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What's the best way to store an image in a database in binary format, and how can I implement it using C#?

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If you are using SQL Server, you can use the Image column type.

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image is deprected (msdn.microsoft.com/en-us/library/ms187993.aspx). varbinary(max) is to be prefered for new development work.
what this BLOB column actually meant
IS it meant the binary to used ... i use image column. what it differ
varbinary or binary whats the difference??
Binary is fixed length, whereas Varbinary is variable length. This article explains it quite nicely: msdn.microsoft.com/en-us/library/ms188362.aspx
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You can find the answer to converting your image to binary here:

Convert image to binary?

You would need a BLOB column in your SQL database in order to be able to insert it.

EDIT:

If you want to retrieve it back from the database, you can use the following article to do so:

http://support.microsoft.com/kb/326502

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why image column will not use for that?
I suggested a way to store it in binary format, as you asked. I have no experience with the Image column type, I store it in this BLOB - binary format, or as a Base64 encoded string.

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