image = new Lite.ExcelLibrary.SpreadSheet.Image(ImageTranslator.TranslateImageToBytes(image), 0xF01E);

65 

66                 //set picture size

67                 pic.TopLeftCorner = new CellAnchor(1, 1, 10, 10);

68                 pic.BottomRightCorner = new CellAnchor(8, 5, 10, 10);

69                 // add picture to spreadsheet

70                 worksheet1.AddPicture(pic);

71                 /// add worksheet to workbook

72                 workbook.Worksheets.Add(worksheet1);

73                 // get the stream of selected file

74                 Stream sFile = sDialog.OpenFile();

75                 // save excel file 

76                 workbook.Save(sFile);

77             }

78         }

79 

80 

81         public class EmployeePoints

82         {

83             public string Name { get; set; }

84             public int Points { get; set; }

85         }

86     }

View Code

用到了工具       Lite Excel Binaries

下载地址：http://excellite.codeplex.com/

The source from http://sreeharip.wordpress.com/2011/12/04/exporting-a-silverlight-chart-to-excel-in-browser/