sql-server-ce

问题 Background - If I am building a WPF desktop application (VS2010 & .NET 4) and would like a lightweight database to use but without having to have a separate installation. SQLite would be OK from what I read however I was thinking it would be good to stick with the Microsoft bits and try to use SQL Server CE. Question - Does SQL Server CE require an "installation" separate to my WPF application's installation? Or does it just require me to create the database (as I can) within VS2010 and

问题 In a web application we develop we generate SQL Server CE database files and for those we also generate passwords. The passwords are generated using System.Web.Security.Membership.GeneratePassword(). I assumed that GeneratePassword generated suitable password strings since it uses letters, digits and symbols. On http://msdn.microsoft.com/en-us/library/aa257373(v=sql.80).aspx I find a vague statement that SQL Server CE passwords "Can contain letters, symbols, digits, or a combination." But

问题 I've got an older database, developed in VS2010, which I would like to move to SQL Azure. I was hoping I could just upload the .sdf file to SQL Azure, but couldn't find a way to get that to work. I can't seem to open the .sdf file in Management Studio 2008 (I get "Incompatible Database Version"), so the easy option of generating a script is not available. Any quick and easy way to get this migration done? 回答1: Your best bet is using SQL Server Compact & SQLite Toolbox, it's a Visual Studio

问题 I am investigating moving a small and simple SQL Server database to SQL Server CE and am currently using a small prototype to investigate basic operations with SQL Server CE with the following operations in mind: (1) programmatically create a table, (2) insert new records, (3) read existing records, and (4) update existing records. The prototype is having a problem with updating existing records when using the Accessor and the bound members of the Accessor struct. The select statement works

问题 I am facing issue while trying to query SQLCE database in my Windows Phone Mango application. I get exception when I execute foreach (var item in myDataContext.MyTable.Select(item => item)) The column name is not valid. [ Node name (if any) = t0,Column name = version ] Strangely, when I execute query based on any individual column, it works fine foreach (var item in myDataContext.MyTable.Select(item => item.SomeColumn)) Any idea what could be wrong here? 回答1: I installed LINQ to SQL Debug

问题 I'm trying to seed my database with some test data with an IDatabaseIntialiser like this: protected override void Seed(BlogDataContext context) { // <snip> var post = context.Posts.Create(); post.Title = "My Life On Twitter"; // <snip properties> // Set tags post.Tags.Add(aspnetTag); // NullRefException post.Tags.Add(razorTag); Post entity looks like this: public class Post { // ... public virtual ICollection<Tag> Tags { get; set; } Full entities at Bitbucket: Post and Tag. All code is at

问题 I'm trying to learn about C# with SQL CE so that my program can remember stuff. I have created a database and can connect to it: SqlCeConnection conn = new SqlCeConnection(@"Data Source=|DataDirectory|\dbJournal.sdf"); conn.Open(); And it connects right, I guess cause if I rename the dbJournal.sdf to something wrong it doesn't debug right. Let's say I want to make a simple SELECT query. (SELECT * FROM tblJournal) How is that done? What about a simple insert? (INSERT TO tblJournal (column1,

问题 I have used SQLite.NET many times. It always worked fine but I have a friend that is really pestering me that I should use instead SQL Server Compact so I stayed fully in Microsoft environment. Now, I never worked with Compact, and he tells me it works fine for him, but seeing that .MDF extension gives me the creeps. No kidding. Last thing I want is my application relying on an Access database. Since I have never really worked with it, I am asking if someone here knows it to vouche for it,

问题 I have just installed Sql Server Compact Edition . To my surprise, we can't use stored procedure in sql server CE. Do I have any alternative of Stored Procedure in Sql Server CE. I am strongly obsessed with stored procedure, I can'nt think of an application without stored procedures. Please help, Thanks in advance. Edit: Can I use Managed Stored Procedures. 回答1: SqlCe is a local database for use by an application. There is no need for stored procedures since the database is just a local data

问题 I recently updated an app with LINQ to SQL and SQL Server CE 3.5 to Entity Framework 4.1 Code First and SQL Server CE 4.0, and it's now running noticeably slower. I did some before vs. after stopwatch testing, and most major operations of my app appear to be running about 40% slower on average. I'm using all default strategies and configurations for EF Code First except for disabling cascading deletes. When I originally posted this question, I was focused on one query that seemed to be taking