Question

＆＃39;附近的语法不正确，＆＃39;应用程序设置为运行时出现异常。

在SQL Server Management Studio中查询运行正常。但是当应用程序设置为运行时，它会抛出异常。

存储过程：

SET ANSI_NULLS ON;
SET QUOTED_IDENTIFIER ON;
GO

ALTER PROCEDURE dbo.[ USP_GET_MONTH_WISE_PENDING_DETAILS]
    @MONTH INT = 4,
    @YEAR INT = 2017
AS
BEGIN
    SET NOCOUNT ON;

    SELECT  
        P.PbsName, PC.CauseName,
        dbo.F_CONVERT_ENG_NUMBER_TO_BNG(PCI.DayFrom) + N'/' + dbo.F_CONVERT_ENG_NUMBER_TO_BNG(PCI.MonthFrom) + N'/' +
                dbo.F_CONVERT_ENG_NUMBER_TO_BNG(PCI.YearFrom) + N'থেকে' + dbo.F_CONVERT_ENG_NUMBER_TO_BNG(PCI.DayTo) + N'/' +
                dbo.F_CONVERT_ENG_NUMBER_TO_BNG(PCI.MonthTo) + N'/' + dbo.F_CONVERT_ENG_NUMBER_TO_BNG(PCI.YearTo) 'Date',
        PCI.Remarks
    FROM    
        Pbs P
    INNER JOIN 
        ProbableConnectionInfo PCI ON PCI.PbsId = P.PbsId
    INNER JOIN 
        ConnectionPendingCause CPC ON PCI.Id = CPC.ProbableConnectionId
    INNER JOIN 
        PendingCause PC ON CPC.PendingCauseId = PC.Id
    WHERE   
        PCI.MONTH = @MONTH AND
        YEAR = @YEAR AND
        CPC.PendingNumber > 0;

    SELECT  
        dbo.F_CONVERT_ENG_NUMBER_TO_BNG(SUM(IC.Pending)) 'PendingApplication',
        dbo.F_CONVERT_ENG_NUMBER_TO_BNG(SUM(IC.loadNeed)) 'AppliedLoadAmount'
    FROM    
        IndustrialConnection IC
    INNER JOIN 
        ProbableConnectionInfo PCI ON IC.ProbableConnectionId = PCI.Id
    WHERE   
        PCI.MONTH = @MONTH AND YEAR = @YEAR
    GROUP BY 
        PCI.PbsId;

    SET NOCOUNT OFF;
END;

以下是问题出现的地方：

public static DataTable GetDataByStoredProcedure(string spName, List<SqlParameter> pars = null)
{
    sqlConnection.Open();

    var sqlCommand = new SqlCommand(spName, sqlConnection);
    sqlCommand.CommandType = CommandType.StoredProcedure;

    if (pars != null)
    {
        sqlCommand.Parameters.AddRange(pars.ToArray());
    }

    var dataReader = sqlCommand.ExecuteReader();
    var dt = new DataTable("Command");
    dt.Load(dataReader);

    //sqlConnection.Close();
    return dt;
}

以下是我使用该程序的地方：

public void ShowPendingIndustrialInfo(string exportType, int year, int month)
{
    List<SqlParameter> pars = new List<SqlParameter>();

    SqlParameter p1 = new SqlParameter("@month", SqlDbType.Int);
    p1.Value = month;

    SqlParameter p2 = new SqlParameter("@year", SqlDbType.Int);
    p2.Value = year;

    pars.Add(p1);
    pars.Add(p2);

    var data = SPService.GetDataByStoredProcedure("USP_GET_MONTH_WISE_PENDING_DETAILS",pars);
    ReportHelper.ShowReport(data, exportType, "rptPendingDetails.rpt");
}

Answer 1

当您构建SqlCommand以运行存储过程时，您需要将CommandType属性设置为CommandType.StoredProcedure，否则，此属性的默认值为Text，并且引擎会尝试解析您的命令名称，就好像是一个文字sql命令一样。当然，名称 month_wise_pending_details 不是有效的sql命令文本。

  var sqlCommand = new SqlCommand(spName, sqlConnection);
  sqlCommand.CommandType = CommandType.StoredProcedure;
  var dataReader = sqlCommand.ExecuteReader();

我还应该警告你代码中的问题。您有一个全局连接对象，并且在使用它之后不会将其丢弃。这是一种不好的做法，因为ADO.NET高效地实现Connection Pooling，无需保持这些对象始终打开

public class SPService
{
    private static string connectionString = ConfigurationManager.ConnectionStrings["Connection"].ConnectionString;

    public static DataTable GetDataByStoredProcedure(string spName)
    {
        using(SqlConnection sqlConnection = new SqlConnection(connectionString))
        using(SqlCommand sqlCommand = new SqlCommand(spName, sqlConnection))
        {
            sqlConnection.Open();
            sqlCommand.CommandType = CommandType.StoredProcedure;
            using(SqlDataReader dataReader = sqlCommand.ExecuteReader())
            {
                var dt = new DataTable("Command");
                dt.Load(dataReader);
                return dt;
             }
        }
    }
}

修改
如果要将参数传递给存储过程，则需要对代码进行一些更改：

该方法应该接收List<SqlParameter>作为第二个参数，此列表将添加到SqlCommand.Parameters集合

public static DataTable GetDataByStoredProcedure(string spName, List<SqlParameter> pars = null) { using(SqlConnection sqlConnection = new SqlConnection(connectionString)) using(SqlCommand sqlCommand = new SqlCommand(spName, sqlConnection)) { sqlConnection.Open(); sqlCommand.CommandType = CommandType.StoredProcedure; if(pars != null) sqlCommand.Parameters.AddRange(pars.ToArray()); using(SqlDataReader dataReader = sqlCommand.ExecuteReader()) { var dt = new DataTable("Command"); dt.Load(dataReader); return dt; } } }

调用代码更改为传递这些参数

public void ShowPendingIndustrialInfo(string exportType, int year, int month) { List<SqlParameter> pars = new List<SqlParameter>(); SqlParameter p1 = new SqlParameter("@month", SqlDbType.Int); p1.Value = month; SqlParameter p2 = new SqlParameter("@year", SqlDbType.Int); p2.Value = year; pars.Add(p1); pars.Add(p2); var data = SPService.GetDataByStoredProcedure("USP_GET_MONTH_WISE_PENDING_DETAILS", pars); ReportHelper.ShowReport(data, exportType, "rptPendingDetails.rpt"); }

最终编辑
关于错误未找到存储过程：如果仔细查看ALTER语句，您会注意到过程名称前面有一个空格。这也是在之前的所有修复之后仍然存在错误的原因

ALTER PROCEDURE dbo.[ USP_GET_MONTH_WISE_PENDING_DETAILS] ^

Answer 2

RU，

在代码中添加以下命令，通知c＃sqlcommand是一个存储过程。

sqlCommand.CommandType = CommandType.StoredProcedure;

IE：

namespace PBSM.DBGateway
{
public class SPService
{
    private static string connectionString = ConfigurationManager.ConnectionStrings["Connection"].ConnectionString;
    private static SqlConnection sqlConnection = new SqlConnection(connectionString);

    public static DataTable GetDataByStoredProcedure(string spName)
    {
        sqlConnection.Open();
        var sqlCommand = new SqlCommand(spName, sqlConnection);
        **sqlCommand.CommandType = CommandType.StoredProcedure;**
        var dataReader = sqlCommand.ExecuteReader();
        var dt = new DataTable("Command");
        dt.Load(dataReader);
        sqlConnection.Close();
        return dt;
    }
}

}

如果有帮助，请将我的回复标记为答案。问候。

为什么说$ exception {＆＃34;语法不正确＆＃39;，＆＃39;。＆＃34;} System.Exception {System.Data.SqlClient.SqlException}

2 个答案: