raspberry kodi (on rasbian, not osmc)

sudo apt-get install kodi’

ssrs Berechtigungen STAMM Ordner

Als Admin einen Browser öffnen, dann localhost/Reports/browse/ aufrufen, dort finden sich die Funktion Neu, Hochladen, Ordner verwalten, Sicht, Suchen
Ordner verwalten erlaubt es die Berechtigungen für den Stamm Ordner zu vergeben

linux scan network (rasperry)

sudo apt-get install nmap

sudo nmap -sn 192.168.1.0/24

https://nmap.org/book/man.html

SSRS Sql Server Reporting Services Basics

Insert Chart (rechte Maustaste) 

1) Charttyp auswählen
2) Felder aus Dataset mit Drag and Drop in die Chart Data ziehen: Summe Values Y Achse, Category Groups X Achse, Series Group: Legende

Toggle Visibility

1) Properties / ToggleItem auf eine Textbox setzen (z.b. tbToggle), neben dieser erscheint ein +- Symbol, Hidden Eigenschaft gibt an, ob die Gruppe anfangs sichtbar ist oder nicht

2) Bei der Toggle Textbox die Eigenschaft InitialToggleState setzten

Exchange Server Version

            string exchangeVersion = "";
            exchangeVersion = OwaTools.GetExchangeServerVersion("foo.bar@outlook.com", "pwd", "https://outlook.office365.com/EWS/Exchange.asmx");


using Microsoft.Exchange.WebServices.Data;


        /// <summary>
        /// gets Exchange Server Version
        /// </summary>
        /// <param name="userName">Domain\Username or email adress in some cases (office365)</param>
        /// <param name="userPassword">pwd</param>
        /// <param name="uri">https://server/EWS/EWS/Exchange.asmx e.g. https://outlook.office365.com/EWS/Exchange.asmx  </param>
        /// <returns></returns>
        public static string GetExchangeServerVersion(string userName, string userPassword, string uri)
        {
            var service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);
            service.Credentials = new NetworkCredential(userName, userPassword);
            service.Url = new Uri(uri);
            ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true; // ignore invalid or self signed certificates
            var inbox = Folder.Bind(service, WellKnownFolderName.Contacts);
            var esi = inbox.Service.ServerInfo;
            return esi.VersionString;
        }

wpf Default Style überschreiben, Datatrigger

                        <TextBox x:Name="Tb_Id" Text="bla">
                            <TextBox.Style>
                                <Style TargetType="TextBox" BasedOn="{StaticResource {x:Type TextBox}}">
                                    <Setter Property="ToolTip" Value="tip1"></Setter>
                                    <Style.Triggers>
                                        <DataTrigger Binding="{Binding Id}" Value="ded371c8-ca5c-416f-9879-6325650e279b">
                                            <Setter Property="ToolTip" Value="Tip2"></Setter>
                                        </DataTrigger>
                                    </Style.Triggers>
                                </Style>
                            </TextBox.Style>

                        </TextBox>

wpf datatemplate usercontrol

<UserControl x:Class="isiQiri.ConfigTool.View.SupportView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             >
    <UserControl.Resources>
        <DataTemplate DataType="{x:Type class1}">
            <StackPanel Orientation="Horizontal" >
                <TextBlock Text="Shift"></TextBlock>
            </StackPanel>
        </DataTemplate>

        <DataTemplate DataType="{x:Type class2}">
            <StackPanel Orientation="Horizontal" DataContext="{Binding}">
                <TextBlock Text="EditorViewModel: " />
            </StackPanel>
        </DataTemplate>
     
    </UserControl.Resources>

   
    <StackPanel>


   <ContentControl Content="{Binding}"></ContentControl>

wpf validierung IDataErrorInfo, ValidatesOnDataErrors=True, NotifyOnValidationError=True

um eigene DataError Validierung durchzuführen, muß das Viewmodel IDataErrorInfo implementieren - das ist ein INdexer auf das Viewmodel, dem als string der Properyname der zu validierenden Eigenschaft übergeben wird, und ein string mit validierungsmessage zurückgibt. null bedeutet kein Fehler.
Im Xaml müssen im Databinding ValidatesOnDataErrors=True, NotifyOnValidationError=True gesetz sein

IDataErrorInfo implementierung:

ganz einfach (in viewmodelbaseclass z.b.)
        public virtual string this[string columnName] => null; // nothing to validate here
        public virtual string Error => EditorResources.DefaultErrorMessage;


oder dann ausimplementiert:

      public override string this[string columnName]
        {
            get
            {
                switch (columnName)
                {
                    case nameof(MinNumericValue):
                    case nameof(MaxNumericValue):
                        return _validateMinMax(_doNumericValidation, MinNumericValue, MaxNumericValue);

                    case nameof(MinDecimalValue):
                    case nameof(MaxDecimalValue):
                        return _validateMinMax(_doDecimalValidation, MinDecimalValue, MaxDecimalValue);

                    case nameof(MinDateTimeValue):
                    case nameof(MaxDateTimeValue):
                        return _validateMinMax(_doDateTimeValidation, MinDateTimeValue, MaxDateTimeValue);

                    default:
                        return null;
                }
            }
        }

die Propery Setter:

        public int? MaxNumericValue
        {
            get => _maxNumericValue;
            set
            {
                _maxNumericValue = value;
                _doNumericValidation = true;
                OnPropertyChanged();
                OnPropertyChanged(nameof(MinNumericValue));
                _doNumericValidation = false;
                IsModified = true;
             
            }
        }



        public int? MinNumericValue
        {
            get => _minNumericValue;
            set
            {
                _minNumericValue = value;
                _doNumericValidation = true;
                OnPropertyChanged();
                OnPropertyChanged(nameof(MaxNumericValue));
                _doNumericValidation = false;
                IsModified = true;
            }
        }

usw.

einfache Min Max Validierung:

        private string _validateMinMax <T>(bool doValidation, T? min, T? max) where T: struct, IComparable<T>
        {
            if (!doValidation || null == min || null == max) return null;


            if (0 >= min.Value.CompareTo(max.Value))
                return null;
            return EditorResources.MinMax_Validation;

        }

auch gut:
https://www.codeproject.com/Tips/858492/WPF-Validation-Using-IDataErrorInfo

linux netzwerk befehle

ip a
dhclient interfacename

raspberry pi linux first steps - fixe statische IP Adresse

Keyboard de

sudo nano /etc/default/keyboard
xkblayout="de"

sudo shutdown -r now

sudo raspi-config

fixe statische IP Adresse

sudo nano /etc/dhcpcd.conf:

interface eth0
static ip_address=192.168.1.2/24
static routers=192.168.1.1
static domain_name_servers=192.168.1.1

interface wlan0
static ip_address=192.168.1.6/24
static routers=192.168.1.1
static domain_name_servers=192.168.1.1

Zeitzone

der link /etc/localtime verweist auf die aktuelle lokale Zeitzoneen datei, cat /etc/localtime zeigt diese an, auf CET (Central European Time) setzten mittels:

sudo ln -sf /usr/share/zoneinfo/CET /etc/localtime

überprüfen mit:
date
date -u 

sql server Row number / Zeilen nummer

select ROW_NUMBER() OVER (ORDER by ColumnDefinition) as rownumber, *
 from sb.RowDefinition  order by ColumnDefinition

posh-git power shell erweiterung

auf github posh-git repro runterladen:
git clone https://github.com/dahlbyk/posh-git.git

Power shell Profile Script anlegen wenn noch nicht vorhanden (autoexec):
New-Item -ItemType File -Path $Profile -Force

%HOMEPATH%/Documents/WindowsPowerShell\Microsoft.PowerShell_profile (z.b. C:\Users\xxx\Documents\WindowsPowerShell )

im profile hinzufügen:

$installDir = "D:\github\posh-git"
Import-Module $installDir\src\posh-git.psd1
Add-PoshGitToProfile -WhatIf:$WhatIf -Force:$Force -Verbose:$Verbose

xaml basics (Binding ...)

Element.Eigenschaftsschreibweise

normalerweise werden Attribute (Eigenschaften) als String angegebeen:

<Button Width="100" Background="blue"> (parser creiert Button und setzt dessen Background Eigenschaft vom Typ Brush auf einen Solid...Brush den er aus einem StringToColorConverter erzeugt)

<Button Width="100">

<Button.Background>

<LinearGradientBrush>

<GradientStop Color="RoyalBlue" Offset="0.0" />

<GradientStop Color="White" Offset="1.0" />

</LinearGradientBrush>

</Button.Background>

</Button>

Markup Erweiterungen

system.Windows.Data.Binding, StaticResource, DynamicResource x

Binding:

Quellen: DataContext, Source, RelativSource, Elementname

Default mäßig genügt es eine Eigenschaft des Datacontextes anzugeben (und damit aufs Viewmodel=Datacontext zu binden, dieses wird solange im Baum aufwärts gesucht bis irgendein DataContext gefunden wird):

{Binding MyDatacontextProperty}

 - es ist aber auch möglich auf Eigenschaften von GUI Elemente zu binden mittels der Eigenschaft Elementname:

Text="{Binding MyText, ElementName=MyUserControl}"

<Binding Path ="Foreground" RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType=UserControl}"/>

Parent: {RelativeSource AncestorType=ContentControl}

multiBinding:

                            <TextBlock.Foreground>
                                <MultiBinding Converter="{StaticResource ColorStringToBrush}">
                                    <Binding Path="FgColor" />
                                    <Binding Path ="Foreground, Elementname=Root"/>
                                </MultiBinding>
                            </TextBlock.Foreground>

Default Brushes:

_textbox.SystemColors.WindowTextBrush

_textbox.Background = SystemColors.WindowBrush;

c# if (x is Brush brush)

type abfrage gleich in variable

Wpf Converter with DependendyProperty

    public class ColorStringToBrushConverter : DependencyObject, IValueConverter
    {
        public static readonly DependencyProperty DefaultBrush_PROPERTY = DependencyProperty.Register("DefaultBrush", typeof(Brush), typeof(ColorStringToBrushConverter));

        public Brush DefaultBrush
        {
            get => (Brush)GetValue(DefaultBrush_PROPERTY);
            set => SetValue(DefaultBrush_PROPERTY, value);
        }

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {

            var brush = DefaultBrush;
            string colorString = value as string;

            if (string.IsNullOrEmpty(colorString)) //use parameter if value not set
                colorString = parameter as string;

            if (!string.IsNullOrEmpty(colorString))
            {
                var colorObject = ColorConverter.ConvertFromString(colorString);
                if (null != colorObject)
                {
                    var color = (Color)colorObject;
                    brush = new SolidColorBrush(color);
                }

            }

            return brush;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

linux hibernate / Ruhezustand

systemctl suspend
sudo pm-suspend

.net colors

            var c1 = System.Drawing.Color.Aqua;
            var c2 = SystemColors.ActiveBorderBrush;
            var c3 = System.Windows.Media.Color.FromRgb(3, 0, 0);

in Wpf gibts vordefinierte Brushes:
System.Windows.Media.Brushes ... eine Liste von SolidColorBrushes

BIOS / Bootmenu

Marke: BIOS / Bootmenu:

Lenovo: F1 / F12

android debug bridge adb, shell basics Samsung

adb reboot bootloader

adb installieren und starten

entweder android Studio oder sdk installieren, adb.exe ist in
C:\Program Files (x86)\Android\android-sdk\platform-tools

adb befehle

adb devices //listet alle verbundenen geräte auf
adb shell //linux shell auf android gerät aufmachen

Adb Shell

partitionen

cat /proc/partitions
df

power shell parameter example cmdlet

<#

    .SYNOPSIS

    Upload a ConfigFile over Default Configuration

 



    .DESCRIPTION

    Uploads File with given Path over Default Configuration (is overwritten !!!)

    of a Database (default Db) of a sql SERVERINSTANCE (default localhost\sqlexpress)



    .EXAMPLE

        .\UploadConfigFile.ps1 D:\temp\Configuration.

            uploads the file Configuration. over the Default Configuration

    .EXAMPLE

        .\UploadConfigFile.ps1 D:\temp\Configuration. -ServerInstance myserver -Database db1

            uploads the file Configuration. over the Default Configuration on Database db1 of Sql Server myserver



    .PARAMETER FilePath

        mandatory, file to be uploaded over the default  configuration

    .PARAMETER Database

        optional, name of Database (default=Db)

    .PARAMETER ServerInstance

        optional, name of Sql Server Instance (default localhost/sqlexpress)







     

#>

[CmdletBinding()]

param

(

    [Parameter(Mandatory=$true)]

    [string]$FilePath,

    [string]$Database="Db",

    [string]$ServerInstance="localhost\sqlexpress"

)



$sqlCmd="exec UpdateConfigFile '$FilePath'"

Write-Debug "invoke-SqlCmd: $sqlcmd"

Invoke-Sqlcmd -ServerInstance $ServerInstance -Database $Database -Query $sqlCmd -QueryTimeout 65000

Write-Host "File uploaded over Default Configuration !"

mysql auf raspi

login von cmd:
mysql -u root -p

show databases;

c# CallerMemberName attribute gibt namen der aufrufender methode zurück

    private string HelpMe([CallerMemberName] string param = "")
    {
        return param;
    }

power shell debug verbose

dir variable:*pref*



$DebugPreference = "Continue"

 $VerbosePreference = "Continue"

Programmpfad herausfinden in shell (where in cmd oder power shell)

linux / unix: which
windows cmd: where.exe
power shell: where.exe

n powershell muß man where.exe schreiben, da where abkürzung für Where-Object ist

Getting __MigrationHistory Table

                 HistoryContext hc = new HistoryContext(myContext.Database.Connection,"dbo");
                    var migrations = hc.History.ToList();

c# temp dir: System.IO.Path.GetTempPath();

simple sql server merge for insert or update for single row

merge targetTableName as target
using (values (@Key)) as source (keyname)
on [Key]=source.keyname
when matched then
update set bla=@bla
when not matched then
insert ([key], bla)
values (@key, @bla)

Flags

      [Flags]
        public enum SettingFlags : long
        {
            /// <summary>
            /// hidden in config tool for normal users
            /// </summary>
            myflag = 0b1,
            AdvancedSetting = 0b10
        }

       [NotMapped]
        public bool AdvancedSetting
        {
            get => Flags.HasFlag(SettingFlags.AdvancedSetting);
            set => Flags=SetFlag(Flags, value, SettingFlags.AdvancedSetting);
        }

        public static SettingFlags SetFlag(SettingFlags flags, bool value, SettingFlags flag)
        {
            if (value)
                flags |= flag;
            else
                flags &= flag;
            return flags;
        }





oldschool:
        private bool GetBit(SettingFlags position)
        {
            var pos = (byte)position;
            var mask = (1 << pos);
            var bit = Flags & mask;
            return 0<bit ;
        }

        private void SetBit(bool value, SettingFlags position)
        {
            var pos = (byte) position;
            var mask = (1 << pos);
            if (value)
                Flags |= mask;
            else
                Flags &= ~mask;
        }

Useful Tools and Settings for Visual Studio

Tools -> Options:

Environment -> InternationalSettings

Language

Environment -> General

Color Theme Dark

Environment -> Fonts & Colors -> Inactive Selected Item

xaml editor better visible

Projects and Solutions –> General

Track Active Item in Solution Explorer

TextEditor -> c# -> Advanced

Outlining - Collapse #regions when collapsing to definitions

Tools:

Match Margin: 

https://marketplace.visualstudio.com/items?itemName=VisualStudioProductTeam.MatchMargin

WinForm bei Bedarf in Gui Task zurück

wichtig: Gui im Gui Thread öffnen !

