Your First Aspose.Diagram Application - Hello World
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This tutorial shows how to create a very first application (Hello World) using Aspose.Diagram' simple API. This simple application creates a Microsoft Visio file with the text ‘Hello World’ in a specified Page.
Creating the Hello World Application
The steps below creates the Hello World application using the Aspose.Diagram API:
- Create an instance of the Diagram class.
- If you have a license, then apply it. If you are using the evaluation version, skip the license related code lines.
- Create a new Visio file, or open an existing Visio file.
- Create a new text box.
- Insert the words Hello World! into a text box.
- Generate the modified Microsoft Visio file.
The implementation of the above steps is demonstrated in the examples below.
Code Sample: Creating a New Diagram
The following example creates a new diagram from the scratch, writes Hello World! on the first page and saves the Visio file.
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// For complete examples and data files, please go to https://github.com/aspose-diagram/Aspose.Diagram-for-.NET | |
// The path to the documents directory. | |
string dataDir = RunExamples.GetDataDir_LoadSaveConvert(); | |
// Initialize a Diagram class | |
Diagram diagram = new Diagram(); | |
// Save diagram in the VSDX format | |
diagram.Save(dataDir + "CreateNewVisio_out.vsdx", SaveFileFormat.VSDX); |
Code Sample: Opening an Existing File
The following example opens an existing Microsoft Visio template file named “Sample.vsdx”, inputs “Hello World!” text in the first page and saves the diagram.
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// For complete examples and data files, please go to https://github.com/aspose-diagram/Aspose.Diagram-for-.NET | |
// The path to the documents directory. | |
string dataDir = RunExamples.GetDataDir_LoadSaveConvert(); | |
// Call the diagram constructor to load a VSD stream | |
FileStream st = new FileStream(dataDir + "Drawing1.vsdx", FileMode.Open); | |
Diagram vsdDiagram = new Diagram(st); | |
st.Close(); | |
// Call the diagram constructor to load a VDX diagram | |
Diagram vdxDiagram = new Diagram(dataDir + "Drawing1.vdx"); | |
/* | |
* Call diagram constructor to load a VSS stencil | |
* providing load file format | |
*/ | |
Diagram vssDiagram = new Diagram(dataDir + "Basic.vss", LoadFileFormat.VSS); | |
/* | |
* Call diagram constructor to load diagram from a VSX file | |
* providing load options | |
*/ | |
LoadOptions loadOptions = new LoadOptions(LoadFileFormat.VSX); | |
Diagram vsxDiagram = new Diagram(dataDir + "Drawing1.vsx", loadOptions); |