如何从C＃连接到SQL Server Ce数据库？

Question

How to Connect Sql Server CE Db to C# DotNet 4.0 I've Heard of System.Data.SqlServerCe NameSpace for Connecting local database but i am unable to find it in .Net 4.0

is there any alternate Class?

Answer 1

You need to have included the System.Data.SqlServerCe namespace

Its in the System.Data.SqlServerCe.dll

If that namespace doesn't show up then probably you haven't included refrence to that dll .

Add a reference to that dll and it should be available.

If you are still having problem then check out its in GAC . (On my system its here:
C:\\Windows\\Microsoft.NET\\assembly\\GAC_MSIL\\System.Data.SqlServerCe.Entity\\v4.0_4.0.0.0__89845dcd8080cc91

Some answers have already mentioned how to use it.

Answer 2

You need the System.Data.SqlServerCe namespace.

SqlCeConnection conn = new SqlCeConnection("Data Source=\\Mobile\\Northwind.sdf;");
conn.Open();
.
.
.
conn.Close();

From MSDN :

Namespace: System.Data.SqlServerCe

Assembly: System.Data.SqlServerCe (in system.data.sqlserverce.dll)

Answer 3

Open Package Manager Console in Visual Studio to install it from NuGet. Type: Install-Package SQLCE

Add using System.Data.SqlServerCe; to your class

And than use it like:

using (var connection = new SqlCeConnection("someConnectionString"))
{
    //do stuff
}

Answer 4

我认为你正在寻找System.Data.SqlServerCe 。

Answer 5

You can reference System.Data.SqlServerCe.dll from the .NET 2.0-3.5 GAC:

c:\\Windows\\assembly\\GAC_MSIL\\System.Data.SqlServerCe\\4.0.0.0__89845dcd8080cc91\\System.Data.SqlServerCe.dll

It is not in the .NET 4.0 GAC ( C:\\Windows\\assembly\\GAC_MSIL ) because it is available for all .NET frameworks since 2.0.

Answer 6

Thanks For Your Help guys. I found Reference Dll form C:\\Program Files\\Microsoft SQL Server Compact Edition\\v3.5\\Desktop