Add functions to store blob, get blob, directly assign blob to html element

[Tailslide]

There is also a new WASM test project where you can play with the new functions
Implements Issue #45

Add a binary blob to the store

string AddBlobItem<TEntity>(string objectStoreName, TEntity item, string mimeType, string key = "")

  var result = await BlobDb.AddBlobItem<byte[]>("StoreName", Blob,"image/jpeg", "myrecordkey1");

Update binary blob in the store

string UpdateBlobByKey<TEntity>(string objectStoreName, TEntity item, string mimeType, string key)

  var result = BlobDb.UpdateBlobByKey<byte[]>("StoreName", Blob, "image/png", "myrecordkey1");

Get marshalled base 64 encoded blob from the store (slow!)

ValueTask<string> GetBlobByKey(string objectStoreName, key)

  var result = await BlobDb.GetBlobByKey("StoreName", "myrecordkey1");

Get unmarshalled blob from the store int .net buffer (fast)

ValueTask<string> GetBlobByKey(string objectStoreName, key, byte[] destination, int maxBytes)

  var result = await BlobDb.GetBlobByKey("StoreName", "myrecordkey1", mybuffer, mybuffermaxsize);

Assign blob directly to HTML element without marshalling into .NET (fast)

ValueTask<string> AssignBlobToElement(string objectStoreName, string key, string elementId, string attribute)

  var result = await BlobDb.AssignBlobToElement("StoreName", "myrecordkey1", "myimagetagId","src");

[Ulf-Ason]

Do you think it's far away to get this PR merged?

[amuste]

Do you think it's far away to get this PR merged?

Hi there. I am working on a more extensive set of components for Blazor which I want to release together with the release of .Net6, this is the reason why I have not been able to spend a lot of time carefully reviewing the contributions they have made and for which I am grateful to collaborators. I will try in the next few days to review what is pending and publish a new version. If it is not possible, after the launch of .Net6 I will be able to publish a new version. Thank you very much for using the library

[andersson09]

Do you think it's far away to get this PR merged?

Hi there. I am working on a more extensive set of components for Blazor which I want to release together with the release of .Net6, this is the reason why I have not been able to spend a lot of time carefully reviewing the contributions they have made and for which I am grateful to collaborators. I will try in the next few days to review what is pending and publish a new version. If it is not possible, after the launch of .Net6 I will be able to publish a new version. Thank you very much for using the library

For .NET 6 will you support reading and writing blobs/files as a stream using the latest JsRuntime (dotnet/aspnetcore#34817)?