This example shows how to load and save report template from code. First, load scripts:

@using Stimulsoft.Base
@using Stimulsoft.Report

Next, create buttons:

<div align="center">
    <button class="alert" @onclick="LoadReport">Load MRT template</button>
    <br /><br />
    <button class="alert" @onclick="SaveReport">Save MRT template to JSON</button>
    <br /><br />
    <button class="alert" @onclick="RenderReport">Render report</button>
    <br /><br />
    <button class="alert" @onclick="SaveDocument">Save MDC document to JSON</button>
    <br /><br />
	<strong style="display: @(processing ? "" : "none");">Processing...<br /></strong>
    <br />
</div>

Then, add counters:

<div align="center">
    @($"Report template has {pagesTemplateCount} page(s)")
    <br />
    @($"Rendered report has {pagesDocumentCount} page(s)")
</div>

After that, initialize JSRuntime service:

@code
{
	private StiReport Report;

    private int pagesTemplateCount;
    private int pagesDocumentCount;
    private string reportJSON = "";
    private bool processing;

    protected override async Task OnInitializedAsync()
    {
        await base.OnInitializedAsync();
		
		//Create empty report object
		this.Report = new StiReport();
	}

...

Then, use Load method to load report:

...

	private async void LoadReport()
	{
       	//Show processing
        processing = true;

        //Load report template
        var reportBytes = await Http.GetByteArrayAsync("Reports/TwoSimpleLists.mrt");
        this.Report.Load(reportBytes);

        //Render report
        this.Report.Render(false);

        //Show number of pages as proof that it works
        pagesTemplateCount = this.Report.Pages.Count;

        //Hide processing
        processing = false;

        //Refresh view
        StateHasChanged();
    }

...

Next, use SaveToJsonString method to save report:

...

	private void SaveReport()
    {
        //Save report template to JSON string
        reportJSON = report.SaveToJsonString();
    }

...

To render report, use Render method:

...

	private void RenderReport()
    {
        //Show processing
        processing = true;

        //Render report
        await this.Report.RenderAsync();

        //Show number of pages as proof that it works
        pagesDocumentCount = this.Report.RenderedPages.Count;

        //Hide processing
        processing = false;

        //Refresh view
        StateHasChanged();
    }

...

Finally, use SaveDocumentJsonToString to save document:

...
 	
    private void SaveDocument()
    {
        //Save rendered report to JSON string
        reportJSON = report.SaveDocumentJsonToString();
    }
}

In the screenshot below you can see the result of the sample code: