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  • Convert the code into lambda/LINQ(C#3.0)

    - by Newbie
    How to convert the below code into lambda if (ds != null && ds.Tables.Count > 0) { dtAsset = ds.Tables["AssetData"]; dtCharecteristics = ds.Tables["CharacteristicsData"]; for (int i = 0; i < dtAsset.Rows.Count; i++) { for (int j = 0; j < dtCharecteristics.Rows.Count; j++) { if (dtAsset.Rows[i]["AssetId"].Equals(dtCharecteristics.Rows[j]["AssetId"])) { objAttributesCollection.Add(new Attributes { AttributeCode = Convert.ToString(dtCharecteristics.Rows[j]["AttributeCode"]), TimeSeriesData = fn(Convert.ToDateTime(dtCharecteristics.Rows[j]["StartDate"]), Convert.ToString(dtCharecteristics.Rows[j]["Value"])) }); } } objAssetCollection.Add(new Asset { AssetId = Convert.ToInt32(dtAsset.Rows[i]["AssetId"]), AssetType = Convert.ToString(dtAsset.Rows[i]["AssetCode"]), AttributeCollection = objAttributesCollection }); objAttributesCollection = new List<Attributes>(); } } I am using C#3.0 There is nothing wrong in the code but for the sake of learning I want to do this. Thanks

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  • Anyone saw a worst written function than this? [closed]

    - by fvoncina
    string sUrl = "http://www.ipinfodb.com/ip_query.php?ip=" + ip + "&output=xml"; StringBuilder oBuilder = new StringBuilder(); StringWriter oStringWriter = new StringWriter(oBuilder); XmlTextReader oXmlReader = new XmlTextReader(sUrl); XmlTextWriter oXmlWriter = new XmlTextWriter(oStringWriter); while (oXmlReader.Read()) { oXmlWriter.WriteNode(oXmlReader, true); } oXmlReader.Close(); oXmlWriter.Close(); // richTextBox1.Text = oBuilder.ToString(); XmlDocument doc = new XmlDocument(); doc.LoadXml(oBuilder.ToString()); doc.Save(System.Web.HttpContext.Current.Server.MapPath(".") + "data.xml"); DataSet ds = new DataSet(); ds.ReadXml(System.Web.HttpContext.Current.Server.MapPath(".") + "data.xml"); string strcountry = "India"; if (ds.Tables[0].Rows.Count > 0) { strcountry = ds.Tables[0].Rows[0]["CountryName"].ToString(); }

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  • "[INS-30131] Initial setup required for the execution of installer validations failed." Encountering this error while installing Oracle database 12c. [on hold]

    - by user132992
    I am trying to install Oracle 12c database on my machine running Fedora 20. And I am encountering this problem: "[INS-30131] Initial setup required for the execution of installer validations failed." And when we see the details then it is like this: Cause - Failed to access the temporary location. Action - Ensure that the current user has required permissions to access the temporary location. Additional Information: - Framework setup check failed on all the nodes - Cause: Cause Of Problem Not Available   - Action: User Action Not Available Summary of the failed nodes fedora - Version of exectask could not be retrieved from node "fedora"   - Cause: Cause Of Problem Not Available   - Action: User Action Not Available To eliminate this error I have tried various measures including the change of permission of the tmp folder and restarting the computer but none is working. Plz someone help me out of this. Any kind of help will be appreciated...

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  • How is ~/bin added to my path?

    - by Hari Sundararajan
    I have not added ~/bin to any of my .bash* files. However, $PATH does list that directory. The reason I am asking this in the Ubuntu specific StackExchange is because, well, I have exactly the same .bashrc, .bash_profile and .bash_aliases in both Fedora and Ubuntu machines (in fact, I have them on Dropbox and symlinked in ~) and in my Fedora machines, ~/bin is not added. In other words, if I add ~/bin to my path by making an entry in .bashrc, it shows up once on Fedora and twice on Ubuntu. Where is ~/bin being added to my path?

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  • Can't boot from liveUSB when trying to install it alongside Windows 7

    - by ali
    I'm very noob at Linux and installing techniques. I want to install 12.04 from bootable usb flash alongside Windows 7 (also tried live CD but not working) but computer is not booting from USB flash or LIVE-CD and boots windows 7 (Acer Aspire 4750g) and of course I have set the BIOS priority in the right way. There is one important point to tell that I have installed Fedora 16 on my laptop successfully and now I have it on my system. When I was trying to install Fedora I got some error and searched about it and got this point that I should delete a .efi file and then installation went right. In this case , what should I do to solve the problem? (I also don't need my Fedora anymore).

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  • computer doesn't boot from usb ubuntu installer when trying to install it alongside windows 7

    - by ali
    I'm very noob at linux and installing techniques. I want to install ubuntu 12.04 from bootable usb flash alongside windows 7 ( also tried live CD but now working ) but computer is not booting from usb flash or LIVE-CD and boots windows 7 ( acer aspire 4750g ). and of course I have set the bios priority in the right way. There is one important point to tell that I have installed Fedora 16 on my laptop successfully and now I have it on my system. when I was trying to install fedora i got some error and searched about it and got this point that I should delete a .efi file and then installation went right. In this case , what should I do to solve the problem? ( I also don't need my Fedora anymore )

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  • Unable to run VMs on hyper-v

    - by PRAWAT-DS
    Folks/Mates, I need some advise and assistance regarding the testing of Hyper-V. Here is my h/ware configuration: 1) Intel i5 processor (i5-750) 2) Intel M/B DP55WB 3) 6 GB DDR3 RAM OS = Server 2008 R2 Standart (evaluation copy). I installed 2008 r2 on my machine and added hyper-v role to it. I created 2 VMs and installed OS. But after finishing the OS installation the VMs are not booting up. After finishing the OS installation, the VM reboots automatically (normal behaviour) and shows "preparing your system for first time" after that it reboots and didn't come online. Few things to notice, when I am running "securable" on my server 2008 R2 OS it shows that processor is not supporting h/ware virtulization, but (since my desktop is dual boot) when I am running "securable" on my windows 7 OS, it shows that process "does" supports hardware virtulization. VT option is already enabled in BIOS. Any help and suggestions are highly appreciated :) Thanks in advance. Pradeep Rawat

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  • Website cannot be accessed with google DNS because of unsigned DNS

    - by Sinan Samet
    I get this error: Inconsistent security for stakeholdergame.com - DS found at parent, but no DNSKEY found at child. On http://dnscheck.pingdom.com/?domain=stakeholdergame.com People can't access my site with google public DNS because of this. How do I solve this problem? dig @ns1.haveabyte.nl stakeholdergame.com DS shows me this ; <<>> DiG 9.8.3-P1 <<>> @ns1.haveabyte.nl stakeholdergame.com DS ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42223 ;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;stakeholdergame.com. IN DS ;; AUTHORITY SECTION: stakeholdergame.com. 14400 IN SOA ns1.haveabyte.nl. hostmaster.stakeholdergame.com. 2014030300 14400 3600 1209600 86400 ;; Query time: 21 msec ;; SERVER: 79.170.93.174#53(79.170.93.174) ;; WHEN: Tue Jun 10 11:20:41 2014 ;; MSG SIZE rcvd: 100

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  • .Net to Oracle Connectivity using ODBC .NET

    - by SAMIR BHOGAYTA
    You can use the new ODBC .NET Data Provider that works with the ODBC Oracle7.x driver or higher. You need to have MDAC 2.6 or later installed and then download ODBC .NET from the MS Web Site http://msdn.microsoft.com/downloads/default.asp?url=/code/sample.asp?url=/msdn-files/027/001/668/msdncompositedoc.xml&frame=true. MDAC (Microsoft Data Access Component) 2.7 contains core component, including the Microsoft SQL server and Oracle OLE Database provider and ODBC driver. Insta ...You can use the new ODBC .NET Data Provider that works with the ODBC Oracle7.x driver or higher. You need to have MDAC 2.6 or later installed and then download ODBC .NET from the MS Web Site http://msdn.microsoft.com/downloads/default.asp?url=/code/sample.asp?url=/msdn-files/027/001/668/msdncompositedoc.xml&frame=true. MDAC (Microsoft Data Access Component) 2.7 contains core component, including the Microsoft SQL server and Oracle OLE Database provider and ODBC driver. Install ODBC .NET from the MS Web Site http://msdn.microsoft.com/downloads/default.asp?URL=/downloads/sample.asp?url=/msdn-files/027/001/943/msdncompositedoc.xml Create a DSN, using either Microsoft ODBC for Oracle or Oracle supplied Driver if the Oracle client software is loaded. here for eq. TrailDSN. While creating DSN give user name along with passward for eq. scott/tiger. using Microsoft .Data.Odbc; private void Form1_Load(object sender, System.EventArgs e) { try { OdbcConnection myconnection= new OdbcConnection ("DSN=TrialDSN"); OdbcDataAdapter myda = new OdbcDataAdapter ("Select * from EMP", myconnection); DataSet ds= new DataSet (); myda.Fill(ds, "Table"); dataGrid1.DataSource = ds ; } catch(Exception ex) { MessageBox.Show (ex.Message ); } }

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  • Dynamic group membership to work around no nested security group support for Active Directory

    - by Bernie White
    My problem is that I have a number of network administration applications like SAN switches that do not support nested groups from Active Directory Domain Services (AD DS). These legacy administration applications use either LDAP or LDAPS. I am fairly sure I can use Active Directory Lightweight Directory Services (AD LDS) and possibly Windows Authorization Manager to work around this issue; however I am not really sure where to start. I want to end up with: A single group that can be queried over LDAP/LDAPS for all it’s direct members LDAP proxy for user name and password credentials to AD DS Easy way to admin the group, ideally the group would aggregate the nested membership in AD DS. a native solution using freely available components from the Windows stack. If you have any suggestions or solutions that you have previously used to solve this issue please let me know.

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  • ubuntu get stuck on boot

    - by john
    it seems that i cant install any OS on my system, ubuntu, mint, fedora or mac os x except windows, it just stuck on ubuntu logo, or a little bit later and the same thing heppend to fedora and mint, and i tried to install this on my laptop and it worked, so the disc isnt the problem. and i tried to change to AHCI instead of IDE as suggested to me before but still no success. thank you very much for your help!! asus p6t deluxe i7 940 580 gtx 12G

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  • Ubuntu application keeps disappearing

    - by Ibrahim
    This issue is something entirely different and perhaps one of the reason I switched from Fedora to Ubuntu 6 months back when 12.04 was launched. While applications like thunderbird or Firefox is running, it simply keeps disappearing without popping up any error. It was just exactly the same thing happened in fedora only when i UPGRADED to the latest version from earlier one and the same thing I guess is haunting me in Ubuntu only after upgrading i

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  • How optimize code with introspection + heavy alloc on iPhone

    - by mamcx
    I have a problem. I try to display a UITable that could have 2000-20000 records (typicall numbers.) I have a SQLite database similar to the Apple contacts application. I do all the tricks I know to get a smoth scroll, but I have a problem. I load the data in 50 recods blocks. Then, when the user scroll, request next 50 until finish the list. However, load that 50 records cause a notable "pause" in loading and scrolling. Everything else works fine. I cache the data, have opaque cells, draw it by code, etc... I swap the code loading the same data in dicts and have a performance boost but wonder if I could keep my object oriented aproach and improve the actual code. This is the code I think have the performance problem: -(NSArray *) loadAndFill: (NSString *)sql theClass: (Class)cls { [self openDb]; NSMutableArray *list = [NSMutableArray array]; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; DbObject *ds; Class myClass = NSClassFromString([DbObject getTableName:cls]); FMResultSet *rs = [self load:sql]; while ([rs next]) { ds = [[myClass alloc] init]; NSDictionary *props = [ds properties]; NSString *fieldType = nil; id fieldValue; for (NSString *fieldName in [props allKeys]) { fieldType = [props objectForKey: fieldName]; fieldValue = [self ValueForField:rs Name:fieldName Type:fieldType]; [ds setValue:fieldValue forKey:fieldName]; } [list addObject :ds]; [ds release]; } [rs close]; [pool drain]; return list; } And I think the main culprit is: -(id) ValueForField: (FMResultSet *)rs Name:(NSString *)fieldName Type:(NSString *)fieldType { id fieldValue = nil; if ([fieldType isEqualToString:@"i"] || // int [fieldType isEqualToString:@"I"] || // unsigned int [fieldType isEqualToString:@"s"] || // short [fieldType isEqualToString:@"S"] || // unsigned short [fieldType isEqualToString:@"f"] || // float [fieldType isEqualToString:@"d"] ) // double { fieldValue = [NSNumber numberWithInt: [rs longForColumn:fieldName]]; } else if ([fieldType isEqualToString:@"B"]) // bool or _Bool { fieldValue = [NSNumber numberWithBool: [rs boolForColumn:fieldName]]; } else if ([fieldType isEqualToString:@"l"] || // long [fieldType isEqualToString:@"L"] || // usigned long [fieldType isEqualToString:@"q"] || // long long [fieldType isEqualToString:@"Q"] ) // unsigned long long { fieldValue = [NSNumber numberWithLong: [rs longForColumn:fieldName]]; } else if ([fieldType isEqualToString:@"c"] || // char [fieldType isEqualToString:@"C"] ) // unsigned char { fieldValue = [rs stringForColumn:fieldName]; //Is really a boolean? if ([fieldValue isEqualToString:@"0"] || [fieldValue isEqualToString:@"1"]) { fieldValue = [NSNumber numberWithInt: [fieldValue intValue]]; } } else if ([fieldType hasPrefix:@"@"] ) // Object { NSString *className = [fieldType substringWithRange:NSMakeRange(2, [fieldType length]-3)]; if ([className isEqualToString:@"NSString"]) { fieldValue = [rs stringForColumn:fieldName]; } else if ([className isEqualToString:@"NSDate"]) { NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss"]; NSString *theDate = [rs stringForColumn:fieldName]; if (theDate) { fieldValue = [dateFormatter dateFromString: theDate]; } else { fieldValue = nil; } [dateFormatter release]; } else if ([className isEqualToString:@"NSInteger"]) { fieldValue = [NSNumber numberWithInt: [rs intForColumn :fieldName]]; } else if ([className isEqualToString:@"NSDecimalNumber"]) { fieldValue = [rs stringForColumn :fieldName]; if (fieldValue) { fieldValue = [NSDecimalNumber decimalNumberWithString:[rs stringForColumn :fieldName]]; } } else if ([className isEqualToString:@"NSNumber"]) { fieldValue = [NSNumber numberWithDouble: [rs doubleForColumn:fieldName]]; } else { //Is a relationship one-to-one? if (![fieldType hasPrefix:@"NS"]) { id rel = class_createInstance(NSClassFromString(className), sizeof(unsigned)); Class theClass = [rel class]; if ([rel isKindOfClass:[DbObject class]]) { fieldValue = [rel init]; //Load the record... NSInteger Id = [rs intForColumn:[theClass relationName]]; if (Id>0) { [fieldValue release]; Db *db = [Db currentDb]; fieldValue = [db loadById: theClass theId:Id]; } } } else { NSString *error = [NSString stringWithFormat:@"Err Can't get value for field %@ of type %@", fieldName, fieldType]; NSLog(error); NSException *e = [NSException exceptionWithName:@"DBError" reason:error userInfo:nil]; @throw e; } } } return fieldValue; }

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  • Need some help deciphering a line of assembler code, from .NET JITted code

