Use overload with caution

Source: Internet
Author: User
1. The oldest, but also the safest way of writing. SqlParameter sp = new SqlParameter ("@ content", SqlDbType. Text );
Sp. Value = content;
Cmd. Parameters. Add (sp );
Cmd. ExecuteNonQuery ();

2. Be lazy but make a mistake. Cmd. Parameters. Add ("@ content", content );
Cmd. ExecuteNonQuery ();

For text. In fact, parameters are transmitted by vchar (8000. An error occurs when it is too large. Although your database is of the text type. But the program does not know it.

3. cmd. Parameters. Add (new SqlParameter ("@ content", SqlDbType. Text). Value = content );

I remember the foreign writing method I used to learn (I didn't know whether. net was a beta version yet. ^_^ 0 ). Compilation is fine. However, an error occurs during TMD running.

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