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具体实现方法如下：

public string GenerateExamePaper(string paperType, string driverID, string MacAddr)

{

int i;

IDataParameter[] iData = new SqlParameter[4];

iData[0] = new SqlParameter("@paperType", paperType);

iData[1] = new SqlParameter("@driverID", driverID);

iData[2] = new SqlParameter("@MacAddr", MacAddr);

iData[3] = new SqlParameter("@sReturn", SqlDbType.Char, 50, ParameterDirection.Output, false, 0, 0, string.Empty, DataRowVersion.Default,null);

string aaa = "";

i= DbHelperSQL.RunProcedureParOut("Pro_GenerateExamePaper", iData, out aaa).ToString();

return aaa;

}

/// <summary>

/// 执行存储过程，返回影响的行数

/// </summary>

/// <param name="storedProcName">存储过程名</param>

/// <param name="parameters">存储过程参数</param>

/// <param name="rowsAffected">影响的行数</param>

/// <param name="rowsAffected">返回output值</param>

/// <returns></returns>

public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected,out str)

{

using (SqlConnection connection = new SqlConnection(connectionString))

{

int result;

connection.Open();

SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);

rowsAffected = command.ExecuteNonQuery();

result = (int)command.Parameters["ReturnValue"].Value;

str= (int)command.Parameters["@sReturn"].Value;

return result;

}

}

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