    - by Lasse V. Karlsen
    In a C# constructor, that ends up with a call to this(...), the actual call gets translated to this: 0000003d call dword ptr ds:[199B88E8h] What is the DS register contents here? I know it's the data-segment, but is this call through a VMT-table or similar? I doubt it though, since this(...) wouldn't be a call to a virtual method, just another constructor. I ask because the value at that location seems to be bad in some way, if I hit F11, trace into (Visual Studio 2008), on that call-instruction, the program crashes with an access violation. The code is deep inside a 3rd party control library, where, though I have the source code, I don't have the assemblies compiled with enough debug information that I can trace it through C# code, only through the disassembler, and then I have to match that back to the actual code. The C# code in question is this: public AxisRangeData(AxisRange range) : this(range, range.Axis) { } Reflector shows me this IL code: .maxstack 8 L_0000: ldarg.0 L_0001: ldarg.1 L_0002: ldarg.1 L_0003: callvirt instance class DevExpress.XtraCharts.AxisBase DevExpress.XtraCharts.AxisRange::get_Axis() L_0008: call instance void DevExpress.XtraCharts.Native.AxisRangeData::.ctor(class DevExpress.XtraCharts.ChartElement, class DevExpress.XtraCharts.AxisBase) L_000d: ret It's that last call there, to the other constructor of the same class, that fails. The debugger never surfaces inside the other method, it just crashes. The disassembly for the method after JITting is this: 00000000 push ebp 00000001 mov ebp,esp 00000003 sub esp,14h 00000006 mov dword ptr [ebp-4],ecx 00000009 mov dword ptr [ebp-8],edx 0000000c cmp dword ptr ds:[18890E24h],0 00000013 je 0000001A 00000015 call 61843511 0000001a mov eax,dword ptr [ebp-4] 0000001d mov dword ptr [ebp-0Ch],eax 00000020 mov eax,dword ptr [ebp-8] 00000023 mov dword ptr [ebp-10h],eax 00000026 mov ecx,dword ptr [ebp-8] 00000029 cmp dword ptr [ecx],ecx 0000002b call dword ptr ds:[1889D0DCh] // range.Axis 00000031 mov dword ptr [ebp-14h],eax 00000034 push dword ptr [ebp-14h] 00000037 mov edx,dword ptr [ebp-10h] 0000003a mov ecx,dword ptr [ebp-0Ch] 0000003d call dword ptr ds:[199B88E8h] // this(range, range.Axis)? 00000043 nop 00000044 mov esp,ebp 00000046 pop ebp 00000047 ret Basically what I'm asking is this: What the purpose of the ds:[ADDR] indirection here? VMT-table is only for virtual isn't it? and this is constructor Could the constructor have yet to be JITted, which could mean that the call would actually call through a JIT shim? I'm afraid I'm in deep water here, so anything might and could help. Edit: Well, the problem just got worse, or better, or whatever. We are developing the .NET feature in a C# project in a Visual Studio 2008 solution, and debugging and developing through Visual Studio. However, in the end, this code will be loaded into a .NET runtime hosted by a Win32 Delphi application. In order to facilitate easy experimentation of such features, we can also configure the Visual Studio project/solution/debugger to copy the produced dll's to the Delphi app's directory, and then execute the Delphi app, through the Visual Studio debugger. Turns out, the problem goes away if I run the program outside of the debugger, but during debugging, it crops up, every time. Not sure that helps, but since the code isn't slated for production release for another 6 months or so, then it takes some of the pressure off of it for the test release that we have soon. I'll dive into the memory parts later, but probably not until over the weekend, and post a followup.

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  • Data adapter not filling my dataset

    - by Doug Ancil
    I have the following code: Imports System.Data.SqlClient Public Class Main Protected WithEvents DataGridView1 As DataGridView Dim instForm2 As New Exceptions Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles startpayrollButton.Click Dim ssql As String = "select MAX(payrolldate) AS [payrolldate], " & _ "dateadd(dd, ((datediff(dd, '17530107', MAX(payrolldate))/7)*7)+7, '17530107') AS [Sunday]" & _ "from dbo.payroll" & _ " where payrollran = 'no'" Dim oCmd As System.Data.SqlClient.SqlCommand Dim oDr As System.Data.SqlClient.SqlDataReader oCmd = New System.Data.SqlClient.SqlCommand Try With oCmd .Connection = New System.Data.SqlClient.SqlConnection("Initial Catalog=mdr;Data Source=xxxxx;uid=xxxxx;password=xxxxx") .Connection.Open() .CommandType = CommandType.Text .CommandText = ssql oDr = .ExecuteReader() End With If oDr.Read Then payperiodstartdate = oDr.GetDateTime(1) payperiodenddate = payperiodstartdate.AddSeconds(604799) Dim ButtonDialogResult As DialogResult ButtonDialogResult = MessageBox.Show(" The Next Payroll Start Date is: " & payperiodstartdate.ToString() & System.Environment.NewLine & " Through End Date: " & payperiodenddate.ToString()) If ButtonDialogResult = Windows.Forms.DialogResult.OK Then exceptionsButton.Enabled = True startpayrollButton.Enabled = False End If End If oDr.Close() oCmd.Connection.Close() Catch ex As Exception MessageBox.Show(ex.Message) oCmd.Connection.Close() End Try End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exceptionsButton.Click Dim connection As System.Data.SqlClient.SqlConnection Dim adapter As System.Data.SqlClient.SqlDataAdapter = New System.Data.SqlClient.SqlDataAdapter Dim connectionString As String = "Initial Catalog=mdr;Data Source=xxxxx;uid=xxxxx;password=xxxxx" Dim ds As New DataSet Dim _sql As String = "SELECT [Exceptions].Employeenumber,[Exceptions].exceptiondate, [Exceptions].starttime, [exceptions].endtime, [Exceptions].code, datediff(minute, starttime, endtime) as duration INTO scratchpad3" & _ " FROM Employees INNER JOIN Exceptions ON [Exceptions].EmployeeNumber = [Exceptions].Employeenumber" & _ " where [Exceptions].exceptiondate between @payperiodstartdate and @payperiodenddate" & _ " GROUP BY [Exceptions].Employeenumber, [Exceptions].Exceptiondate, [Exceptions].starttime, [exceptions].endtime," & _ " [Exceptions].code, [Exceptions].exceptiondate" connection = New SqlConnection(connectionString) connection.Open() Dim _CMD As SqlCommand = New SqlCommand(_sql, connection) _CMD.Parameters.AddWithValue("@payperiodstartdate", payperiodstartdate) _CMD.Parameters.AddWithValue("@payperiodenddate", payperiodenddate) adapter.SelectCommand = _CMD Try adapter.Fill(ds) If ds Is Nothing OrElse ds.Tables.Count = 0 OrElse ds.Tables(0).Rows.Count = 0 Then 'it's empty MessageBox.Show("There was no data for this time period. Press Ok to continue", "No Data") connection.Close() Exceptions.saveButton.Enabled = False Exceptions.Hide() Else connection.Close() End If Catch ex As Exception MessageBox.Show(ex.ToString) connection.Close() End Try Exceptions.Show() End Sub Private Sub payrollButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles payrollButton.Click Payrollfinal.Show() End Sub End Class and when I run my program and press this button Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exceptionsButton.Click I have my date range within a time that I know that my dataset should produce a result, but when I put a line break in my code here: adapter.Fill(ds) and look at it in debug, I show a table value of 0. If I run the same query that I have to produce these results in sql analyser, I see 1 result. Can someone see why my query on my form produces a different result than the sql analyser does? Also here is my schema for my two tables: Exceptions employeenumber varchar no 50 yes no no SQL_Latin1_General_CP1_CI_AS exceptiondate datetime no 8 yes (n/a) (n/a) NULL starttime datetime no 8 yes (n/a) (n/a) NULL endtime datetime no 8 yes (n/a) (n/a) NULL duration varchar no 50 yes no no SQL_Latin1_General_CP1_CI_AS code varchar no 50 yes no no SQL_Latin1_General_CP1_CI_AS approvedby varchar no 50 yes no no SQL_Latin1_General_CP1_CI_AS approved varchar no 50 yes no no SQL_Latin1_General_CP1_CI_AS time timestamp no 8 yes (n/a) (n/a) NULL employees employeenumber varchar no 50 no no no SQL_Latin1_General_CP1_CI_AS name varchar no 50 no no no SQL_Latin1_General_CP1_CI_AS initials varchar no 50 no no no SQL_Latin1_General_CP1_CI_AS loginname1 varchar no 50 yes no no SQL_Latin1_General_CP1_CI_AS

