Godaddy上IIS7 ASP.net 2.0 Mysql数据库存在的问题

大多数涉及到Mysql操作的页面均抛出以下异常：

Server Error in '/' Application.

Security Exception

Description: The application attempted to perform an operation not
allowed by the security policy.  To grant this application the
required permission please contact your system administrator or change
the application's trust level in the configuration file.

Exception Details: System.Security.SecurityException: Request for the
permission of type 'System.Security.Permissions.SecurityPermission,
mscorlib, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089' failed.

Source Error:


[No relevant source lines]

Source File: App_Web_bbkojzme.6.cs    Line: 0

Stack Trace:


[SecurityException: Request for the permission of type
'System.Security.Permissions.SecurityPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
failed.]
  System.Reflection.MethodBase.PerformSecurityCheck(Object obj,
RuntimeMethodHandle method, IntPtr parent, UInt32 invocationFlags) +0
  System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags
invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
+470
  System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr,
Binder binder, Object[] args, CultureInfo culture, Object[]
activationAttributes) +1051
  System.Activator.CreateInstance(Type type, BindingFlags
bindingAttr, Binder binder, Object[] args, CultureInfo culture,
Object[] activationAttributes) +111
  System.Resources.ResourceManager.CreateResourceSet(Stream store,
Assembly assembly) +357
  System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo
culture, Boolean createIfNotExists, Boolean tryParents) +471
  System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo
culture, Boolean createIfNotExists, Boolean tryParents) +583
  System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo
culture, Boolean createIfNotExists, Boolean tryParents) +583
  System.Resources.ResourceManager.GetString(String name, CultureInfo
culture) +74
  MySql.Data.MySqlClient.Resources.get_PerfMonCategoryName() +40
  MySql.Data.MySqlClient.PerformanceMonitor..ctor(MySqlConnection
connection) +43
  MySql.Data.MySqlClient.MySqlConnection.Open() +434
  System.Data.Common.DbDataAdapter.QuietOpen(IDbConnection
connection, ConnectionState& originalState) +31
  System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset,
DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String
srcTable, IDbCommand command, CommandBehavior behavior) +112
  System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32
startRecord, Int32 maxRecords, String srcTable, IDbCommand command,
CommandBehavior behavior) +287
  System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +92
  System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments
arguments) +1297
  System.Web.UI.DataSourceView.Select(DataSourceSelectArguments
arguments, DataSourceViewSelectCallback callback) +19
  System.Web.UI.WebControls.DataBoundControl.PerformSelect() +142
  System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +73
  System.Web.UI.WebControls.GridView.DataBind() +4
  System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +82
  System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() +72
  System.Web.UI.Control.EnsureChildControls() +87
  System.Web.UI.Control.PreRenderRecursiveInternal() +44
  System.Web.UI.Control.PreRenderRecursiveInternal() +171
  System.Web.UI.Control.PreRenderRecursiveInternal() +171
  System.Web.UI.Control.PreRenderRecursiveInternal() +171
  System.Web.UI.Control.PreRenderRecursiveInternal() +171
  System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
+6785
  System.Web.UI.Page.ProcessRequest(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
+242
  System.Web.UI.Page.ProcessRequest() +80
  System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
  System.Web.UI.Page.ProcessRequest(HttpContext context) +49
  ASP.news_aspx.ProcessRequest(HttpContext context) in App_Web_bbkojzme.6.cs:0
  System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
+181
  System.Web.HttpApplication.ExecuteStep(IExecutionStep step,
Boolean& completedSynchronously) +75

Version Information: Microsoft .NET Framework Version:2.0.50727.4214;
ASP.NET Version:2.0.50727.4209

解决方法：

去http://dev.mysql.com/downloads/mirror.php?id=393503下载VS2008用mysql connector/net 6.0.7，在本机安装好之后，将安装目录下得MySql.Data.dll文件上传到godaddy服务器的bin目录下。

修改web.config文件：

<system.data> 
  <DbProviderFactories> 
    <clear/> 
    <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.0.7.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" /> 
  </DbProviderFactories> 
</system.data>

将web.config文件上传到godaddy服务器上。

参考了http://blog.csdn.net/Reasoncool/article/details/6226920。