sql-server-ce

问题 Ok, when I create a sql server CE .sdf database in the new Webmatrix 3 I run into a problem. I've narrowed an example down to this. 1) I create a table called test. One column "test_ID" is a bigint, primarykey, and an identity. 2) I create another column called "test_desc" which is a nvarchar(50) with all the defaults. Problem. I cannot insert data using the GUI. Something about the column name cannot be modified. This is very annoying and somewhat disappointing for a new release to have such

问题 I wrote an little app in C# to keep track of customers and jobs but I get an error "There was an error parsing the query.[Token line number = 1, Token line offset = 38,Token in error = Name] I'm using a SQL Server CE .sdf database public static List<string> ListDates(string clientname) { List<string> date = new List<string>(); string myName = clientname; using (SqlCeCommand cmd = conn.CreateCommand()) { conn.Open(); cmd.CommandText = @"SELECT * FROM FarmJobs WHERE Name = ?Name;"; cmd

问题 It has long been true that you can execute multiple statements with SQL CE. And in fact I'm using SQL Server Compact Toolbox to do exactly that. But when I take the same multiple-statement commands and execute them from Dapper... public const string SampleDml = @" INSERT INTO [Plugin](Name, TypeName) VALUES ('Blog','Shroom.Blog'); GO INSERT INTO [ContentDef](PluginID, Name, Placement, IsStatic) VALUES(@@IDENTITY,'MyBlog','Layout:Left',1); GO "; I then keep getting this error: There was an

问题 I made an application that I put onto the hard disk of Win CE (the Compact Flash card). My problem is that the application is using the SQL Server CE 3.5 database but it looks like that the image is created with the SQL Server CE 3.0. I couldn't select the 3.5 version when I started to build the image. The 3.5 version dlls are deployed every time I debug the application so the problem never shows up in the development phase. Now when the application starts (it is started automatically when OS

问题 I was hoping that within the WebMatrix (C#.net) environment (using SQL Server Compact) that there was a way to search all tables and fields for a value. I have a bunch (like 100) of tables, connected to via WebMatrix and I am trying to look for a table that holds some information I need. I have been here: http://blogs.thesitedoctor.co.uk/tim/2007/11/02/How+To+Search+Every+Table+And+Field+In+A+SQL+Server+Database.aspx And here, on stackoverflow: search all tables, all columns for a specific

问题 I have an ASP.NET MVC project that uses a SQL Server Compact database. I have the following connection string for my FoobarContext : <add name="FoobarContext" connectionString="Data Source=|DataDirectory|Foobar.sdf" providerName="System.Data.SqlServerCe.4.0"/> I fired up the project and it appears to persist data as expected. However, I can't find a file named 'Foobar.sdf' anywhere. What am I missing? Update: It wasn't taking my connection string. Setting a breakpoint and inspecting the

问题 I am trying to make a database application. I added local database from add > new item > local database.sdf In Server Explorer, I created a table in the database. But I am having trouble connecting to it. I want to show all the data in a DataGrid. My code: string ConnectionString = @"Data Source=""c:\users\asus\documents\visual studio 2012\Projects\WpfApplicationLocalDB\WpfApplicationLocalDB\LocalDB.sdf"""; SqlConnection conn = new SqlConnection(ConnectionString); conn.Open(); SqlDataAdapter

问题 What does this actually mean? I am stepping through some code and when I look at the properties of my datareader under the locals window in vs2010, the DR.HasRows shows an error: HasRows '(DR).HasRows' threw an exception of type 'System.InvalidOperationException' bool {System.InvalidOperationException} base {"SQL Server Compact does not support calls to HasRows property if the underlying cursor is not scrollable."} System.SystemException {System.InvalidOperationException} WHat is a cursor and

问题 I have been developing a console application (C# / .Net Framework 4.0 / VS2012). I created a SQL Server Compact database ( *.sdf ) and added a connection string as: <connectionStrings> <add name="Dispatcher.Properties.Settings.FakeDataSetConnectionString" connectionString="Data Source=|DataDirectory|\FakeDataSet.sdf" providerName="Microsoft.SqlServerCe.Client.4.0" /> </connectionStrings> But When I'm trying to execute the following code: SqlConnection con = new SqlConnection(); con

问题 SqlCeConnection sqlCnn = new SqlCeConnection(Properties.Settings.Default.mainDBConnectionString); SqlCeCommand sqlCmd = new SqlCeCommand( "INSERT INTO desktopItems (Location,Label) VALUES (@Location, @Label)", sqlCnn); sqlCnn.Open(); sqlCmd.Parameters.Add("@Location", openExe.FileName.ToString()); sqlCmd.Parameters.Add("@Label", openExe.SafeFileName.ToString()); sqlCmd.ExecuteNonQuery(); sqlCnn.Close(); I have this code but when I run the program, the database is not updating ... 回答1: Usually