How to Execute an .SQL Script File Using C#?

Using C# to Execute SQL Script Files

This guide demonstrates how to execute an .SQL script file using C#. We'll utilize the Microsoft.SqlServer.Management.Smo assembly for this task.

Implementation

The following C# code provides a complete implementation:

using Microsoft.SqlServer.Management.Smo;
using Microsoft.SqlServer.Management.Common;
using System.IO;
using System.Data.SqlClient;

public class SqlScriptExecutor
{
    public static void Main(string[] args)
    {
        string connectionString = "Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=ccwebgrity;Data Source=SURAJIT\SQLEXPRESS";
        string scriptPath = @"E:\Project Docs\MX462-PD\MX756_ModMappings1.sql";

        try
        {
            // Connect to the SQL Server database.
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();

                // Create a Server object.
                Server server = new Server(new ServerConnection(connection));

                // Read the SQL script.
                string script = File.ReadAllText(scriptPath);

                // Execute the script.
                server.ConnectionContext.ExecuteNonQuery(script);
                Console.WriteLine("SQL script executed successfully.");
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error executing SQL script: {ex.Message}");
        }
    }
}

Code Explanation

1. Namespaces: The code imports necessary namespaces for SQL Server interaction and file I/O.
2. Connection String: A connection string is defined to specify the SQL Server instance and database. Remember to replace this with your actual connection string.
3. Script Path: The path to your .SQL script file is specified. Replace this with the correct path.
4. Connection and Server Object: A SqlConnection is created and opened, then a Server object is instantiated to represent the database server. The using statement ensures the connection is properly closed.
5. Script Reading: File.ReadAllText reads the entire SQL script into a string.
6. Script Execution: server.ConnectionContext.ExecuteNonQuery executes the SQL script. This method handles multiple SQL statements within the script file.
7. Error Handling: A try-catch block handles potential exceptions during script execution.

This method provides a robust way to execute SQL scripts from within your C# application, managing multiple statements and line breaks effectively. Remember to adjust the connection string and script path to match your environment.

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