.net 林克没有'；我不能给我正确的数据

以下SQL脚本从我的数据库返回2行：

SELECT ChaperoneID, Name 
FROM ChaperoneInfo 
WHERE ChaperoneID IN (SELECT ChaperoneID 
                      FROM ChaperoneMatches 
                      WHERE DriverID = '111')

以下LINQ代码为我提供了一个空列表：

...
private const string SQL_GET_CHAPERONES_NAME = "SELECT ChaperoneID, Name FROM ChaperoneInfo WHERE ChaperoneID IN (SELECT ChaperoneID FROM ChaperoneMatches WHERE DriverID = '{0}')";
    ....
public List<ChaperoneNames> GetChaperones(string driverID)
{
    List<ChaperoneNames> diList = new List<ChaperoneNames>();
    ISafeDataContext dc = new ISafeDataContext();

    try
    {
        string strSQL = SQL_GET_CHAPERONES_NAME;
        object[] objParameters = new object[] { driverID };
        diList = dc.ExecuteQuery<ChaperoneNames>(strSQL, objParameters).ToList();
    }
    catch (Exception ex)
    {
        EventLog.WriteEntry("iSafe", ex.StackTrace + "\n \n" + ex.Message);
    }

    return diList;
}

---

是否在

伴侣名称

字段的名称中出现了问题？

您的ExecuteQuery命令将尝试使用sql参数，这意味着您的行

private const string SQL_GET_CHAPERONES_NAME = "SELECT ChaperoneID, Name FROM ChaperoneInfo WHERE ChaperoneID IN (SELECT ChaperoneID FROM ChaperoneMatches WHERE DriverID = '{0}')";

将生成TSQL之类的产品吗

 DECLARE @p0 NVarChar(1000) = '111'
 SELECT ChaperoneID, Name FROM ChaperoneInfo WHERE ChaperoneID IN 
    (SELECT ChaperoneID FROM ChaperoneMatches WHERE DriverID = '@p0')"

你需要做的是删除引号，即

private const string SQL_GET_CHAPERONES_NAME = "SELECT ChaperoneID, Name FROM ChaperoneInfo WHERE ChaperoneID IN (SELECT ChaperoneID FROM ChaperoneMatches WHERE DriverID = {0})";

因此，您的查询类似于

 DECLARE @p0 NVarChar(1000) = '111'
 SELECT ChaperoneID, Name FROM ChaperoneInfo WHERE ChaperoneID IN 
    (SELECT ChaperoneID FROM ChaperoneMatches WHERE DriverID = @p0)"

---

不完全确定，但我认为这是SQL\u GET\u CHAPERONES\u NAME语句中围绕参数的“”。AFAIK这是针对字符串数据类型自动完成的。您是否使用值“111”调用GetChaperones？是的，ChaperoneID是nvarchar（50），因此“111”是一个有效值。同样，作为一个简单的SQL语句，我得到了一个有效的响应。LIQ太广泛，以至于不能把它分解成“不提供正确的数据”。您的代码是否引发异常？什么是ISafeDataContext？如果使用普通数据读取器，查询是否返回任何行？这是否算作LINQ？

 DECLARE @p0 NVarChar(1000) = '111'
 SELECT ChaperoneID, Name FROM ChaperoneInfo WHERE ChaperoneID IN 
    (SELECT ChaperoneID FROM ChaperoneMatches WHERE DriverID = @p0)"