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TeeChart Pro .NET使用教程（2022）：如何導出和導入圖表（下）

原創|行業資訊|編輯：凌霄漢|2022-04-06 16:40:46.300|閱讀 249 次

概述：此次報表開發工具TeeChart Pro .NET使用教程將為大家帶來如何導出和導入圖表。

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本篇文章將會為大家講解上一篇文章《TeeChart Pro .NET使用教程（2022）：如何導出和導入圖表（上）》未講完的部分。

TeeChart Pro .NET下載

導出數據

系列數據有四種導出格式

文本：TextFormat 類
XML：XMLFormat 類
HTML：HTML格式類
Excel：ExcelFormat 類

上述組件可能與圖表系列相關聯，它們可以從中將數據導出為文件、流或剪貼板。以下示例將數據從圖表系列導出到 HTML 表：

[C#] 
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

TeeChart 的“Ten”模板和數據導出/導入格式

Ten文件

Ten文件是 TeeChart 自己的用于保存 Charts 及其數據的模板格式。修改后的圖表屬性與模板一起保存，并在模板導入新圖表時重現。

優點：

十個文件非常小，在大多數情況下提供了優勢超過純圖形格式（更快）。
模板的目標圖表是“實時”的，它可以縮放和滾動并具有其屬性已修改。
根據您的喜好，十個模板可以選擇包含數據。

[C#] 
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

導入

將 XML 導入 TeeChart

從文本框導入 XML。

[C#] 
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();

從 URL 導入 XML。

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

導入Ten格式文件

從本地文件源或 http 數據源導入保存的 Tee 文件。

從文件導入

[C#] 
tChart1.Import.Template.LoadFileDialog(); 
[VB.Net] 
TChart1.Import.Template.LoadFileDialog()

從URL導入

[C#] 
tChart1.Import.Template.FromURL("http://www.berneda.com/demo.ten"); 
[VB.Net] 
TChart1.Import.Template.FromURL("http://www.berneda.com/demo.ten")

從Stream導入

[C#] 
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)

導入 Chart 所做更改的影響

由于 .ten 文件僅保存對標準 Chart 定義的更改，如果目標 Chart 包含要導入的 Chart 未涉及的屬性更改，則將保留原件。一個例子是圖表頁腳。如果 .ten 文件沒有設置頁腳而目標圖表有，則頁腳將在導入后通過圖表顯示。這可能是一個理想的結果。如果您希望在導入 Chart 后對導入 Chart 進行更改，這可能會對所需結果產生不利影響，那么您可以創建一個 Chart 的新實例，如下例所示：

[C#] 
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

如果您想了解TeeChart for .NET正版價格，歡迎咨詢