【TeeChart Pro ActiveX教程】（十二）：导入和导出图表（上）

本教程概述了以各种格式导出TeeCharts并导入TeeChart自己的.ten格式图表模板。

下载TeeChart Pro ActiveX最新版本

本教程概述了以各种格式导出TeeCharts并导入TeeChart自己的.ten格式图表模板。

导出图表

可用格式

可用导出格式。可以将所有格式复制到文件或剪贴板或Stream。

图像格式

• BMP：BitmapFormat类
• JPEG：JPEGFormat类
• WMF和EMF：MetafileFormat类
• GIF：GIFFormat类
• PNG：PNGFormat类
• TIFF：TIFFFormat类

数据格式

• Text：TextFormat类
• XML：XMLFormat类
• HTML：HTMLFormat类
• Excel：ExcelFormat类

其他格式

ten格式是一种灵活的格式，可存储图表属性信息和（可选）图表数据。文件很小（取决于数据），非常适合 络用于更新基于实时客户端的图表。

• TEN（TeeChart）：TemplateExport类

示例导出

导出到文件是合理的，在大多数情况下，您只需要定义目标文件名。

[C＃]

private void button1_Click(object sender, System.EventArgs e)             saveFileDialog1.Filter = "Images (*.bmp)|*.bmp|Images(*.jpg)|*.jpg|Images(*.wmf)|*.wmf|Images(*.emf)|*.emf|Images (*.gif)|*.gif|Images (*.png)|*.png|Images (*.tiff)|*.tiff";            saveFileDialog1.ShowDialog();            if(saveFileDialog1.FileName != "")                 switch(saveFileDialog1.FilterIndex)                     case 1:                        tChart1.Export.Image.Bitmap.Save(saveFileDialog1.FileName);                        break;                    case 2:                        tChart1.Export.Image.JPEG.Save(saveFileDialog1.FileName);                        break;                    case 3:                        tChart1.Export.Image.Metafile.Enhanced = false;                        tChart1.Export.Image.Metafile.Save(saveFileDialog1.FileName);                        break;                    case 4:                        tChart1.Export.Image.Metafile.Enhanced = true;                        tChart1.Export.Image.Metafile.Save(saveFileDialog1.FileName);                        break;                    case 5:                        tChart1.Export.Image.GIF.Save(saveFileDialog1.FileName);                        break;                    case 6:                        tChart1.Export.Image.PNG.Save(saveFileDialog1.FileName);                        break;                    case 7:                        tChart1.Export.Image.TIFF.Save(saveFileDialog1.FileName);                        break; 

[VB.Net]

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click        SaveFileDialog1.Filter = "Images (*.bmp)|*.bmp|Images(*.jpg)|*.jpg|Images(*.wmf)|*.wmf|Images(*.emf)|*.emf|Images (*.gif)|*.gif|Images (*.png)|*.png|Images (*.tiff)|*.tiff"        SaveFileDialog1.ShowDialog()        If SaveFileDialog1.FileName <> "" Then            Select Case SaveFileDialog1.FilterIndex                Case 1                    TChart1.Export.Image.Bitmap.Save(SaveFileDialog1.FileName)                Case 2                    TChart1.Export.Image.JPEG.Save(SaveFileDialog1.FileName)                Case 3                    TChart1.Export.Image.Metafile.Enhanced = False                    TChart1.Export.Image.Metafile.Save(SaveFileDialog1.FileName)                Case 4                    TChart1.Export.Image.Metafile.Enhanced = True                    TChart1.Export.Image.Metafile.Save(SaveFileDialog1.FileName)                Case 5                    TChart1.Export.Image.GIF.Save(SaveFileDialog1.FileName)                Case 6                    TChart1.Export.Image.PNG.Save(SaveFileDialog1.FileName)                Case 7                    TChart1.Export.Image.TIFF.Save(SaveFileDialog1.FileName)            End Select        End IfEnd Sub 

导出图片

BMP

BMP文件导出具有颜色和大小的附加参数，例

[C＃]

case 1:     Steema.TeeChart.Export.BitmapFormat bitMap = tChart1.Export.Image.Bitmap;     bitMap.Height = 500;     bitMap.Width = 700;     bitMap.Monochrome = true;     bitMap.Save(saveFileDialog1.FileName);     break; 

[VB.Net]

Case 1     Dim BitMap As Steema.TeeChart.Export.BitmapFormat = TChart1.Export.Image.Bitmap     BitMap.Height = 500     BitMap.Width = 700     BitMap.Monochrome = True     BitMap.Save(SaveFileDialog1.FileName) 

JPEG

JPEG文件导出现在具有SaveToFile和SaveToStream的速度和质量参数，例

[C#]

case 2:Steema.TeeChart.Export.JPEGFormat jPEG = tChart1.Export.Image.JPEG;     jPEG.GrayScale = true;     jPEG.Height = 500;     jPEG.Width = 700;     jPEG.Quality = 100;     jPEG.Save(saveFileDialog1.FileName);     break; 

[VB.Net]

Case 2Dim JPEGf As Steema.TeeChart.Export.JPEGFormat = TChart1.Export.Image.JPEG     JPEGf.Height = 500     JPEGf.Width = 700     JPEGf.GrayScale = True     JPEGf.Quality = 100     JPEGf.Save(SaveFileDialog1.FileName) 

质量值（从1到100）将使文件更大，从而更慢地通过 络传输 – 但质量更好！您需要根据自己的应用决定最佳平衡。通过将“Enhanced”设置为True，可以简单地创建

WMF和EMF

增强型图元文件，例

[C＃]

case 3:     Steema.TeeChart.Export.MetafileFormat metaFile = tChart1.Export.Image.Metafile;     metaFile.Height = 500;     metaFile.Width = 700;     metaFile.Enhanced = false;     metaFile.Save(saveFileDialog1.FileName);     break; 

[VB.Net]

Case 3     Dim MetaFile As Steema.TeeChart.Export.MetafileFormat = TChart1.Export.Image.Metafile     MetaFile.Height = 500     MetaFile.Width = 700     MetaFile.Enhanced = False     MetaFile.Save(SaveFileDialog1.FileName)

由于Microsoft的.Net Framework类库，特别是 System.Drawing.Imaging命名空间中包含的类， GIF TeeChart for .Net能够支持以GIF格式导出位图，例

[C＃]

case 5:     Steema.TeeChart.Export.GIFFormat gIF = tChart1.Export.Image.GIF;     gIF.Height = 500;     gIF.Width = 700;     gIF.ColorReduction = Steema.TeeChart.Export.GIFFormat.GIFColorReduction.GrayScale;     gIF.Save(saveFileDialog1.FileName);     break; 

[VB.Net]

Case 5     Dim GIF As Steema.TeeChart.Export.GIFFormat = TChart1.Export.Image.GIF     GIF.Height = 500     GIF.Width = 700     GIF.ColorReduction = Steema.TeeChart.Export.GIFFormat.GIFColorReduction.GrayScale     GIF.Save(SaveFileDialog1.FileName) 

PNG

PNG格式保留了GIF格式的许多优点，但也提供了超出GIF格式的功能。PNG改进了GIF逐步显示图像的能力; 也就是说，当图像通过 络连接到达时，显示更好和更好的图像近似值，例：

[C＃]

case 6:     Steema.TeeChart.Export.PNGFormat pNG = tChart1.Export.Image.PNG;     pNG.Compression = 100;     pNG.GrayScale = true;     pNG.Height = 500;     pNG.Width = 700;     pNG.Save(saveFileDialog1.FileName);     break; 

[VB.Net]

Case 6     Dim PNGf As Steema.TeeChart.Export.PNGFormat = TChart1.Export.Image.PNG     PNGf.Compression = 100     PNGf.GrayScale = True     PNGf.Height = 500     PNGf.Width = 700     PNGf.Save(SaveFileDialog1.FileName) 

TIFF

TIFF是一种灵活且可扩展的格式，受到各种平台和图像处理应用程序的支持。 例

[C#]

case 7:     Steema.TeeChart.Export.TIFFFormat tIFF = tChart1.Export.Image.TIFF;     tIFF.Compression = Steema.TeeChart.Export.TIFFFormat.TIFFCompression.LZW;     tIFF.Height = 500;     tIFF.Width = 700;     tIFF.Save(saveFileDialog1.FileName);     break; 

[VB.Net]

Case 7     Dim TIFF As Steema.TeeChart.Export.TIFFFormat = TChart1.Export.Image.TIFF     TIFF.Compression = Steema.TeeChart.Export.TIFFFormat.TIFFCompression.LZW     TIFF.Height = 500     TIFF.Width = 700     TIFF.Save(SaveFileDialog1.FileName)

Adobe Flex/Flash/SWF

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