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  • i don't solve "must declare a body because it is not marked abstract, extern, or partial" problem?

    - by programmerist
    How can i solve "must declare a body because it is not marked abstract, extern, or partial". This problem. Can you show me some advices? Full Error message is about Save, Update, Delete, Select events... Full message sample : GenoTip.DAL._AccessorForSQL.Save(string, System.Collections.Specialized.ListDictionary, System.Data.CommandType)' must declare a body because it is not marked abstract, extern, or partial This error also return in Update, Delete, Select... public abstract class _AccessorForSQL { public virtual bool Save(string sp, ListDictionary ld, CommandType cmdType); public virtual bool Update(); public virtual bool Delete(); public virtual DataSet Select(); } class GenAccessor : _AccessorForSQL { DataSet ds; DataTable dt; public override bool Save(string sp, ListDictionary ld, CommandType cmdType) { SqlConnection con = null; SqlCommand cmd = null; SqlDataReader dr = null; try { con = GetConnection(); cmd = new SqlCommand(sp, con); con.Open(); cmd.CommandType = cmdType; foreach (string ky in ld.Keys) { cmd.Parameters.AddWithValue(ky, ld[ky]); } dr = cmd.ExecuteReader(); ds = new DataSet(); dt = new DataTable(); ds.Tables.Add(dt); ds.Load(dr, LoadOption.OverwriteChanges, dt); } catch (Exception exp) { HttpContext.Current.Trace.Warn("Error in GetCustomerByID()", exp.Message, exp); } finally { if (dr != null) dr.Close(); if (con != null) con.Close(); } return (ds.Tables[0].Rows.Count 0) ? true : false; } public override bool Update() { return true; } public override bool Delete() { return true; } public override DataSet Select() { DataSet dst = new DataSet(); return dst; } private static SqlConnection GetConnection() { string connStr = WebConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; SqlConnection conn = new SqlConnection(connStr); return conn; }

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  • MBR Booting from DOS

    - by eflukx
    For a project I would like to invoke the MBR on the first harddisk directly from DOS. I've written a small assembler program that loads the MBR in memory at 0:7c00h an does a far jump to it. I've put my util on a bootable floppy. The disk (HD0, 0x80) i'm trying to boot has a TrueCrypt boot loader on it. It shows up the TrueCrypt screen, but after typing in the password it crashes the system. When I run my little utlility (w00t.com) on a normal WinXP machine it seams to crash immedealty. Apparently I'm forgetting some crucial stuff the BIOS normally does, my guess is it's something trivial. Can someone with better bare-metal DOS and BIOS experience help me out? Heres my code: .MODEL tiny .386 _TEXT SEGMENT USE16 INCLUDE BootDefs.i ORG 100h start: ; http://vxheavens.com/lib/vbw05.html ; Before DOS has booted the BIOS stores the amount of usable lower memory ; in a word located at 0:413h in memory. We going to erase this value because ; we have booted dos before loading the bootsector, and dos is fat (and ugly). ; fake free memory ;push ds ;push 0 ;pop ds ;mov ax, TC_BOOT_LOADER_SEGMENT / 1024 * 16 + TC_BOOT_MEMORY_REQUIRED ;mov word ptr ds:[413h], ax ;ax = memory in K ;pop ds ;lea si, memory_patched_msg ;call print ;mov ax, cs mov ax, 0 mov es, ax ; read first sector to es:7c00h (== cs:7c00) mov dl, 80h mov cl, 1 mov al, 1 mov bx, 7c00h ;load sector to es:bx call read_sectors lea si, mbr_loaded_msg call print lea si, jmp_to_mbr_msg call print ;Set BIOS default values in environment cli mov dl, 80h ;(drive C) xor ax, ax mov ds, ax mov es, ax mov ss, ax mov sp, 0ffffh sti push es push 7c00h retf ;Jump to MBR code at 0:7c00h ; Print string print: xor bx, bx mov ah, 0eh cld @@: lodsb test al, al jz print_end int 10h jmp @B print_end: ret ; Read sectors of the first cylinder read_sectors: mov ch, 0 ; Cylinder mov dh, 0 ; Head ; DL = drive number passed from BIOS mov ah, 2 int 13h jnc read_ok lea si, disk_error_msg call print read_ok: ret memory_patched_msg db 'Memory patched', 13, 10, 7, 0 mbr_loaded_msg db 'MBR loaded', 13, 10, 7, 0 jmp_to_mbr_msg db 'Jumping to MBR code', 13, 10, 7, 0 disk_error_msg db 'Disk error', 13, 10, 7, 0 _TEXT ENDS END start

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  • How to call base abstract or interface from DAL into BLL?

