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【TeeChart .NET教程】（十二）導出和導入圖表

翻譯|使用教程|編輯：王香|2018-08-13 09:21:48.000|閱讀 1005 次

概述：本文詳細介紹了如何在TeeChart中導出和導入圖表

# 界面/圖表報表/文檔/IDE等千款熱門軟控件火熱銷售中 >>

相關鏈接：

【下載TeeChart.Net最新版本】

（一）導出圖表

1.1 可用格式

可用導出格式，可以將所有格式復制到文件或剪貼板或Stream。

1.1.1 圖像格式

BMP: BitmapFormat Class
JPEG: JPEGFormat Class
WMF & EMF: MetafileFormat Class
GIF: GIFFormat Class
PNG: PNGFormat Class
TIFF: TIFFFormat Class

1.1.2 數據格式

Text: TextFormat Class
XML: XMLFormat Class
HTML: HTMLFormat Class
Excel: ExcelFormat Class

1.1.3 其他格式

TEN格式是一種靈活的格式，可存儲圖表屬性信息和（可選）圖表數據，文件很小（取決于數據），非常適合網絡用于更新基于實時客戶端的圖表。

TEN (TeeChart): TemplateExport Classs

1.2 示例導出

導出到文件是合理的，在大多數情況下，只需要定義目標文件名。

[C#.Net]

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 If 
End Sub

（二）導出圖像

2.1 BMP

BMP文件導出具有顏色和大小的附加參數。例：

[C#.Net]

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)

2.2 JPEG

JPEG文件導出現在具有SaveToFile和SaveToStream的速度和質量參數，例

[C#.Net]

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 2 
Dim 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)

Quality value質量值（從1到100）將使文件更大，網絡傳輸就慢，但質量更好！您需要根據自己的應用決定最佳平衡。通過將“Enhanced”設置為True簡單地創(chuàng)建

2.3 WMF & EMF

通過將“Enhanced”設置為True，可以簡單地創(chuàng)建增強型圖元文件，例：

[C#.Net]

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)

2.4 GIF

由于Microsoft的.Net Framework類庫，特別是System.Drawing.Imaging命名空間中包含的類，TeeChart for .Net能夠支持以GIF格式導出位圖。到目前為止，尚不清楚在其應用程序中實現這些類的開發(fā)人員是否需要從Unisys獲得GIF專利許可。

[C#.Net]

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)

2.5 PNG

PNG格式保留了GIF格式的許多優(yōu)點，但也提供了超出GIF格式的功能，PNG改進了GIF逐步顯示圖像的能力。也就是說，當圖像通過網絡連接到達時，顯示更好和更好的圖像近似值，例

[C#.Net]

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)

2.6 TIFF

TIFF是一種靈活且可擴展的格式，受到各種平臺和圖像處理應用程序的支持，例

[C#.Net]

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)

2.7 Adobe Flex/Flash/SWF

TeeChart現在可以導出為Adobe Flex腳本文件（* .mxml），然后可以通過Flex的免費編譯器（mxmlc.exe）進行編譯，以創(chuàng)建* .swf（Flash）文件。

（三）導出數據

系列數據有四種導出格式：

Text: TextFormat Class
XML: XMLFormat Class
HTML: HTMLFormat Class
Excel: ExcelFormat Class

上述組件可以與圖表系列相關聯，從中可以將數據導出為文件，Stream或剪貼板。以下示例將圖表系列中的數據導出到HTML表：

[C#.Net]

private void Form1_Load(object sender, System.EventArgs e)  
            Random rnd = new Random(); 
            char c = new char(); 
 
            for(int i = 0; i < 10; ++i)  
                c = Convert.ToChar(65 + i); 
                bar1.Add(Convert.ToDouble(i),rnd.Next(100),c.ToString(),Color.Red); 
             
