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I am having trouble writing large blobs to a MySQL-Database using the .net entity-framework.
Blobs 1MB a InvalidOperationException with text "Connection must be opened." occurs.

I am using:

1. Visual Studio 2010
2. .Net 3.5
3. Devart ADO.NET Entity Framework (latest)
4. MySSQl (latest)

Help is appreciated.

Update:

Increasing the value of the MySQL-Parameter max_allow_packet actually did the job.

Thank you for sharing the solution.