I have a wpf application that accesses data within a SQL Server CE database. The application and database are meant to be run on a PC without installation, however attempting to do so fails. (failure to locate db provider) I've taken the following steps:
System.Data.SqlServerCE
-> copy localadded following to app.config
<system.data>
<DbProviderFactories>
<remove invariant="System.Data.SqlServerCe.4.0" />
<add name="Microsoft SQL Server Compact Data Provider 4.0"
invariant="System.Data.SqlServerCe.4.0"
description=".NET Framework Data Provider for Microsoft SQL Server Compact"
type="System.Data.SqlServerCe.SqlCeProviderFactory, System.Data.SqlServerCe, Version=4.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" />
</DbProviderFactories>
</system.data>
On attempted execution of the following code:
try
{
MessageBox.Show("initialize db connection");
context = new DataAccess.PersistentStorageEntities();
MessageBox.Show(context.Database.Connection.ConnectionString);
}
catch (Exception ex)
{
MessageBox.Show("exception: "+ex.Message);
if (ex.InnerException != null)
{
MessageBox.Show("innerexception: "+ ex.InnerException.Message);
}
}
I get the message:
exception: is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)
I suspect it's having trouble loading the System.Data.SqlServerCe.4.0
, but can't figure out why it would be trying to load as Win32
Any thoughts? I feel like I'm losing my mind here
1: You must use the System.Data.SqlServerCe dll from the Private folder (and the System.Data.SqlServerCe.Entity.dll dll from the same folder).
2: You must add x86 and AMD64 folders to your project, and include the required files (including the private VC++ runtime folder) in each (like in the Private folder). Make sure to include all files as content
3: You must change the config reference to version 4.0.0.1
See my blog for more detailed info: "Using SQL Server Compact 4.0 with Desktop Private Deployment and a Setup project (MSI) (part 2)"
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