Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Create a filter stream that passes through to the stream you want to append to, but doesn't close that stream when it is itself closed:</p> <pre><code>public class AppendingStream : Stream { private readonly long _startPos; private readonly Stream _sink; public AppendingStream(Stream sink) { if(sink == null) throw new ArgumentNullException(); if(!sink.CanWrite) throw new ArgumentException(); _sink = sink; try { _startPos = sink.Position; } catch(NotSupportedException) { _startPos = -1; } } public override bool CanRead { get { return false; } } public override bool CanSeek { get { return _sink.CanSeek &amp;&amp; _startPos != -1; } } public override bool CanTimeout { get { return _sink.CanTimeout; } } public override bool CanWrite { get { return true; } } public override long Length { get { if(_startPos == -1) throw new NotSupportedException(); return _sink.Length - _startPos; } } public override long Position { get { return _sink.Position - _startPos; } set { _sink.Position = value + _startPos; } } public override void Flush() { _sink.Flush(); } public override int Read(byte[] buffer, int offset, int count) { throw new NotSupportedException(); } public override int ReadByte() { throw new NotSupportedException(); } public override long Seek(long offset, SeekOrigin origin) { if(origin == SeekOrigin.Begin) return _sink.Seek(offset + _startPos, SeekOrigin.Begin) - _startPos; else return _sink.Seek(offset, origin); } public override void SetLength(long value) { if(_startPos == -1) throw new NotSupportedException(); _sink.SetLength(value + _startPos); } public override void Write(byte[] buffer, int offset, int count) { _sink.Write(buffer, offset, count); } public override void WriteByte(byte value) { _sink.WriteByte(value); } } </code></pre> <p>Then you've no longer got the issue of the stream being closed, as it doesn't matter.</p> <p>The bits to deal with seeking to new positions is because some image formats are written in a non-sequential manner. It won't work if the underlying stream doesn't support it, but then that wouldn't work anyway.</p>
    singulars
    1. This table or related slice is empty.
    1. POGet raw data back from instance of Image
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USJon Hanna
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POGet raw data back from instance of Image
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload