SQL SERVER SETTING Data Source, Server, Address, Addr, or Network Address in .NET

Create QR Code JIS X 0510 in .NET SQL SERVER SETTING Data Source, Server, Address, Addr, or Network Address
SQL SERVER SETTING Data Source, Server, Address, Addr, or Network Address
QR-Code encoder with .net
use visual .net qr development tocompose quick response code on .net
Visual .net qr code 2d barcode reader for .net
Using Barcode reader for .net framework Control to read, scan read, scan image in .net framework applications.
Encrypt Initial FileName, Extended Properties, or AttachDBFileName
Barcode barcode library on .net
Using Barcode scanner for VS .NET Control to read, scan read, scan image in VS .NET applications.
Assign bar code in .net
use .net framework barcode creation torender bar code with .net
OLE DB Services Initial Catalog or Database Integrated Security or Trusted_Connection Max Pool Size Min Pool Size Network Library or Net
Control qr code 2d barcode image with visual c#
using barcode writer for visual .net control to generate, create qr codes image in visual .net applications.
Control qr code size on .net
to add qr barcode and qr code 2d barcode data, size, image with .net barcode sdk
Table 8.3 (continued) DEFAULT 8192 DESCRIPTION Size in bytes of the network packets used to communicate with an instance of SQL Server. When set to false, security-sensitive information, such as the password, is not returned as part of the connection if the connection is open or has ever been in an open state. Resetting the connection string resets all connection string values, including the password. When true, the SQLConnection object is drawn from the appropriate pool, or if necessary is created and added to the appropriate pool. User s password. The SQL Server Mixed Mode login account to use. Local computer name The name of the workstation connecting to SQL Server.
Control denso qr bar code size on vb
qr code jis x 0510 size for vb.net
Receive code-39 on .net
use visual studio .net ansi/aim code 39 printer toprint code 39 extended for .net
Persist Security Info or PersistSecurityInfo
.net Framework ean-13 supplement 5 drawer for .net
use visual .net gtin - 13 encoder topaint ean13 with .net
VS .NET pdf417 2d barcode writer with .net
using vs .net toassign pdf417 in asp.net web,windows application
2D Barcode development in .net
generate, create 2d matrix barcode none on .net projects
.net Framework Crystal usps postnet barcode generating on .net
generate, create postnet none for .net projects
Password or Pwd User ID or Uid Workstation ID or Wsid
Code 128 Code Set A printer with .net
using asp.net web pages toattach ansi/aim code 128 for asp.net web,windows application
This connects to the default instance of SQL Server on a computer called remoteComputer using Windows Authentication and connecting to the pubs database.
Control bar code 39 image for office word
using office word toinclude code-39 in asp.net web,windows application
Sql Server Dim cnstr as string = server=remoteComputer; cnstr &= user id=glenn;password=hello;database=pubs
Control code-39 size with office word
to add code 39 and uss code 39 data, size, image with microsoft word barcode sdk
This connects to the default instance of SQL Server on a computer called remoteComputer using a SQL Server account called glenn with a password of hello and connecting to the pubs database.
UCC.EAN - 128 development for visual c#.net
using barcode integrating for .net control to generate, create gtin - 128 image in .net applications.
Sql Server Dim cnstr as string = server=.; Cnstr &= timeout=30; cnstr &= uid=glenn;pwd=hello;database=pubs
This connects to the default instance of SQL Server on the local computer using a SQL Server account called glenn with a password of hello and connecting to the pubs database with a connection timeout of 30 seconds.
Control datamatrix image for office excel
use excel spreadsheets data matrix barcode implement todraw datamatrix for excel spreadsheets
Data Access with ADO.NET
An Asp.net Form Crystal gtin - 12 creator with visual basic.net
use aspx.net crystal ucc - 12 drawer toaccess gtin - 12 for vb.net
Sql Server Dim cnstr as string = server=GJ\PortalSite; cnstr &= integrated security=true;database=portal
None 3 of 9 barcode scanner in none
Using Barcode Control SDK for None Control to generate, create, read, scan barcode image in None applications.
This connects to the PortalSite instance of SQL Server on a computer called GJ using a SQL Server Windows Authentication and connecting to the portal database. Creating, Opening, Closing, and Destroying a Connection In the previous section, many ConnectionString samples were presented. Now it s time to create and open a connection. A connection can be created as follows:
Dim cnstr as string = integrated security=true;database=northwind Dim cn as new SqlConnection(cnstr) cn.Open( ) Do lots of data access here. cn.Close( ) can be reopened and closed here cn.Dispose( ) cn=nothing
The first lines of code create a SqlConnection object using the specified ConnectionString and then open the connection. The ConnectionString could have been assign by using the ConnectionString property of cn as well. After the connection has been opened, many commands may be executed over the connection. When finished, the connection can be closed, disposed, and assigned to nothing. See the accompanying Close versus Dispose sidebar for related details. Exception Handling When working with connection objects, it is usually advisable to place their code into an exception handling routine, since breaks in communication can cause application crashes. The previous code has been modified to reflect changes to handle any error that may occur, as follows:
Dim cn As New SqlConnection() Dim cnstr as string = _ server=asd;integrated security=yes;database=northwind Try cn.ConnectionString = cnstr cn.Open() Try to connect to nonexistent server. lots of data access stuff here Catch ex As SqlException Dim myErrors As SqlErrorCollection = ex.Errors Dim eItem As SqlError For Each eItem In myErrors
Response.Write( _ String.Format( Class: {0}<br> , eItem.Class)) Response.Write( _ String.Format( _ Error #{0}: {1} on line {2}.<br> , _ eItem.Number, eItem.Message, eItem.LineNumber)) Response.Write( _ String.Format( {0} reported Error connecting to {1}<br> , _ eItem.Source, eItem.Server)) Response.Write( _ String.Format( Nothing was written to database.<br> )) Next Catch Throw the previous exception to the caller. Throw Finally cn.Dispose() cn = Nothing End Try
This book will not use the try/catch block in each example to keep focused on the subject at hand. Using a try/catch block is the recommended method of opening a connection and performing data access in a production environment.
In the previous code, the cn had to be declared outside the try block because variables that are declared inside the try block only live within the try block. Since the Finally block needs to access cn, cn s declaration was outside of the try block. When a SqlException takes place, the exception will be caught. There is only one .NET exception for any SQL Server exception, but looping through the Errors collection of the SqlException will reveal more details about the type of SqlErrors that took place. If the exception was not a SqlException, the Exception is simply thrown to the caller. The Finally block of code will execute regardless of whether or not an exception occurred. This is especially important in situations where the exception is being thrown to the caller, because the Finally block will even execute in this case, just prior to throwing the exception to the caller.