            Steema.TeeChart.Export.DataExport dataExport = new Steema.TeeChart.Export.DataExport(tChart1.Chart); 
            dataExport.HTML.IncludeHeader = true; 
            dataExport.HTML.IncludeIndex = true; 
            dataExport.HTML.IncludeLabels = true; 
            dataExport.HTML.Series = bar1; 
            dataExport.HTML.Save(@"C:.htm");

[VB.Net]

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 
            Dim C As New Char() 
            Dim i As New Integer() 
 
            For i = 0 To 10 
                C = Convert.ToChar(65 + i) 
                Bar1.Add(Convert.ToDouble(i), Rnd() * 100, C.ToString(), Color.Red) 
            Next 
            Dim DataExport As New Steema.TeeChart.Export.DataExport(TChart1.Chart) 
            DataExport.HTML.IncludeHeader = True 
            DataExport.HTML.IncludeIndex = True 
            DataExport.HTML.IncludeLabels = True 
            DataExport.HTML.Series = Bar1 
            DataExport.HTML.Save("C:.htm") 
End Sub

帶有隨機數據集的上述輸出如下：

<table border="1"> 
<tr><td>Index</td><td>Text</td><td>bar1</td></tr> 
<tr><td>0</td><td>A</td><td>69</td></tr> 
<tr><td>1</td><td>B</td><td>93</td></tr> 
<tr><td>2</td><td>C</td><td>18</td></tr> 
<tr><td>3</td><td>D</td><td>88</td></tr> 
<tr><td>4</td><td>E</td><td>42</td></tr> 
<tr><td>5</td><td>F</td><td>33</td></tr> 
<tr><td>6</td><td>G</td><td>58</td></tr> 
<tr><td>7</td><td>H</td><td>43</td></tr> 
<tr><td>8</td><td>I</td><td>63</td></tr> 
<tr><td>9</td><td>J</td><td>49</td></tr> 
</table>

（四）TeeChart的'Ten'模板和數據導出/導入格式

Ten files

Ten files是TeeChart自己的模板格式，用于保存圖表及其數據。修改的圖表屬性隨模板一起保存，并在模板導入新圖表時重現，優(yōu)點：

大小非常小，在大多數情況下，它提供了優(yōu)于純圖形格式（qicker）的優(yōu)勢。
模板的目標圖表是“live實時”，可以進行縮放和滾動，并修改其屬性。
根據用戶的喜好，數據可以選擇包含在十個模板中。

例：

[C#.Net]

private void button1_Click(object sender, System.EventArgs e)  
            saveFileDialog1.Filter = "TenFile (.ten)|*.ten"; 
            saveFileDialog1.ShowDialog(); 
            if(saveFileDialog1.FileName != "")  
                tChart1.Export.Template.IncludeData = true; 
                tChart1.Export.Template.Save(saveFileDialog1.FileName);

[VB.Net]

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click 
        SaveFileDialog1.Filter = "TenFile (.ten)|*.ten" 
        SaveFileDialog1.ShowDialog() 
        If SaveFileDialog1.FileName <> "" Then 
            TChart1.Export.Template.IncludeData = True 
            TChart1.Export.Template.Save(SaveFileDialog1.FileName) 
        End If 
End Sub

（五）導入

5.1 將XML導入TeeChart

5.1.1 從TextBox導入XML

[C#.Net]

protected override void button1_Click(object sender, System.EventArgs e)  
            tChart1.Series.RemoveAllSeries(); 
            Steema.TeeChart.Styles.Points points1 = new Steema.TeeChart.Styles.Points(tChart1.Chart); 
            points1.Title = "Points Series"; 
            xmlSource1.Series = points1; 
            xmlSource1.SeriesNode = "Points Series"; 
            xmlSource1.Load(textBox2.Text); 
            tChart1.Refresh();

5.1.2 從URL導入XML

[C#.Net]

protected override void button2_Click(object sender, System.EventArgs e)  
            tChart1.Series.RemoveAllSeries(); 
            xmlSource1.Chart = tChart1.Chart; 
            xmlSource1.Load("//www.steema.com/SampleNETData.xml"); 
 
            tChart1.Refresh();

