c# generate barcode from string MemoryStream Properties in Visual C#

Drawer Quick Response Code in Visual C# MemoryStream Properties

2
Creating QR Code JIS X 0510 In C#.NET
Using Barcode printer for .NET Control to generate, create QR Code image in .NET framework applications.
www.OnBarcode.com
Quick Response Code Scanner In Visual C#
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Input/Output (I/O)
Barcode Maker In Visual C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Barcode Reader In Visual C#.NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Table 2-26 MemoryStream Properties
QR Generation In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create QR Code JIS X 0510 image in ASP.NET applications.
www.OnBarcode.com
Denso QR Bar Code Maker In .NET
Using Barcode maker for .NET framework Control to generate, create Quick Response Code image in .NET framework applications.
www.OnBarcode.com
Name Length Position
Generate QR-Code In VB.NET
Using Barcode creator for .NET framework Control to generate, create Quick Response Code image in .NET framework applications.
www.OnBarcode.com
Data Matrix Maker In C#.NET
Using Barcode encoder for .NET Control to generate, create DataMatrix image in .NET framework applications.
www.OnBarcode.com
Description Gets the length (in bytes) of the stream. (Inherited from the Stream class.) Gets or sets the virtual cursor for determining where in the stream the current position is. The value of Position cannot be greater than the stream s length. (Inherited from the Stream class.) Gets or sets the stream s timeout for read operations. (Inherited from the Stream class.) Gets or sets the stream s timeout for write operations. (Inherited from the Stream class.)
Generating GS1 - 13 In C#.NET
Using Barcode maker for Visual Studio .NET Control to generate, create EAN-13 image in VS .NET applications.
www.OnBarcode.com
Printing 1D Barcode In Visual C#
Using Barcode generation for .NET framework Control to generate, create 1D image in .NET framework applications.
www.OnBarcode.com
ReadTimeout WriteTimeout
Paint Code-39 In Visual C#
Using Barcode generator for Visual Studio .NET Control to generate, create Code-39 image in .NET framework applications.
www.OnBarcode.com
Making Postnet 3 Of 5 In Visual C#.NET
Using Barcode generation for Visual Studio .NET Control to generate, create USPS POSTal Numeric Encoding Technique Barcode image in .NET applications.
www.OnBarcode.com
Table 2-27 MemoryStream Methods
Bar Code Decoder In C#.NET
Using Barcode Control SDK for Visual Studio .NET Control to generate, create, read, scan barcode image in VS .NET applications.
www.OnBarcode.com
Linear Creator In Visual Basic .NET
Using Barcode printer for VS .NET Control to generate, create Linear 1D Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Name Close Flush
Creating QR Code JIS X 0510 In .NET Framework
Using Barcode encoder for Reporting Service Control to generate, create QR Code image in Reporting Service applications.
www.OnBarcode.com
Encoding Linear Barcode In Java
Using Barcode encoder for Java Control to generate, create Linear Barcode image in Java applications.
www.OnBarcode.com
Description Closes the stream and releases any resources associated with it. (Inherited from the Stream class.) Clears any buffers within the stream and forces changes to be written to the underlying system or device. (Inherited from the Stream class.) Retrieves the array of unsigned bytes that were used to create the stream. Performs a sequential read of a specified number of bytes from the current position and updates the position to the end of the read upon completion of the operation. (Inherited from the Stream class.) Performs the read of a single byte and updates the position by moving it by one. Identical to calling Read to read a single byte. (Inherited from the Stream class.) Sets the position within the stream. (Inherited from the Stream class.) Specifies the length of the stream. This method will truncate the stream if the new length is less than the old length and will expand the stream if the reverse is true. (Inherited from the Stream class.)
Create GS1-128 In None
Using Barcode drawer for Online Control to generate, create GS1 128 image in Online applications.
www.OnBarcode.com
Read Code 39 Extended In C#
Using Barcode scanner for .NET framework Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
GetBuffer Read
Painting Code 39 Extended In .NET
Using Barcode maker for Reporting Service Control to generate, create Code 3 of 9 image in Reporting Service applications.
www.OnBarcode.com
Generating Bar Code In .NET
Using Barcode generator for Visual Studio .NET Control to generate, create bar code image in VS .NET applications.
www.OnBarcode.com
ReadByte
Seek SetLength
Lesson 2: Reading and Writing Files
Table 2-27 MemoryStream Methods
Name ToArray Write
Description Writes the entire stream to an array of bytes. Writes information to the stream as a number of bytes and updates the current position to reflect the new write position. (Inherited from the Stream class.) Writes a single byte to the stream and updates the position. This method is identical to calling Write with a single byte. (Inherited from the Stream class.) Writes the MemoryStream to another stream.
WriteByte
WriteTo
How to Use a MemoryStream
As you have seen, working with streams of data is an important skill for any developer. Unfortunately, often you will need to create a stream before you really need to store it somewhere (like in a file). The MemoryStream class has the job of helping you create streams in memory. Creating a memory stream is as simple as creating a new instance of the MemoryStream class:
' VB Dim memStrm As New MemoryStream() // C# MemoryStream memStrm = new MemoryStream();
You can use the StreamWriter exactly as you used the FileStream class earlier to write data to your new MemoryStream:
' VB Dim writer As New StreamWriter(memStrm) writer.WriteLine("Hello") writer.WriteLine("Goodbye") // C# StreamWriter writer = new StreamWriter(memStrm); writer.WriteLine("Hello"); writer.WriteLine("Goodbye");
Now that you have data in your MemoryStream object, what do you do with it The designers of the MemoryStream class understand that storing the stream in memory is usually a temporary situation. So the class supports writing the stream directly to another stream or copying the data to other storage. One common use of a MemoryStream is to limit the time a file is open for writing (because that locks the file). So to
2
Input/Output (I/O)
continue this running example, you can tell the MemoryStream to write to a FileStream, as shown here:
' VB ' Force the writer to push the data into the ' underlying stream writer.Flush() ' Create a file stream Dim theFile As FileStream = File.Create("c:\inmemory.txt") ' Write the entire Memory stream to the file memStrm.WriteTo(theFile) ' Clean up writer.Close() theFile.Close() memStrm.Close() // C# // Force the writer to push the data into the // underlying stream writer.Flush(); // Create a file stream FileStream theFile = File.Create(@"c:\inmemory.txt"); // Write the entire Memory stream to the file memStrm.WriteTo(theFile); // Clean up writer.Close(); theFile.Close(); memStrm.Close();
As you can see, the code performs these tasks: 1. It tells the StreamWriter to flush its changes to the underlying stream (in this case, the MemoryStream). 2. It creates the new file. 3. It tells the MemoryStream object to write itself to the FileStream object. This process allows you to do time-intensive work in the MemoryStream and then open the file, flush the data to it, and close the file quickly.
Copyright © OnBarcode.com . All rights reserved.