Converting to Byte Array after reading a BLOB from SQL in C#

Question

I need to read a BLOB and store it in a byte[], before going forward with Deserializing;

Consider:

 //Reading the Database with DataAdapterInstance.Fill(DataSet);
     DataTable dt = DataSet.Tables[0];
    foreach (DataRow row in dt.Rows)
    {
    byte[] BinDate = Byte.Parse(row["Date"].ToString()); // convert successfully to byte[]

    }

I need help in this C# statement, as I am not able to convert an object type into a byte[]. Note, "Date" field in the table is a blob and not of type Date;

Help appreciated; Soham

You may take a look at the answer I gave to a similar question: http://stackoverflow.com/questions/625029/how-do-i-store-and-retrieve-a-blob-from-sqlite/625485#625485 — Darin Dimitrov, Apr 17 '10 at 10:40

score 18 · Accepted Answer · answered Apr 17 '10 at 10:41

18

Just cast the value to a byte array:

byte[] binDate = (byte[])row["Date"];

A blob in the database maps to a byte array in .NET, so the database driver have already done that conversion for you.

answered Apr 17 '10 at 10:41

Guffa

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score 2 · Answer 2 · edited May 18 '13 at 17:18

2

byte[] binDate = (byte[])row["Date"];

edited May 18 '13 at 17:18

Patrick D'Souza

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answered Apr 17 '10 at 11:03

Sandeep Sachan

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score 0 · Answer 3 · answered Apr 17 '10 at 10:40

0

If "Date" is a blob, it should already come out as a byte[] - not sure why you are calling ToString(), but Byte.Parse will only parse a single byte.

answered Apr 17 '10 at 10:40

Marc Gravell

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Converting to Byte Array after reading a BLOB from SQL in C#

3 Answers3

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