MongoDB的官方C#驱动可以通过这个链接得到。链接提供了.msi和.zip两种方式获取驱动dll文件。C#驱动的基本数据库连接，增删改查操作。在使用C#驱动的时候，要在工程中添加"MongoDB.Bson.dll"和"MongoDB.Driver.dll"的引用。同时要在代码中加入下面两个using语句。
using MongoDB.Bson.Serialization.Conventions;
using MongoDB.Driver;
using MongoDB.Driver.Linq;
using System.Text;注册常用约定
public static void RigisterConventions(){var pack = new ConventionPack();//元素名称序列化成驼峰形式pack.Add(new CamelCaseElementNameConvention());ConventionRegistry.Register("MyConventions", pack, x => true);}初始化Mongo帮助类
/// <summary>/// 初始化Mongo帮助类/// </summary>/// <param name="connectionString">连接字符串</param>/// <param name="dbName">数据库名</param>public MongoHelper(string connectionString, string dbName){_client = new MongoClient(connectionString);_database = _client.GetDatabase(dbName);}获取集合
/// <summary>/// 获取集合/// </summary>/// <typeparam name="T">集合类型</typeparam>/// <param name="collectionName">集合名</param>/// <returns></returns>public IMongoCollection<T> GetCollection<T>(string collectionName){return _database.GetCollection<T>(collectionName);}完整
/// <summary>/// MongoDB访问帮助类/// </summary>public class MongoHelper{private MongoClient _client;private IMongoDatabase _database;/// <summary>/// 注册常用约定/// </summary>public static void RigisterConventions(){var pack = new ConventionPack();//元素名称序列化成驼峰形式pack.Add(new CamelCaseElementNameConvention());ConventionRegistry.Register("MyConventions", pack, x => true);}/// <summary>/// 初始化Mongo帮助类/// </summary>/// <param name="connectionString">连接字符串</param>/// <param name="dbName">数据库名</param>public MongoHelper(string connectionString, string dbName){_client = new MongoClient(connectionString);_database = _client.GetDatabase(dbName);}/// <summary>/// 数据库/// </summary>public IMongoDatabase Db => _database;/// <summary>/// 获取集合/// </summary>/// <typeparam name="T">集合类型</typeparam>/// <param name="collectionName">集合名</param>/// <returns></returns>public IMongoCollection<T> GetCollection<T>(string collectionName){return _database.GetCollection<T>(collectionName);}/// <summary>/// 获取Queryable对象/// </summary>/// <typeparam name="T">对象类型</typeparam>/// <param name="collectionName">集合名</param>/// <returns></returns>public IMongoQueryable<T> GetQueryable<T>(string collectionName){return GetCollection<T>(collectionName).AsQueryable();}/// <summary>/// 模糊查询转换特殊字符：正则表达式有以下特殊字符。需要转义 * . ? + $ ^ [ ] ( ) { } | \ //// 如：{"phone":/U9G\/XoDNo8ozbwbxal\+Qzg==/}/// </summary>/// <param name="str"></param>/// <returns></returns>public static string ChangeSpecialCharacter(string str){if (string.IsNullOrEmpty(str))return str;StringBuilder retValue = new StringBuilder();string str1 = "*.?+$^[](){}|\\/";for (int i = 0; i < str.Length; i++){string ss = str[i].ToString();if (str1.Contains(ss)){ss = "\\" + ss;}retValue.Append(ss);}return retValue.ToString();}
