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At which event have you written this code?

Required this code in the OnDataBound event. And in your code this event missing.

C# Code:

protected void AuditLogListView_DataBound(object sender, EventArgs e) {AuditLogListView.FindControl("BlockHeaderLiteral").Visible = false;}

In the Sha256::hash function, result is a BYTE array, whereas h0 is a WORD32. You might want to split h0 into 4 BYTEs and store into the result array, but the for loop at the end of the function won't achieve your goal.

What you want to do is to concatenate h0 to h7, and then extract the bytes from h0 to h7 by shifting 24, 16, 8, 0 bits:

You had indentation problems I have fixed it for you:

EFCore entities needs setters, otherwise the reference will not be set.

I'd suggest you would write it something like this to ensure encapsulation