Provider=MSIDXS;Data source=MyCatalog;

Specifying the user locale

Specifies a unique 32-bit number (for example, 1033) that specifies preferences related to the user's language. These preferences indicate how dates and times are formatted, items are sorted alphabetically, strings are compared, and so on.

Provider=MSIDXS;Data source=MyCatalog;Locale Identifier=1033;

If this keyword is not specified, the default system locale identifier is used.

.NET Framework Data Provider for OLE DB

Use an OLE DB provider from .NET

Provider=any oledb provider's name;OledbKey1=someValue;OledbKey2=someValue;

See the respective OLEDB provider's connection strings options. The .net OleDbConnection will just pass on the connection string to the specified OLEDB provider. Read more here.

Index Server connection strings

OLE DB Provider for Index Server

Standard

Specifying the user locale

.NET Framework Data Provider for OLE DB

Use an OLE DB provider from .NET