If the library is installed in the GAC, you must include the
in your connection string. This is a new requirement as of
The following list shows steps and code fragments needed to run a Connector/Net application in a partial trust environment. For illustration purposes, we use the Pipe Connections protocol in this example.
Install Connector/Net: version 6.6.1 or higher, or 6.5.4 or higher.
After installing the library, make the following configuration changes:
SecurityClasses section, add a
definition for the
class, including the version to use.
<configuration> <mscorlib> <security> <policy> <PolicyLevel version="1"> <SecurityClasses> .... <SecurityClass Name="MySqlClientPermission" Description="MySql.Data.MySqlClient.MySqlClientPermission, MySql.Data, Version=188.8.131.52, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
Scroll down to the
<PermissionSet class="NamedPermissionSet" version="1" Name="ASP.Net">
Add a new entry for the detailed configuration of the
<IPermission class="MySqlClientPermission" version="1" Unrestricted="true"/>
This configuration is the most generalized way that includes all keywords.
Configure the MySQL server to accept pipe connections, by
--enable-named-pipe option on
the command line. If you need more information about this,
see Installing MySQL on Microsoft Windows.
Confirm that the hosting provider has installed the
Connector/Net library (
in the GAC.
Optionally, the hosting provider can avoid granting
permissions globally by using the new
MySqlClientPermission class in the trust
policies. (The alternative is to globally enable the
Create a simple web application using Visual Studio 2010.
Add the reference in your application for the
web.config file so that your
application runs using a Medium trust level:
<system.web> <trust level="Medium"/> </system.web>
to your server-code page.
Define the connection string, in slightly different ways depending on the Connector/Net version.
Only for 6.6.4 or later: To
use the connections inside any web application that will run
in Medium trust, add the new
includesecurityasserts option to the
includesecurityasserts=true that makes
the library request the following permissions when required:
SecurityPermissions among others that are
not granted in Medium trust levels.
For Connector/Net 6.6.3 or earlier: No special setting for security is needed within the connection string.
MySqlConnectionStringBuilder myconnString = new MySqlConnectionStringBuilder("server=localhost;User Id=root;database=test;"); myconnString.PipeName = "MySQL55"; myconnString.ConnectionProtocol = MySqlConnectionProtocol.Pipe; // Following attribute is a new requirement when the library is in the GAC. // Could also be done by adding includesecurityasserts=true; to the string literal // in the constructor above. // Not needed with Connector/Net 6.6.3 and earlier. myconnString.IncludeSecurityAsserts = true;
MySqlConnection to use:
MySqlConnection myconn = new MySqlConnection(myconnString.ConnectionString); myconn.Open();
Retrieve some data from your tables:
MySqlCommand cmd = new MySqlCommand("Select * from products", myconn); MySqlDataAdapter da = new MySqlDataAdapter(cmd); DataSet1 tds = new DataSet1(); da.Fill(tds, tds.Tables.TableName); GridView1.DataSource = tds; GridView1.DataBind(); myconn.Close()
Run the program. It should execute successfully, without requiring any special code or encountering any security problems.