    - by programmerist
    How can i access abstract class in BLL ? i shouldn't see GenAccessor in BLL it must be private class GenAccessor . i should access Save method over _AccessorForSQL. ok? MY BLL cs: public class AccessorForSQL: GenoTip.DAL._AccessorForSQL { public bool Save(string Name, string SurName, string Adress) { ListDictionary ld = new ListDictionary(); ld.Add("@Name", Name); ld.Add("@SurName", SurName); ld.Add("@Adress", Adress); return **base.Save("sp_InsertCustomers", ld, CommandType.StoredProcedure);** } } i can not access base.Save....???????? it is my DAL Layer: namespace GenoTip.DAL { public abstract class _AccessorForSQL { public abstract bool Save(string sp, ListDictionary ld, CommandType cmdType); public abstract bool Update(); public abstract bool Delete(); public abstract DataSet Select(); } private class GenAccessor : _AccessorForSQL { DataSet ds; DataTable dt; public override bool Save(string sp, ListDictionary ld, CommandType cmdType) { SqlConnection con = null; SqlCommand cmd = null; SqlDataReader dr = null; try { con = GetConnection(); cmd = new SqlCommand(sp, con); con.Open(); cmd.CommandType = cmdType; foreach (string ky in ld.Keys) { cmd.Parameters.AddWithValue(ky, ld[ky]); } dr = cmd.ExecuteReader(); ds = new DataSet(); dt = new DataTable(); ds.Tables.Add(dt); ds.Load(dr, LoadOption.OverwriteChanges, dt); } catch (Exception exp) { HttpContext.Current.Trace.Warn("Error in GetCustomerByID()", exp.Message, exp); } finally { if (dr != null) dr.Close(); if (con != null) con.Close(); } return (ds.Tables[0].Rows.Count 0) ? true : false; } public override bool Update() { return true; } public override bool Delete() { return true; } public override DataSet Select() { DataSet dst = new DataSet(); return dst; } private static SqlConnection GetConnection() { string connStr = WebConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; SqlConnection conn = new SqlConnection(connStr); return conn; }

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  • What is the best algorithm for this problem?

    - by mark
    What is the most efficient algorithm to solve the following problem? Given 6 arrays, D1,D2,D3,D4,D5 and D6 each containing 6 numbers like: D1[0] = number D2[0] = number ...... D6[0] = number D1[1] = another number D2[1] = another number .... ..... .... ...... .... D1[5] = yet another number .... ...... .... Given a second array ST1, containing 1 number: ST1[0] = 6 Given a third array ans, containing 6 numbers: ans[0] = 3, ans[1] = 4, ans[2] = 5, ......ans[5] = 8 Using as index for the arrays D1,D2,D3,D4,D5 and D6, the number that goes from 0, to the number stored in ST1[0] minus one, in this example 6, so from 0 to 6-1, compare each res array against each D array My algorithm so far is: I tried to keep everything unlooped as much as possible. EML := ST1[0] //number contained in ST1[0] EML1 := 0 //start index for the arrays D While EML1 < EML if D1[ELM1] = ans[0] goto two if D2[ELM1] = ans[0] goto two if D3[ELM1] = ans[0] goto two if D4[ELM1] = ans[0] goto two if D5[ELM1] = ans[0] goto two if D6[ELM1] = ans[0] goto two ELM1 = ELM1 + 1 return 0 //bad row of numbers, if while ends two: EML1 := 0 start index for arrays Ds While EML1 < EML if D1[ELM1] = ans[1] goto two if D2[ELM1] = ans[1] goto two if D3[ELM1] = ans[1] goto two if D4[ELM1] = ans[1] goto two if D5[ELM1] = ans[1] goto two if D6[ELM1] = ans[1] goto two ELM1 = ELM1 + 1 return 0 three: EML1 := 0 start index for arrays Ds While EML1 < EML if D1[ELM1] = ans[2] goto two if D2[ELM1] = ans[2] goto two if D3[ELM1] = ans[2] goto two if D4[ELM1] = ans[2] goto two if D5[ELM1] = ans[2] goto two if D6[ELM1] = ans[2] goto two ELM1 = ELM1 + 1 return 0 four: EML1 := 0 start index for arrays Ds While EML1 < EML if D1[ELM1] = ans[3] goto two if D2[ELM1] = ans[3] goto two if D3[ELM1] = ans[3] goto two if D4[ELM1] = ans[3] goto two if D5[ELM1] = ans[3] goto two if D6[ELM1] = ans[3] goto two ELM1 = ELM1 + 1 return 0 five: EML1 := 0 start index for arrays Ds While EML1 < EML if D1[ELM1] = ans[4] goto two if D2[ELM1] = ans[4] goto two if D3[ELM1] = ans[4] goto two if D4[ELM1] = ans[4] goto two if D5[ELM1] = ans[4] goto two if D6[ELM1] = ans[4] goto two ELM1 = ELM1 + 1 return 0 six: EML1 := 0 start index for arrays Ds While EML1 < EML if D1[ELM1] = ans[0] return 1 //good row of numbers if D2[ELM1] = ans[0] return 1 if D3[ELM1] = ans[0] return 1 if D4[ELM1] = ans[0] return 1 if D5[ELM1] = ans[0] return 1 if D6[ELM1] = ans[0] return 1 ELM1 = ELM1 + 1 return 0 As language of choice, it would be pure c

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  • Infinite loop when adding a row to a list in a class in python3

