BeginTransaction return 空连接字符串

Question

我将 Dapper ORM 与工作单元一起使用
使用 IDbConnection/IDbTransaction 处理 (Close/Commit/Rollback)

public IDbTransaction BeginTransaction(string connectionName = "", bool useWadminUser =   false, IsolationLevel isolationLevel = IsolationLevel.ReadCommitted)
{
    using (DbConnection db = GetDbconnection(connectionName, useWadminUser))
    {
        db.Open();
        _dbTransaction = db.BeginTransaction();
    }
    return  this._dbTransaction;
}

DbConnection GetDbconnection(string connectionName = "", bool useWadminUser = false)
{
    UserInfoHelper userInfoHelper = _iSecurityAuthorizService.GetCookieProfileUser();
    return new SqlConnection(
        string.Format(_config.GetConnectionString(string.IsNullOrEmpty(connectionName) ? SqlHelper.DefaultConnection : connectionName),
            SqlHelper.WadminUserName, SqlHelper.WadminPassword));
}

我调用服务 var tran= _dapper.BeginTransaction(); 但 tran 为空。请看这个this pic1

Answer 1

public IDbTransaction BeginTransaction(string connectionName = "", bool useWadminUser =   false, IsolationLevel isolationLevel = IsolationLevel.ReadCommitted)
{
    using (DbConnection db = GetDbconnection(connectionName, useWadminUser))
    {
        db.Open();
        _dbTransaction = db.BeginTransaction();
    } <-- Here
    return  this._dbTransaction;
}

在上面的指针处，连接已关闭并已处理，事务处理也已关闭。你不能使用那样的交易。

BeginTransaction return 空连接字符串

BeginTransaction return null connectionstring

sql-server

ado.net

dapper