Cannot resolve SQL Server CE factory provider by invariant name
This line of code
DbProviderFactory factory = DbProviderFactories.GetFactory("Microsoft.SqlServerCe.Client");
throws this exception
System.Configuration.ConfigurationErrorsException: Could not find or load a registered .Net Framework Data Provider.
Although my machine.config file contains the following section
<system.data>
<DbProviderFactories>
<add name="OracleClient Data Provider" invariant="System.Data.OracleClient" description=".Net Framework Data Provider for Oracle" type="System.Data.OracleClient.OracleClientFactory, System.Data.OracleClient, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<add name="SqlClient Data Provider" invariant="System.Data.SqlClient" description=".Net Framework Data Provider for SqlServer" type="System.Data.SqlClient.SqlClientFactory, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<add name="SQL Server CE Data Provider" invariant="Microsoft.SqlServerCe.Client" description=".NET Framework Data Provider for Microsoft SQL Server 2005 Compact Edition" type="Microsoft.SqlServerCe.Client.SqlCeClientFactory, Microsoft.SqlServerCe.Client, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" />
</DbProviderFactories>
</system.data>
Am I missing something? Should I be looking elsewhere? The type code DbProviderFactory factory = SqlCeProviderFactory.Instance
works fine.
source to share
There are several SQL Server CE installs . Visual Studio Tools provides server-side explorer and development components and places the SQL Server CE DLLs in a local Visual Studio location. I needed to set the runtime to get the data provider registered in the machine.config file.
source to share
In Visual Studio 2012, the default ProviderName is System.Data.SqlServerCe.4.0
.
This allows me to find a factory by name:
String providerName = "System.Data.SqlServerCe.4.0";
DbProviderFactory factory = DbProviderFactories.GetFactory(providerName);
if (factory == null)
throw new Exception("Unable to locate factory for " + providerName);
DbConnection conn = factory.CreateConnection();
conn.ConnectionString = connectionString;
conn.Open();
Note . Any code released on the public domain. No attribution required.
source to share