建立与SQL Server的连接时出错

Question

I just started creating a local database in Visual Studio for the first time and I'm having a hard time making it work.

In modify connection I tested and it works and also got the connection string:

string ConnectionString = @"Data Source=D:\Bratulescu Mihai\WindowsFormsApplication1\WindowsFormsApplication1\NodeBDatabase.sdf";
        sqlConn = new SqlConnection(ConnectionString);

        sqlConn.Open();

But when it tries Open() it cannot connect. I don't know much about this whole server thing, I just created the db and it's DataSet.

Answer 1

If you are using SQLCe since I see you are reffering to an sdf file you should add a reference of System.Data.SqlServerCe and try:

using System.Data.SqlServerCe;
....
    sqlConn = new SqlCeConnection(ConnectionString);

            sqlConn.Open();

Answer 2

are you sure about the connection string? You could take a look at this site: http://www.connectionstrings.com/sql-server-compact/