c# create data matrix Figure 18-4. Sign extension in signed conversions in C#

Encoding Data Matrix ECC200 in C# Figure 18-4. Sign extension in signed conversions

Figure 18-4. Sign extension in signed conversions
Make Data Matrix 2d Barcode In Visual C#.NET
Using Barcode drawer for .NET Control to generate, create Data Matrix 2d barcode image in VS .NET applications.
www.OnBarcode.com
Scanning Data Matrix 2d Barcode In Visual C#.NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
CHAPTER 18 CONVERSIONS
Code 39 Extended Maker In C#
Using Barcode generator for Visual Studio .NET Control to generate, create ANSI/AIM Code 39 image in .NET framework applications.
www.OnBarcode.com
Code 128 Code Set C Maker In Visual C#.NET
Using Barcode encoder for VS .NET Control to generate, create Code 128 Code Set B image in .NET applications.
www.OnBarcode.com
Explicit Conversions and Casting
Encode Barcode In Visual C#
Using Barcode generation for VS .NET Control to generate, create Barcode image in VS .NET applications.
www.OnBarcode.com
Draw GS1-128 In C#
Using Barcode printer for .NET Control to generate, create UCC-128 image in Visual Studio .NET applications.
www.OnBarcode.com
When converting from a shorter type to a longer type, it is easy for the longer type to hold all the bits of the shorter type. In other situations, however, the target type might not be able to accommodate the source value without loss of data. For example, suppose you want to convert a ushort value to a byte. A ushort can hold any value between 0 and 65,535. A byte can only hold a value between 0 and 255. As long as the ushort value you want to convert is less than 256, there won t be any loss of data. If it is greater, however, the most significant bits will be lost. For example, Figure 18-5 shows an attempt to convert a ushort with a value of 1,365 to a byte, resulting in a loss of data.
Paint QR Code ISO/IEC18004 In C#
Using Barcode generator for Visual Studio .NET Control to generate, create QR-Code image in VS .NET applications.
www.OnBarcode.com
EAN 8 Maker In C#.NET
Using Barcode printer for .NET framework Control to generate, create EAN8 image in .NET framework applications.
www.OnBarcode.com
Figure 18-5. Attempting to convert a ushort to a byte Clearly, only a relatively small number (0.4 percent) of the possible unsigned 16-bit ushort values can be safely converted to an unsigned 8-bit byte type without loss of data. The rest result in data overflow, yielding a different value.
Encoding Data Matrix ECC200 In Java
Using Barcode generator for Java Control to generate, create ECC200 image in Java applications.
www.OnBarcode.com
Data Matrix ECC200 Scanner In Visual C#.NET
Using Barcode scanner for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Casting
Barcode Printer In VS .NET
Using Barcode encoder for Reporting Service Control to generate, create Barcode image in Reporting Service applications.
www.OnBarcode.com
Barcode Maker In Java
Using Barcode printer for Java Control to generate, create Barcode image in Java applications.
www.OnBarcode.com
For the predefined types, C# will automatically convert from one data type to another but only between those types for which there is no possibility of data loss between the source type and the target type. That is, the language does not provide automatic conversion between two types if there is any value of the source type that would lose data if it were converted to the target type. If you want to make a conversion of this type, it must be an explicit conversion, using a cast expression.
Barcode Maker In None
Using Barcode generator for Software Control to generate, create Barcode image in Software applications.
www.OnBarcode.com
Drawing EAN128 In VS .NET
Using Barcode generator for Reporting Service Control to generate, create GS1-128 image in Reporting Service applications.
www.OnBarcode.com
CHAPTER 18 CONVERSIONS
Code 3/9 Generation In None
Using Barcode encoder for Microsoft Excel Control to generate, create Code-39 image in Microsoft Excel applications.
www.OnBarcode.com
Encode Code 128 Code Set B In VS .NET
Using Barcode maker for Reporting Service Control to generate, create Code 128B image in Reporting Service applications.
www.OnBarcode.com
The following code shows an example of a cast expression. It converts the value of Var1 to type sbyte. A cast expression consists of A set of matching parentheses containing the name of the target type The source expression, following the parentheses Target type ( sbyte ) Var1; Source expression In using a cast expression, you are explicitly taking responsibility for performing the operation that might lose data. Essentially, you are saying, In spite of the possibility of data loss, I know what I m doing, so make this conversion anyway. (Make sure, however, that you do know what you re doing.) For example, Figure 18-6 shows cast expressions converting two values of type ushort to type byte. In the first case, there is no loss of data. In the second case, the most significant bits are lost, giving a value of 85 which is clearly not equivalent to the source value, 1,365.
Data Matrix 2d Barcode Scanner In Visual C#.NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
QR Code JIS X 0510 Generation In Objective-C
Using Barcode maker for iPad Control to generate, create QR Code JIS X 0510 image in iPad applications.
www.OnBarcode.com
Figure 18-6. Casting a ushort to a byte The output of the code in the figure is the following: sb: 10 = 0xA sb: 85 = 0x55
EAN13 Reader In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Recognizing EAN 128 In Visual C#.NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
CHAPTER 18 CONVERSIONS
Types of Conversions
There are a number of standard, predefined conversions for the numeric and reference types. The categories are illustrated in Figure 18-7. Beyond the standard conversions, you can also define both implicit and explicit conversions for your user-defined types. There is also a predefined type of conversion called boxing, which converts any value type to either Type object Type System.ValueType Unboxing converts a boxed value back to its original type.
Figure 18-7. Types of conversions
Numeric Conversions
Any numeric type can be converted into any other numeric type, as illustrated in Figure 18-8. Some of the conversions are implicit conversions, and others are explicit.
Figure 18-8. Numeric conversions
CHAPTER 18 CONVERSIONS
Implicit Numeric Conversions
The implicit numeric conversions are shown in Figure 18-9. There is an implicit conversion from the source type to the target type if there is a path, following the arrows, from the source type to the destination type. Any numeric conversion for which there is not a path following the arrows from the source type to the destination type must be an explicit conversion. The figure demonstrates that, as you would expect, there is an implicit conversion between numeric types that occupy fewer bits to those that occupy more bits.
Copyright © OnBarcode.com . All rights reserved.