sql-server-ce-4

I currently working on a application that use Entity Framework 4.1 (code first) and SQL Server CE 4.0. One of the new things I really like from SQL Server CE 4.0 are the computed values. But I have some performance problem while importing old data into my new data store system (around 50000 entries). This is my second implementation for this. The first version used Entity Framework 4.0 and SQL Server CE 3.5. But there is a huge performance difference between these implementations. The code first implementation takes around one hour to import the entries, the other implementation only some

Self answering question for future reference: If you have a table where you deleted and re-added content, you can get this error while inserting new rows with an ID equal to existing IDs: Server Error in '/' Application. A duplicate value cannot be inserted into a unique index. [ Table name = Stories,Constraint name = PK__Stories__000000000000001C ] Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlServerCe

Problem Need to convert int to string using EF4 + SQL CE4. The recommended option of using SqlFunctions.StringConvert(double) still gives me errors. Option 1 (original). This gives me error: public static IEnumerable<SelectListItem> xxGetCustomerList() { using (DatabaseEntities db = new DatabaseEntities()) { var list = from l in db.Customers orderby l.CompanyName select new SelectListItem { Value = l.CustomerID.ToString(), Text = l.CompanyName }; return list.ToList(); } } Option 2 (most suggested). Then as many posts suggests, I used the SqlFunctions.StringConvert() function from the library

I want to connect to SQL Server Compact Edition 4.0 from an old asp-classic site but i always get the error: "Microsoft OLE DB Provider for ODBC Drivers error '80004005' [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified. " I tried sCon = "Data Source=c:\temp\sqlcompact.sdf;Encrypt Database=True;Password=testtest;Persist Security Info=False;" and Update: Error: Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done sCon = "Provider=Microsoft.SQLSERVER.CE.OLEDB.4.0;Data Source=c:\temp\sqlcompact

I just upgraded my host to MVC 3 but I'm trying to do a "hello world" using SQLCE 4.0 but I just got: Sorry, an error occurred while processing your request. I see my layout and everything but instead of data I see that. On localhost is working as expected I have: <add name="PruebaContext" connectionString="Data Source=|DataDirectory|db.sdf" providerName="System.Data.SqlServerCE.4.0"/> as connectionString. I put the sdf as part of the project, I added the System.Data.SqlServerCE.dll to the project with the local copy to true. I have no more ideas. The connString, the dll is in /bin and is

I have the following code (Database is SQL Server Compact 4.0): Dim competitor=context.Competitors.Find(id) When I profile this the Find method takes 300+ms to retrieve the competitor from a table of just 60 records. When I change the code to: Dim competitor=context.Competitors.SingleOrDefault(function(c) c.ID=id) Then the competitor is found in just 3 ms. The Competitor class: Public Class Competitor Implements IEquatable(Of Competitor) Public Sub New() CompetitionSubscriptions = New List(Of CompetitionSubscription) OpponentMeetings = New List(Of Meeting) GUID = GUID.NewGuid End Sub Public