Data Access with ADO.NET in .NET

Render QR Code in .NET Data Access with ADO.NET
Data Access with ADO.NET
.net Framework qrcode implementation for .net
use .net vs 2010 qr code writer tointegrate qrcode for .net
The SQL Server provider requires parameter names to match the names of the parameters as defined in SQL Server, but the parameters may be created in any order. In either case, the name that is assigned to a parameter object is the name that can be used to access the parameter in the code. For example, to retrieve the value that is currently in the SqlParameter called @CustCount, use the following code:
Denso QR Bar Code barcode library on .net
Using Barcode scanner for .net framework Control to read, scan read, scan image in .net framework applications.
Dim x as integer = cmd.Parameters( @CustCount )
Barcode encoding in .net
generate, create barcode none in .net projects
ExecuteNonQuery Method The execution of the Command is done differently depending on the data being retrieved or modified. The ExecuteNonQuery method is used when a command is not expected to return any rows, such as an update, insert, or delete query. This method returns an integer that represents the quantity of rows that were affected by the operation. The following example executes a store procedure to archive data and returns the quantity of rows that were archived. Notice that the delimiter for the DateTime data types is the pound sign (#).
Barcode recognizer on .net
Using Barcode reader for .net vs 2010 Control to read, scan read, scan image in .net vs 2010 applications.
Connection Dim cn As New SqlConnection() Dim cnstr as string = integrated security=yes;database=northwind cn.ConnectionString = cnstr Command Dim cmd As New SqlCommand() cmd.CommandText = ArchiveOrders cmd.CommandType = CommandType.StoredProcedure cmd.Connection = cn Parameters cmd.Parameters.Add( @ArchiveYear , #1/1/1997#) Execute cn.Open() Dim x As Integer = cmd.ExecuteNonQuery() Do something with x. x contains the quantity of rows that were affected. Cleanup cn.Dispose() cn = Nothing
Control qr codes data with c#
to attach quick response code and qr codes data, size, image with c# barcode sdk
ExecuteScalar Method Many times a query is executed that is expected to return a single row with a single column. In these situations, the results can be treated as a single return value. For example, the following SQL stored procedure returns a single row with a single column.
QR Code 2d Barcode barcode library in .net
using aspx torender qr-code for asp.net web,windows application
8
Control qr code iso/iec18004 size with visual basic.net
qr code iso/iec18004 size in visual basic.net
CREATE PROCEDURE dbo.OrderCount ( @CustomerID nvarchar(5) ) AS Select count(*) from orders where customerID = @CustomerID RETURN
Barcode integration on .net
using barcode encoding for .net vs 2010 control to generate, create barcode image in .net vs 2010 applications.
Using the ExecuteScalar method, the count can be retrieved into a variable as follows:
PDF-417 2d Barcode drawer with .net
use .net vs 2010 pdf417 2d barcode encoder toaccess pdf-417 2d barcode with .net
Connection Dim cn As New SqlConnection() Dim cnstr as string = integrated security=yes;database=northwind cn.ConnectionString = cnstr Command Dim cmd As New SqlCommand() cmd.CommandText = ArchiveOrders cmd.CommandType = CommandType.StoredProcedure cmd.Connection = cn Parameters cmd.Parameters.Add( @CustomerID , AROUT ) Execute cn.Open() Dim x As Integer = cmd.ExecuteScalar() do something with x x contains the count of orders for Cleanup cn.Dispose() cn = Nothing
QR Code JIS X 0510 barcode library for .net
using .net vs 2010 toaccess denso qr bar code with asp.net web,windows application
ExecuteReader Method The ExecuteReader method returns a DataReader instance. The following code is an example of the ExecuteReader method. See the DataReader section later in this chapter for more information.
.net Vs 2010 Crystal barcode encoder in .net
generate, create bar code none in .net projects
Connection Dim cn As New SqlConnection() Dim cnstr as string = integrated security=yes;database=northwind cn.ConnectionString = cnstr Command Dim cmd As New SqlCommand() cmd.CommandText = CustOrderHist cmd.CommandType = CommandType.StoredProcedure cmd.Connection = cn Parameters cmd.Parameters.Add( @CustomerID , AROUT ) Execute
EAN-8 Supplement 5 Add-On barcode library with .net
use .net framework crystal gs1 - 8 generating tocreate ean-8 supplement 2 add-on in .net
Data Access with ADO.NET
Control ean-13 data in vb.net
to add european article number 13 and ean-13 supplement 5 data, size, image with visual basic.net barcode sdk
cn.Open() Dim dr As SqlDataReader = cmd.ExecuteReader() While (dr.Read()) Response.Write(dr( ProductName ) & - _ & dr( Total ).ToString() & <br> ) End While Cleanup dr.Close() cn.Dispose() cn = Nothing
2d Matrix Barcode maker for java
generate, create matrix barcode none with java projects
ExecuteXmlReader Method The ExecuteXmlReader returns a XmlReader instance. The following code is an example of the ExecuteXmlReader method. See the XmlReader section in 9, Working with XML Data for more information.
Barcode Pdf417 creator for office excel
generate, create pdf417 none with office excel projects
Connection Dim cn As New SqlConnection() Dim cnstr as string = integrated security=yes;database=northwind cn.ConnectionString = cnstr Command Dim cmd As New SqlCommand() cmd.CommandText = Select * from customers for xml auto cmd.Connection = cn Execute cn.Open() Dim dr As XmlReader = cmd.ExecuteXmlReader() While (dr.Read()) Response.Write(dr( CustomerID ) & - _ & dr( CompanyName ) & <br> ) End While Cleanup dr.Close() cn.Dispose() cn = Nothing
Control gtin - 128 image with word
using barcode integration for word control to generate, create uss-128 image in word applications.
DataReader
Display pdf417 on vb.net
using .net windows forms crystal toencode barcode pdf417 in asp.net web,windows application
The DataReader is used to retrieve connected data from the server. The DataReader requires a command and connection (see Figure 8.1). The DataReader returns a forward-only, read-only data stream from a data source. This stream represents the fastest way to retrieve data, but has the least functionality. The DataReader object cannot be created using the New key word. To create a DataReader, use the ExecuteReader method of the Command object. The following code is an example of the DataReader.
Word ean128 creation for word
use microsoft word ucc-128 implementation togenerate ucc ean 128 with microsoft word
QR Code barcode library for vb
generate, create qr code 2d barcode none for visual basic projects