使用动态视图保存图表 [英] Saving charts with dynamic view

问题描述

在我的WinForms应用程序中，我必须显示线图。

我需要在我的应用程序中实现的一个功能是将图表保存到文件。保存图表并关闭应用程序后，可以打开保存的图表，用户可以放大/缩小图表进行分析。

大多数图表工具使用户可以将图表保存到像.png / .jpg等图像文件，这是静态的。

我想实现类似 Matlab的FIG文件 。有没有控制，已经这样做？

解决方案

你有几个选择：

• 另存为 Jpg 或 Png 尺寸足够大以缩放。为此，您可以放大图表然后再保存，然后再收缩。 / p>




• 保存为 emf 格式之一。这保存了矢量格式，因此放大效果非常好，即使在大的缩放系数。 但，您需要一个特殊的查看器才能显示 emf 格式或用于将转换为更标准的< c $ c> wmf 格式比图创建的格式。很奇怪， MS图表以 .Net 格式保存无法读取： - （

  / li>
  

• 保存到 XML 这意味着序列化，使用标准选项属性可序列化或不可序列化。请参见此代码直接从链接：

    string yourChartDataFile =d：\\\ \\ SavedChartData.xml; 
   
   private void saveButton_Click（object sender，EventArgs e）
   {
   chart1.Serializer.Save（yourChartDataFile）; 
  } 
   
   private void loadButton_Click（object sender，EventArgs e）
   {
   chart1.Serializer.Load（yourChartDataFile）; 
  } 
    

要显示生成的文件，您需要另一个图表 control。显然。

我发现上面的两行工作相当好，没有添加褶边，但你可能需要或想保存的东西，如当前缩放状态或注释状态;我不知道什么是得到序列化的盒子和什么不..

In my WinForms application, I have to display line graphs.

One feature which I need to implement in my application is saving the chart to a file. Once the chart is saved and the application is closed, the saved chart can be opened and the user can zoom-in/zoom-out the chart for analysis.

Most charting tools enable user to save the chart to an image file like .png/.jpg etc., which are static.

I want to achieve something like Matlab's FIG file. Are there controls which already do this? Or if I have to implement it myself, what is the best approach?

解决方案

You have a couple of options:

• Save as Jpg or Png in a size large enough to zoom in. To do so you would enlarge the chart before saving and then shrink it again.

• Save in one of the emf formats. This saves a vector format, so zooming in works very well, even at large zoom factors. However you need a special viewer to display the emf formats or a tool to convert them to a more standard wmf format than what chart creates. Rather strange that the MS chart saves in a format .Net can't read :-(

• Save to XML. This means serializing, either using the standard options or by marking certain properties as serializable or non-serializable. See here for more info! This code is straight from the link:

  string yourChartDataFile = "d:\\SavedChartData.xml";
  
  private void saveButton_Click(object sender, EventArgs e)
  {
      chart1.Serializer.Save(yourChartDataFile);
  }
  
  private void loadButton_Click(object sender, EventArgs e)
  {
      chart1.Serializer.Load(yourChartDataFile);
  }
  

To display the resulting file you need another chart control, obviously.

I found the two-liner above to work pretty well without adding frills, but you may need or want to save things like current zoom state or annotation states; I'm not sure just what does get serialized out of the box and what does not..

这篇关于使用动态视图保存图表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！