        /// <summary>
        /// 1) check if correct thread, if not call in correct thread
        /// 2) sets Text of Control c
        /// </summary>
        /// <param name="c"></param>
        /// <param name="text"></param>
        public void _SetText(Control c, string text)
        {
            if (this.InvokeRequired)
                this.Invoke(new Action<Control, string>(_SetText), c, text);
            else
                c.Text = text;
        }



        public void _SetMax(int max)
        {
            if (this.InvokeRequired)
                this.Invoke(new Action<int>(_SetMax),max);
            else
                progressBar1.Maximum = max;
        }

        public void _IncProgressBar()
        {
            if (this.InvokeRequired)
                this.Invoke(new Action(_IncProgressBar));
            else
                progressBar1.Value += 1;
        }

longrunning c# Task mit Fehlerbehandlung

                var t = new Task(() => { ImportFile(tablename, conStr, ofd.FileName); },TaskCreationOptions.LongRunning);
                var nextTask = t.ContinueWith(antecedent =>
                {
                    if (antecedent.IsFaulted)
                    {
                        PLog.ShowAndLogError("SqlTools.ImportFile Error: " + antecedent?.Exception?.Message +antecedent?.Exception?.InnerException?.Message);
                    }
                    else if (antecedent.IsCanceled)
                    {
                        PLog.LogWarning("SqlTools.ImportFile Canceled: ");
                    }
                    else
                    {
                        PLog.LogInfo("SqlTools.ImportFile succeeded ! ");
                    }
                });
                t.Start();

Visual Studio aktive Datei im Solution Explorer anzeigen

Tools - Options - Projects and Solutions - Track Active Item in Solution Explorer

windows 10 prozesse

nach dem aufsetzten fall creators 35 hintergrundprozesse, 74 windows prozesse

gamil gruppen bearbeiten

In der Kontaktansicht mehrere Kontkte auswählen, dann erscheint oben ein Gruppenicon, damit kann man die Kontakte zu Gruppen hinzufügen

linux owndrive, flash

sudo apt-get install flashplugin-installer

sudo apt-get install owncloud-client

creating TPL Tasks c#

Task.Factory.StartNew(() => CalDaysAndSendMail(taskList), TaskCreationOptions.LongRunning);


Task has constructor from Action or Action

Action a = myVoidMethodWithoutParameters;
Task t = new Task(a);

kurz: var t = new Task(myVoidMethodWithoutParameters);

           Action
            Task t = new Task(a,obj);

void DoSomething(object o)

from https://www.codeproject.com/articles/189374/the-basics-of-task-parallelism-via-c:

        // use an Action delegate and named method
        Task task1 = new Task(new Action(printMessage));
        // use an anonymous delegate
        Task task2 = new Task(delegate { printMessage() });
        // use a lambda expression and a named method
        Task task3 = new Task(() => printMessage());
        // use a lambda expression and an anonymous method
        Task task4 = new Task(() => { printMessage() });:

    private static void printMessage() {
        Console.WriteLine("Hello, world!");
    }

Shortcuts

WINDOWS X, C ... Computerverwaltung
WINDOWS I ... neue Systemeinstellungs App
WINDOWS Q Cortana

Rechner aufräumen / Bereinigen, Performance

Services abdrehen:
Adobe

Deinstallieren:
Bonjour Apple Dienst

Einstellungs App / Persionalisierung / Farben / unten: Transparenz abschalten
Windows Taste + Pause => erweiterte Systemeinstellungen / Erweitert / Visuelle Effekte

sql server FileTable: Create Path

 
DECLARE @Val as nvarchar(4000)
DECLARE @NextVal as nvarchar(4000)
DECLARE @Pathlocator as hierarchyid = NULL
DECLARE @ParentLocator as hierarchyid = NULL
DECLARE @LastChildLocator as hierarchyid =NULL
DECLARE curInserted CURSOR LOCAL FOR  (select * from STRING_SPLIT('a1\b2\c1.txt','\'))
OPEN curInserted
FETCH NEXT FROM curInserted INTO @NextVal
SET @Val=@NextVal
WHILE (@@FETCH_STATUS = 0)
BEGIN
FETCH NEXT FROM curInserted INTO @NextVal

--check if Directory named Val already there (in Dir with parentLocator)
if (@ParentLocator is null)
BEGIN --------- root level => need parent_Path_locator is null
SET @Pathlocator = (select path_locator from MyFile where name like @Val and  parent_Path_locator is null ) -- from main Dir
SET @LastChildLocator = (select top 1 path_locator from MyFile where parent_Path_locator is null order by path_locator desc) -- get latest child
SET @ParentLocator = hierarchyid::GetRoot()
END
ELSE ----- not root level - query with parent_Path_locator = @ParentLocator
BEGIN
SET @Pathlocator = (select path_locator from MyFile where name like @Val and  parent_Path_locator = @ParentLocator ) -- from subdir
SET @LastChildLocator = (select top 1 path_locator from MyFile where parent_Path_locator=@ParentLocator order by path_locator desc) -- get latest child
END

if (@Pathlocator is null) --doesn't exist => have to create
BEGIN
-- get new PathLocator in parent Folder
SET @Pathlocator = @ParentLocator.GetDescendant(@LastChildLocator,NULL)
if (@@FETCH_STATUS = 0) -- not the last entry => its a dir
BEGIN
PRINT 'Create SubDir:' + @Val
INSERT INTO [dbo].MyFile ([name],is_directory,path_locator) SELECT @Val, 1, @Pathlocator  -- insert next child
END
ELSE --last entry =>  file
BEGIN
PRINT 'Create File:' + @Val
INSERT INTO [dbo].MyFile ([name],[file_stream],path_locator) SELECT @Val, CONVERT(VARBINARY(MAX),'TestFileText'), @Pathlocator  -- insert next child
END
END
ELSE
BEGIN
PRINT @Val +' already exists ...'
END
SET @Val=@NextVal
SET @ParentLocator = @Pathlocator
END --WHILE
CLOSE curInserted


select file_stream.GetFileNamespacePath() as RelativePath,  * from MyFile order by creation_time desc
select * from vMyFile where file_stream is null

sql server: FileTable and hierarchyid, insert folders and files into filetable by tsql

-- Filetablename: MyFile


--create testfolder
INSERT INTO MyFile (name, is_directory)   VALUES ('testFolder', 1)

--insert first file into testfolder:
DECLARE @ParentLocator as hierarchyid = (select path_locator from MyFile where parent_Path_locator is NULL and name like 'testfolder') --get parent
INSERT INTO [dbo].MyFile ([name],[file_stream],path_locator) SELECT 't2.txt', CONVERT(VARBINARY(MAX),'TestFileText'), @ParentLocator.GetDescendant(NULL,NULL) -- insert next child

DECLARE @ParentLocator as hierarchyid = (select path_locator from MyFile where parent_Path_locator is NULL and name like 'testfolder') --get parent

DECLARE @Child1Locator as hierarchyid = (select top 1 path_locator from MyFile where parent_Path_locator=@ParentLocator order by path_locator desc) -- get latest child

INSERT INTO [dbo].MyFile ([name],[file_stream],path_locator) SELECT 't2.txt', CONVERT(VARBINARY(MAX),'TestFileText'), @ParentLocator.GetDescendant(@Child1Locator,NULL) -- insert next child

sql server STRING_SPLIT

--select * from STRING_SPLIT('\dir1\d2\test.txt','\')


 
DECLARE @Val as nvarchar(4000)
DECLARE curInserted CURSOR LOCAL FOR  (select * from STRING_SPLIT('\dir1\d2\test.txt','\'))
OPEN curInserted
FETCH NEXT FROM curInserted INTO @Val
WHILE (@@FETCH_STATUS = 0)
BEGIN
PRINT @Val
  FETCH NEXT FROM curInserted INTO @Val
END
CLOSE curInserted

