如何从以编程方式生成的SSIS包中获取GraphLayout XML

Question

如果您在Visual Studio中打开SSIS DTSX包，则设计器会创建一些其他包末尾的CDATA块内的DesignTimeProperties。

看起来像

<DTS:DesignTimeProperties >< ![CDATA[<?xml version="1.0"?>
<!--This CDATA section contains the layout information of the package.The section includes information such as (x, y) coordinates, width, and height.-->
<!--If you manually edit this section and make a mistake, you can delete it. -->
<!--The package will still be able to load normally but the previous layout information will be lost and the designer will automatically re-arrange the elements on the design surface.-->
<Objects Version="8">
  <!--Each node below will contain properties that do not affect runtime behavior.-->
   <Package design-time-name="Package">
   <LayoutInfo >
     <GraphLayout Capacity="16" xmlns="clr-namespace:Microsoft.SqlServer.IntegrationServices.Designer.Model.Serialization;assembly=Microsoft.SqlServer.IntegrationServices.Graph" 
          xmlns:mssgle="clr-namespace:Microsoft.SqlServer.Graph.LayoutEngine;assembly=Microsoft.SqlServer.Graph" 
          xmlns:assembly="http://schemas.microsoft.com/winfx/2006/xaml" 
          xmlns:mssgm="clr-namespace:Microsoft.SqlServer.Graph.Model;assembly=Microsoft.SqlServer.Graph">
       <NodeLayout
         Size="146.5,41.5"
         Id="Package\Datenflusstask"
         TopLeft="71.9999971389772,45.7600003636678" />
       <NodeLayout
         Size="155,41.5"
         Id="Package\Datenflusstask 1"
         TopLeft="126.666661633386,127.573334347195" />
   ....

问题是，仅当在Visual Studio中打开包，而在集成服务项目。

如果我以编程方式创建带有ManagedDTS的程序包，则此信息丢失。

我确实在Microsoft.SqlServer.IntegrationServices.Designer.Model.Serialization中找到了SerializerHelper类程序集Microsoft.SqlServer.IntegrationServices.Graph.dll中的命名空间，您可以在其中调用

var graphLayoutXml = SerializerHelper.Save(graphModelElement);

但是很遗憾，缺少坐标（NaN或0,0 ..]

我现在所做的是将程序包加载为字符串

string contents = String.Empty;
Microsoft.SqlServer.Dts.Runtime.Package package = 
    new Microsoft.SqlServer.Dts.Runtime.Package();
using (StreamReader r = new StreamReader("DemoPackageWithoutDesignTimeProperties.dtsx"))
{
    contents = r.ReadToEnd();
}
package.LoadFromXML(contents, null);

然后通过]获取ControlFlowElements>

ControlFlowGraphModelElement controlFlowGraphModelElement = 
    new ControlFlowGraphModelElement();
controlFlowGraphModelElement.Initialize(package as IDTSSequence);
随后尝试通过以下方式获取GraphLayoutXml：>
GraphModelElement graphModelElement = new GraphModelElement();
graphModelElement.Container = controlFlowGraphModelElement.Container;
var graphLayoutXml = SerializerHelper.Save(graphModelElement);    
显然，我缺少一些布局。任何人都可以以正确的方式提供帮助...
我知道Microsoft.SqlServer.IntegrationServices.Graph.dll中的其他几个类，例如LayoutGraph中的GraphLayout，GraphControl和Microsoft.SqlServer.Graph.dll，但不幸的是文档不是那么有用。.

如果在Visual Studio中打开SSIS DTSX包，则设计器会在包末尾的CDATA块内创建一些其他DesignTimeProperty。看起来像<...>

Answer 1

为什么不起作用？

首先，我想以@Fredipux的精彩评论开始：