❔ [System.Text.Json] When to close the stream

I have a very large json file (500 mb or more), so naturally i would use

System.Text.Json

System.Text.Json

in combination with

IAsyncEnumerable<FileMetaDataDto>

IAsyncEnumerable<FileMetaDataDto>

.
Now i want to open a stream to a file using the following:

public static async Task<T?> ReadAsJson<T>(this IContentProvider contentProvider, Uri uri, JsonSerializerOptions? options = null)
        {
            using var stream = await contentProvider.OpenContentStream(uri);
            return await JsonSerializer.DeserializeAsync<T>(stream, options);
        }

public static async Task<T?> ReadAsJson<T>(this IContentProvider contentProvider, Uri uri, JsonSerializerOptions? options = null)
        {
            using var stream = await contentProvider.OpenContentStream(uri);
            return await JsonSerializer.DeserializeAsync<T>(stream, options);
        }

But what if the serializer needs the stream afterwards? If i leave it open, the stream would be dangling in limbo until the GC decides that it really wouldnt neeed that referencing memory anymore....

C#•4y ago•

1 reply

Ploxi

❔ [System.Text.Json] When to close the stream

I have a very large json file (500 mb or more), so naturally i would use

System.Text.Json

System.Text.Json

in combination with

IAsyncEnumerable<FileMetaDataDto>

IAsyncEnumerable<FileMetaDataDto>

.
Now i want to open a stream to a file using the following:

public static async Task<T?> ReadAsJson<T>(this IContentProvider contentProvider, Uri uri, JsonSerializerOptions? options = null)
        {
            using var stream = await contentProvider.OpenContentStream(uri);
            return await JsonSerializer.DeserializeAsync<T>(stream, options);
        }

public static async Task<T?> ReadAsJson<T>(this IContentProvider contentProvider, Uri uri, JsonSerializerOptions? options = null)
        {
            using var stream = await contentProvider.OpenContentStream(uri);
            return await JsonSerializer.DeserializeAsync<T>(stream, options);
        }

But what if the serializer needs the stream afterwards? If i leave it open, the stream would be dangling in limbo until the GC decides that it really wouldnt neeed that referencing memory anymore....

❔ [System.Text.Json] When to close the stream

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