.NET+ protocol

The VuGen .NET+ (DotNetPlus) protocol is used to create scripts that emulate users of Microsoft .NET client applications created in .NET 6.

In this topic:

• .NET+ protocol overview
• Manually create a .NET+ script
• Replay limitations

.NET+ protocol overview

.NET+ Vuser scripts are coded manually in C#. There is no record option.

The .NET+ protocol enables you to load test by replaying the application’s method calls.

Note:

Although .NET-based and Java protocols support creating threads, we recommend that you do not use background threads in real load testing scenarios because:

• Threads can degrade tests scalability.

• Threads can affect performance measurements.

• The utility functions' behavior is undetermined if called from any thread except the Vuser main thread which runs the vuser_init, Action, and vuser_end actions. This applies to all functions named lr*.

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Manually create a .NET+ script

You can manually code .NET+ scripts in the VuGen editor, or from Visual Studio.

For information on creating and coding scripts, see Code a .NET script.

For information on editing in Visual Studio, see Create and View Vuser Scripts in Visual Studio.

To manually create and edit a .NET+ script:

1. Prerequisites:

   • Download and install the Microsoft .NET 6 SDK.

   • If you are using Visual Studio, make sure a supported version is installed. For details, see the Supported Protocols .

2. In VuGen, in the Create a New Script dialog box, open a new .NET+ script.

3. Open the Runtime Settings window and define the settings for your script. Use the following pages to define how to work with .NET:

   • Dotnet Settings. Define the path to the .NET SDK executable, and the path to any additional build parameters you want to use.

   • Package References. Add NuGet packages for referenced DLLs.

   • Local References. Add local referenced DLLs.

     Note:  

     • You can add COM reference dependencies from Visual Studio only, not from VuGen Runtime Settings.

     • Script replay is supported on 32 and 64-bit. For 64-bit, in Runtime Settings > Miscellaneous, select Replay script with 64-bit.

4. Insert your code into the script. .NET+ supports all the .NET functions. For details, see the Function Reference (select the relevant version).

   Tip: To open and edit the script in Visual Studio, click the button on the toolbar.

   You can include methods returning a dataset, data table, or data reader action, and VuGen generates a grid for displaying the data. For details, see View data sets and grids.

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Replay limitations

The following limitations apply for replay of a .NET+ Vuser script:

• Exceptions in .NET+ scripts generated by vts functions, may cause the replay to abort, even when the Continue on error runtime setting is enabled.
  Workaround: Use try and catch statements for error handling of the vts functions.
• .NET+ scripts that contain UI objects can behave unexpectedly during replay in VuGen, Controller, or on a load generator machine.

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See also:

• .NET protocols