How to Resolve Export Issues in Blazor Reports

Exporting reports in a Blazor application is a common requirement for generating printable or downloadable versions of data visualizations. However, issues may arise due to improper resource management, event handling, or navigation. One such issue can be resolved by invoking the DisposeObject JavaScript function during the NavMenu collapse event.

Improper disposal of objects can often lead to export-related problems. To avoid such issues, follow proper disposal practices such as: implementing the IDisposable interface, handling object disposal, and releasing resources when they are no longer needed.

1. Invoke Dispose Object JS call in NavMenu Collapse Event:
   If you’ve identified that collapsing the navigation menu is affecting the report export functionality, consider invoking the DisposeObject JavaScript function during the collapse event.

protected override async Task OnInitializedAsync() 
   { 
       await JSRuntime.InvokeVoidAsync("BoldReports.DisposeObject", "report-viewer"); 
   }

The DisposeObject function is designed to destroy the report viewer processing objects when called as given below:

DisposeObject: function (elementID) { 
       debugger; 
       var reportviewerObj = $("#" + elementID).data("boldReportViewer"); 

       if (reportviewerObj) { 
           reportviewerObj.destroy(); //Destroy the report viewer processing objects. 
       } 
   }

2. Integrate NavigationManager for Object Disposal:
   To ensure proper cleanup before navigating between pages, use NavigationManager in your Blazor component. This approach helps prevent issues caused by leftover objects from the previous view. Refer to the below to solve it.

@inject NavigationManager Navigation

@code {

       private void NavigateToCounterComponent()
       {
           Navigation.NavigateTo("counter");
       }
   
       protected override void OnInitialized()
       {
           Navigation.LocationChanged += HandleLocationChanged;
       }
   
       private void HandleLocationChanged(object sender, LocationChangedEventArgs e)
       {
           Logger.LogInformation("URL of new location: {Location}", e.Location);
       }
   
       public void Dispose()
       {
           Navigation.LocationChanged -= HandleLocationChanged;
       }
   }

By following these steps, you can effectively resolve problems related to exporting reports in your Blazor application and ensure a smoother user experience.