    - by Margaret
    I have a script which contains two classes. (I'm obviously deleting a lot of stuff that I don't believe is relevant to the error I'm dealing with.) The eventual task is to create a decision tree, as I mentioned in this question. Unfortunately, I'm getting an infinite loop, and I'm having difficulty identifying why. I've identified the line of code that's going haywire, but I would have thought the iterator and the list I'm adding to would be different objects. Is there some side effect of list's .append functionality that I'm not aware of? Or am I making some other blindingly obvious mistake? class Dataset: individuals = [] #Becomes a list of dictionaries, in which each dictionary is a row from the CSV with the headers as keys def field_set(self): #Returns a list of the fields in individuals[] that can be used to split the data (i.e. have more than one value amongst the individuals def classified(self, predicted_value): #Returns True if all the individuals have the same value for predicted_value def fields_exhausted(self, predicted_value): #Returns True if all the individuals are identical except for predicted_value def lowest_entropy_value(self, predicted_value): #Returns the field that will reduce <a href="http://en.wikipedia.org/wiki/Entropy_%28information_theory%29">entropy</a> the most def __init__(self, individuals=[]): and class Node: ds = Dataset() #The data that is associated with this Node links = [] #List of Nodes, the offspring Nodes of this node level = 0 #Tree depth of this Node split_value = '' #Field used to split out this Node from the parent node node_value = '' #Value used to split out this Node from the parent Node def split_dataset(self, split_value): fields = [] #List of options for split_value amongst the individuals datasets = {} #Dictionary of Datasets, each one with a value from fields[] as its key for field in self.ds.field_set()[split_value]: #Populates the keys of fields[] fields.append(field) datasets[field] = Dataset() for i in self.ds.individuals: #Adds individuals to the datasets.dataset that matches their result for split_value datasets[i[split_value]].individuals.append(i) #<---Causes an infinite loop on the second hit for field in fields: #Creates subnodes from each of the datasets.Dataset options self.add_subnode(datasets[field],split_value,field) def add_subnode(self, dataset, split_value='', node_value=''): def __init__(self, level, dataset=Dataset()): My initialisation code is currently: if __name__ == '__main__': filename = (sys.argv[1]) #Takes in a CSV file predicted_value = "# class" #Identifies the field from the CSV file that should be predicted base_dataset = parse_csv(filename) #Turns the CSV file into a list of lists parsed_dataset = individual_list(base_dataset) #Turns the list of lists into a list of dictionaries root = Node(0, Dataset(parsed_dataset)) #Creates a root node, passing it the full dataset root.split_dataset(root.ds.lowest_entropy_value(predicted_value)) #Performs the first split, creating multiple subnodes n = root.links[0] n.split_dataset(n.ds.lowest_entropy_value(predicted_value)) #Attempts to split the first subnode.

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  • SQL SERVER – Introduction to Extended Events – Finding Long Running Queries

    - by pinaldave
    The job of an SQL Consultant is very interesting as always. The month before, I was busy doing query optimization and performance tuning projects for our clients, and this month, I am busy delivering my performance in Microsoft SQL Server 2005/2008 Query Optimization and & Performance Tuning Course. I recently read white paper about Extended Event by SQL Server MVP Jonathan Kehayias. You can read the white paper here: Using SQL Server 2008 Extended Events. I also read another appealing chapter by Jonathan in the book, SQLAuthority Book Review – Professional SQL Server 2008 Internals and Troubleshooting. After reading these excellent notes by Jonathan, I decided to upgrade my course and include Extended Event as one of the modules. This week, I have delivered Extended Events session two times and attendees really liked the said course. They really think Extended Events is one of the most powerful tools available. Extended Events can do many things. I suggest that you read the white paper I mentioned to learn more about this tool. Instead of writing a long theory, I am going to write a very quick script for Extended Events. This event session captures all the longest running queries ever since the event session was started. One of the many advantages of the Extended Events is that it can be configured very easily and it is a robust method to collect necessary information in terms of troubleshooting. There are many targets where you can store the information, which include XML file target, which I really like. In the following Events, we are writing the details of the event at two locations: 1) Ringer Buffer; and 2) XML file. It is not necessary to write at both places, either of the two will do. -- Extended Event for finding *long running query* IF EXISTS(SELECT * FROM sys.server_event_sessions WHERE name='LongRunningQuery') DROP EVENT SESSION LongRunningQuery ON SERVER GO -- Create Event CREATE EVENT SESSION LongRunningQuery ON SERVER -- Add event to capture event ADD EVENT sqlserver.sql_statement_completed ( -- Add action - event property ACTION (sqlserver.sql_text, sqlserver.tsql_stack) -- Predicate - time 1000 milisecond WHERE sqlserver.sql_statement_completed.duration > 1000 ) -- Add target for capturing the data - XML File ADD TARGET package0.asynchronous_file_target( SET filename='c:\LongRunningQuery.xet', metadatafile='c:\LongRunningQuery.xem'), -- Add target for capturing the data - Ring Bugger ADD TARGET package0.ring_buffer (SET max_memory = 4096) WITH (max_dispatch_latency = 1 seconds) GO -- Enable Event ALTER EVENT SESSION LongRunningQuery ON SERVER STATE=START GO -- Run long query (longer than 1000 ms) SELECT * FROM AdventureWorks.Sales.SalesOrderDetail ORDER BY UnitPriceDiscount DESC GO -- Stop the event ALTER EVENT SESSION LongRunningQuery ON SERVER STATE=STOP GO -- Read the data from Ring Buffer SELECT CAST(dt.target_data AS XML) AS xmlLockData FROM sys.dm_xe_session_targets dt JOIN sys.dm_xe_sessions ds ON ds.Address = dt.event_session_address JOIN sys.server_event_sessions ss ON ds.Name = ss.Name WHERE dt.target_name = 'ring_buffer' AND ds.Name = 'LongRunningQuery' GO -- Read the data from XML File SELECT event_data_XML.value('(event/data[1])[1]','VARCHAR(100)') AS Database_ID, event_data_XML.value('(event/data[2])[1]','INT') AS OBJECT_ID, event_data_XML.value('(event/data[3])[1]','INT') AS object_type, event_data_XML.value('(event/data[4])[1]','INT') AS cpu, event_data_XML.value('(event/data[5])[1]','INT') AS duration, event_data_XML.value('(event/data[6])[1]','INT') AS reads, event_data_XML.value('(event/data[7])[1]','INT') AS writes, event_data_XML.value('(event/action[1])[1]','VARCHAR(512)') AS sql_text, event_data_XML.value('(event/action[2])[1]','VARCHAR(512)') AS tsql_stack, CAST(event_data_XML.value('(event/action[2])[1]','VARCHAR(512)') AS XML).value('(frame/@handle)[1]','VARCHAR(50)') AS handle FROM ( SELECT CAST(event_data AS XML) event_data_XML, * FROM sys.fn_xe_file_target_read_file ('c:\LongRunningQuery*.xet', 'c:\LongRunningQuery*.xem', NULL, NULL)) T GO -- Clean up. Drop the event DROP EVENT SESSION LongRunningQuery ON SERVER GO Just run the above query, afterwards you will find following result set. This result set contains the query that was running over 1000 ms. In our example, I used the XML file, and it does not reset when SQL services or computers restarts (if you are using DMV, it will reset when SQL services restarts). This event session can be very helpful for troubleshooting. Let me know if you want me to write more about Extended Events. I am totally fascinated with this feature, so I’m planning to acquire more knowledge about it so I can determine its other usages. Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Optimization, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL Training, SQLServer, T SQL, Technology Tagged: SQL Extended Events

