learningmodel_loadfromstoragefileasync_532232733.md

-api-id	-api-type
M:Windows.AI.MachineLearning.LearningModel.LoadFromStorageFileAsync(Windows.Storage.IStorageFile)	winrt method

Windows.AI.MachineLearning.LearningModel.LoadFromStorageFileAsync

-description

Loads an ONNX model from an IStorageFile asynchronously.

-parameters

-param modelFile

The location of the model file.

-returns

A LearningModel based on the model file.

-remarks

Windows Server

To use this API on Windows Server, you must use Windows Server 2019 with Desktop Experience.

Thread safety

This API is thread-safe.

-see-also

-examples

The following example loads the model and creates an evaulation session with it.

private async Task LoadModelAsync(string _modelFileName)
{
    LearningModel _model;
    LearningModelSession _session;

    try
    {
        // Load and create the model
        var modelFile = 
            await StorageFile.GetFileFromApplicationUriAsync(new Uri($"ms-appx:///Assets/{_modelFileName}"));
        _model = await LearningModel.LoadFromStorageFileAsync(modelFile);

        // Create the evaluation session with the model
        _session = new LearningModelSession(_model);

    }
    catch (Exception ex)
    {
        StatusBlock.Text = $"error: {ex.Message}";
        _model = null;
    }
}