Sql Server Datetime Offset SWITCHOFFSET AT TIME ZONE

--AT TIME ZONE: time and offset are calculated for given timezone
--SWITCHOFFSET: only offset is changed, time remains the same


--create example table _dto for datetimeoffset demo
CREATE TABLE [dbo].[_dto](
[id] [int] IDENTITY(1,1) NOT NULL,
[dtoUtc] [datetimeoffset](7) NULL, --utc time
[dtoLocal] [datetimeoffset](7) NULL --local time
) ON [PRIMARY]
GO

--insert winter and sommertime demo test record
INSERT [dbo].[_dto] ( [dtoUtc]) VALUES (CAST(N'2018-01-23T10:00:00.0000000+00:00' AS DateTimeOffset)) -- winter time
GO
INSERT [dbo].[_dto] ([dtoUtc]) VALUES (CAST(N'2017-07-23T10:00:00.0000000+00:00' AS DateTimeOffset)) -- summer time
GO

--get string values for available sql server time zones:
select * from sys.time_zone_info;

--show result of SWITCHOFFSET and AT TIME ZONE
select dtoUtc ,  --original Utc Time (offset 00)
   SWITCHOFFSET(dtoUtc,1) as switch, -- time remains the same, only offset changes
   dtoUtc AT TIME ZONE 'Central Europe Standard Time' as AtTimeZone -- time and offset are transfered to destination time zone, winter and summer time are calculated correct
from _dto order by dto

--update _dto set dtoLocal= dtoUtc AT TIME ZONE 'Central Europe Standard Time' -- calculating local time from utc and store it
select * from  _dto

--drop table _dto; --clean up

Power Shell Variablen Ausgabe (String Concat, Expanding Sub Expressions)

Write-Verbose "ErrCount=$($Error.Count)"

relocate sql server Restore without creating table

Relocating sql server restore with powershell

sql server restore full & transactionlog backups

1) check waths inside the backup file:

RESTORE FILELISTONLY from disk = 'L:\My.bak'

you shoul get a list with first column
LogicalName
My 
My_log

RESTORE HEADERONLY FROM DISK='L:\My.trn'

should give you a list of all transaction log backups in this file
next backup FirstLSN=LastLSN of preceeding backup

2) restore full Backup:

use NoRecovery only if you want to restore Transaction Log afterwards

restore database myRestore from disk = 'L:\My.bak' with file=1, NORECOVERY,

move 'My' to 'd:\temp\my2.mdf',

move 'My_Log' to 'd:\temp\my2.ldf'

3) restore Transaction Logs:

restore database myRestore from disk = 'L:\My.trn' with file=1

if there are many transaction log backups in the file my.trn you have to restore it like this:

restore database myRestore from disk = 'L:\My.trn' with file=2

RESTORE HEADERONLY FROM DISK='L:\My.trn'

gives a list of backups in the file

c# iif (boolscherAusdruck) ? trueStatement : falseStatement;

(true) ? 1 : 0; //liefert immer 0 string todoStr = (done) ? "done !" : "todo";

local system, local service and so on / lokaler Dienst lokales System usw.

Following are NOT advised as it grant more privileges than required for running SQL Server Services Local System is a very high-privileged built-in account. It has extensive privileges on the local system and acts as the computer on the network. The actual name of the account is "NT AUTHORITY\SYSTEM". The Local Service account is a built-in account that has the same level of access to resources and objects as members of the Users group. This limited access helps safeguard the system if individual services or processes are compromised. Services that run as the Local Service account access network resources as a null session without credentials. Be aware that the Local Service account is not supported for the SQL Server or SQL Server Agent services. The actual name of the account is "NT AUTHORITY\LOCAL SERVICE". The Network Service account is a built-in account that has more access to resources and objects than members of the Users group. Services that run as the Network Service account access network resources by using the credentials of the computer account. The actual name of the account is "NT AUTHORITY\NETWORK SERVICE"