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POInsert unicode text in MySql4 throught ASP.NET
 

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  1. POInsert unicode text in MySql4 throught ASP.NET
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    <p>I'm writing a new website for an institute which has 4000 users that are stored in MySql4 !</p> <p>I'm using mysql-connector/net to connect to MySql database throught asp.net,</p> <p>Everything is OK, EXCEPT updating the info which are in unicode mode !</p> <p>Unfortunately I don't know lot about unicode !</p> <p>Connecting and reading data from MySql database is like this :</p> <pre><code>using MySql.Data.MySqlClient; ... MySqlConnection con; MySqlCommand cmd; string tempstr = "Database=DB-NAME;Data Source=SOURCE;charset=utf8;User Id=USER;Password=PASS"; con = new MySqlConnection(tempstr); con.Open(); cmd = con.CreateCommand(); cmd.CommandText = "select * from list_membership"; cmd.CommandType = CommandType.Text; MySqlDataReader reader = cmd.ExecuteReader(); reader.Read(); </code></pre> <p>Now when I read an address for example I get sth like this: <strong>زÙجاÙ</strong></p> <p>Fortunately I've solved it using the function blew:</p> <pre><code>public string DecodeFromUtf8(string utf8String) { // copy the string as UTF-8 bytes. byte[] utf8Bytes = new byte[utf8String.Length]; for (int i = 0; i &lt; utf8String.Length; ++i) { //Debug.Assert( 0 &lt;= utf8String[i] &amp;&amp; utf8String[i] &lt;= 255, "the char must be in byte's range"); utf8Bytes[i] = (byte)utf8String[i]; } return Encoding.UTF8.GetString(utf8Bytes, 0, utf8Bytes.Length); } </code></pre> <p>Now I send the junky string to the function and I get correct form like this : زنجان (persian language)</p> <p>The problem is that when I want to update or insert address field for instance, nothing will store in the database except some question marks like this: <strong>???? ?????</strong></p> <p>Anyone know what should I do ?! Is there any reverse form for DecodeFromUtf8 function ?</p> <p>Excuse my bad english, Thanks.</p>
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    1. USuser1422847
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    1. COMySQL 4 has practically no support for character encodings, can't you upgrade?
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      1. USJoni
    2. COOops ! But the previous website was written in PHP, and it stores and reads these strings without any decoding or anything else ! I think PHP and MySql 4 is compatible with these unicode strings, But ASP.NET is not ! (or mysql/connector/net is not !)
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      1. POInsert unicode text in MySql4 throught ASP.NET
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    3. COPHP is as ignorant of character encodings and Unicode as MySQL 4; in both strings are arbitrary sequences of bytes, and bringing in a component that is Unicode aware like .Net or Java is problematic.
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      1. USJoni
 

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