5.2 導入Ten格式文件

從本地文件源或http數據源導入已保存的Ten文件。

5.3 導入示例

5.3.1 從文件導入

[C#.Net]

tChart1.Import.Template.LoadFileDialog();

[VB.Net]

TChart1.Import.Template.LoadFileDialog()

5.3.2 URl

[C#.Net]

tChart1.Import.Template.FromURL("//www.berneda.com/demo.ten");

[VB.Net]

TChart1.Import.Template.FromURL("//www.berneda.com/demo.ten")

5.3.3 Stream

[C#.Net]

System.IO.MemoryStream tenStream = new System.IO.MemoryStream(); 
tChart1.Export.Template.Save(tenStream); 
tChart2.Import.Template.Load(tenStream);

[VB.Net]

Dim TenStream As New System.IO.MemoryStream() 
TChart1.Export.Template.Save(TenStream) 
TChart2.Import.Template.Load(TenStream)

5.4 導入圖表所做更改的效果

As.ten文件時所做更改的效果僅保存對標準圖表定義的更改，如果目標圖表包含未導入要導入的圖表的屬性更改，則原件將繼續(xù)執(zhí)行。一個例子是圖表頁腳。如果.ten文件未設置頁腳并且目標圖表具有，則頁腳將在導入后通過圖表顯示。如果希望在導入圖表后對導入圖表進行更改可能會對所需結果產生負面影響，那么可以創(chuàng)建圖表的新實例，如下例所示：

[C#.Net]

private void Form1_Load(object sender, System.EventArgs e)  
        Bar bar1 = new Bar(tChart1.Chart); 
        bar1.FillSampleValues(20); 
 
private void button1_Click(object sender, System.EventArgs e)  
        saveFileDialog1.Filter = "TenFile (.ten)|*.ten"; 
        saveFileDialog1.ShowDialog(); 
        if(saveFileDialog1.FileName != "")  
            tChart1.Export.Template.IncludeData = true; 
            tChart1.Export.Template.Save(saveFileDialog1.FileName); 
         
 
private void button2_Click(object sender, System.EventArgs e)  
        tChart1.Dispose(); 
        tChart1 = new Steema.TeeChart.TChart(); 
        ini_Chart(); 
 
private void ini_Chart()  
        this.tChart1.Header.Lines = new string[] "TeeChart"; 
        this.tChart1.Location = new System.Drawing.Point(24, 24); 
        this.tChart1.Name = "tChart1"; 
        this.tChart1.Size = new System.Drawing.Size(400, 240); 
        this.tChart1.TabIndex = 5; 
        this.Controls.AddRange(new System.Windows.Forms.Control[] this.tChart1); 
 
private void button3_Click(object sender, System.EventArgs e)  
        tChart1.Import.Template.LoadFileDialog();

[VB.Net]

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 
        Dim Bar1 As New Steema.TeeChart.Styles.Bar(TChart1.Chart) 
        Bar1.FillSampleValues(20) 
End Sub 
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click 
        SaveFileDialog1.Filter = "TenFile (.ten)|*.ten" 
        SaveFileDialog1.ShowDialog() 
        If Not SaveFileDialog1.FileName = "" Then 
            TChart1.Export.Template.IncludeData = True 
            TChart1.Export.Template.Save(SaveFileDialog1.FileName) 
        End If 
End Sub 
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click 
        TChart1.Dispose() 
        TChart1 = New Steema.TeeChart.TChart() 
        Ini_Chart() 
End Sub 
Private Sub Ini_Chart() 
        Me.TChart1.Header.Lines = New String() "TeeChart" 
        Me.TChart1.Location = New System.Drawing.Point(16, 16) 
        Me.TChart1.Name = "TChart1" 
        Me.TChart1.Size = New System.Drawing.Size(400, 296) 
        Me.TChart1.TabIndex = 3 
        Me.Controls.AddRange(New System.Windows.Forms.Control() Me.TChart1) 
End Sub 
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click 
        TChart1.Import.Template.LoadFileDialog() 
End Sub