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  • how to pass the parameters to the urlconnection in java/android?

    - by androidbase
    hi all, i can establish a connection using HttpUrlConnection. my code below. client = new DefaultHttpClient(); URL action_url = new URL(actionUrl); conn = (HttpURLConnection) action_url.openConnection(); conn.setDoOutput(true); conn.setDoInput(true); conn.setRequestProperty("domain", "bschool.hbs.edu"); conn.setRequestProperty("userType", "2"); conn.setRequestProperty("referer", "http://www.alumni.hbs.edu/"); conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); conn.setRequestMethod(HttpPost.METHOD_NAME); DataOutputStream ds = new DataOutputStream(conn.getOutputStream()); String content = "username=username1&password=password11"; Log.v(TAG, "content: " + content); ds.writeBytes(content); ds.flush(); ds.close(); InputStream in = conn.getInputStream();//**getting filenotfound exception here.** BufferedReader reader = new BufferedReader( new InputStreamReader(in)); StringBuilder str1 = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { str1.append(line); Log.v(TAG, "line:" + line); } in.close(); s = str1.toString(); getting filenotfound exception. dont know why? else give me some suggestion to pass username and passwrod parameter to the url by code..

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  • Make a Crystal Report with data fetched from two differents tables

    - by Selom
    Hi, Im using vb.net and I need to fetch data from two different tables and display it in form of report. These are the schemas and data of my two tables: CREATE TABLE personal_details (staff_ID integer PRIMARY KEY, title varchar(10), fn varchar(250), ln varchar(250), mn varchar(250), dob varchar(50), hometown varchar(250), securityno varchar(50), phone varchar(15), phone2 varchar(15), phone3 varchar(15), email varchar(250), address varchar(300), confirmation varchar(50), retirement varchar(50), designation varchar(250), region varchar(250)); INSERT INTO personal_details VALUES(1,'Mr.','Selom','AMOUZOU','Kokou','Sunday, March 28, 2010','Ho',7736,'024-747-4883','277-383-8383','027-838-3837','[email protected]','Lapaz Kum Hotel','Sunday, March 28, 2010','Sunday, March 28, 2010','Designeur','Brong Ahafo'); CREATE TABLE training( training_ID integer primary key NOT NULL, staff_ID varchar(100), training_level varchar (60), school_name varchar(100), start_date varchar(100), end_date varchar(100)); INSERT INTO training VALUES(1,1,'Primary School','New School','Feb 1955','May 1973'); INSERT INTO training VALUES(2,1,'Middle/JSS','Ipmc','Feb 1955','May 1973'); Im trying to fetch and display data from the tables above the following way: Dim rpt As New CrystalReport1() Dim da As New SQLiteDataAdapter Dim ds As New presbydbDataSet ds.EnforceConstraints = False If conn.State = ConnectionState.Closed Then conn.Open() End If Dim cmd As New SQLiteCommand("SELECT p.fn, t.training_level FROM personal_details p INNER JOIN training t ON p.staff_ID = t.staff_ID", conn) cmd.ExecuteNonQuery() da.SelectCommand = cmd da.Fill(ds) rpt.SetDataSource(ds) CrystalReportViewer1.ReportSource = rpt conn.Close() My problem is that nothing displays on the report unless I take off either the training fields or the personal_details fields from the report. Need your help. Thanks

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  • jQuery File Save As dialog for dynamic content

    - by DS
    Hi, I've a servlet that is invoked via jquery ajax. The resulting XML is then transformed using XSL and displayed on screen. Now, the requirement is to either print or save this content to the local machine. The print portion is working fine but I'm stuck at the Save As part. How do I do this using jquery/javascript? I'm using IE8/XP. I tried document.execCommand('SaveAs'); on button click but it doesn't seem to work in IE8. It shows the alerts I put in till that point, but doesn't bring up the dialog box. What's going wrong here?

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