查看“dapper”库以与数据库交互。对于代码，您可以这样做：

using Dapper;

string sql = "UPDATE table SET column = CONCAT(column, @s) WHERE id = @id";
using (var connection = new SqlConnection(yourConnectionString))
{
        try
        {
            connection.Execute(sql, new { @id = yourid, s = string });
        }
        catch (SqlException e)
        {
            Debug.WriteLine(e);
        }
}