Home/ Questions/Q 8464939
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-10T14:54:00+00:00

The following code gives an error during execution. string connectionString = Data Source=D:\\Base.sdf;Persist Security

  • 0

The following code gives an error during execution.

string connectionString = "Data Source=D:\\Base.sdf;Persist Security Info=False";
SqlConnection sqlConnection = new SqlConnection(connectionString)) 
sqlConnection.Open();

The error is:

A network-related or instance-specific error occured while establishing a connection to SQL Server. The server was not found or
was not accessible. Verify that the instance name is correct and that
SQL server is not configured to allow remote connections.
(provider:SQL network Interfaces, error: 26 – Error locating
Server/Instance Specified)

I tried SqlCeConnection instead of SqlConnection but, the compiler couldn’t find the library with that class.

Please, help to solve this problem.

  • The OS : Windows 7
  • Tool : Microsoft Visual Studio 2010
  • Language : C#
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Your database is a Sql Server compact edition one, you must use : 

    SqlCeConnection sqlConnection = new SqlCeConnection(connectionString);

    Download the libs from here Microsoft SQL Server Compact 4.0

    1. Add a reference to System.Data.SqlServerCe.dll to your project
    2. Add this using directive using System.Data.SqlServerCe;
    3. Use SqlCeConnection instead of SqlConnection
    • 0