Conversion Classes
You can convert one data type to another type using the Convert class. The
Convert class has a number of static methods, beginning with To and ending with
the target data type for example, ToInt32 or ToByte. If successful, the
returned instance is an object of the target data type. Not all Strings and
Arrays 645 conversions will be possible when using the Convert method, so use a
try-catch block if you think you may get uncertain results.
Example of Convert Class:
Imports System.Collections.Generic
Imports
System.Linq
Imports
System.Text
Module ConversionClass
Sub Main()
Dim intExample As Int32
= 19
' the methods inside convert
Console.WriteLine("Convert.ToString,
result = {0}", Convert.ToString(intExample))
Console.WriteLine("Convert.ToBoolean,
result = {0}", Convert.ToBoolean(intExample))
'displays True
Console.WriteLine("Convert.ToByte,
result = {0}", Convert.ToByte(intExample))
Console.WriteLine("Convert.ToChar,
result = {0}", Convert.ToChar(intExample))
Console.WriteLine("Convert.ToDouble,
result = {0}", Convert.ToDouble(intExample))
Console.ReadLine()
End Sub
End Module
Output
If you want to convert strings into dates, you can use the Parse method for the
DateTime data type or you can use the ToDateTime method. Both achieve the same
objective. Because users sometimes incorrectly enter dates, don't forget to
include appropriate exception handling to make sure that any conversion errors
are caught. If you want to provide more control over parsing a date, use the
ParseExact method.
CultureInfo Class
As shown in below example, the CultureInfo class contains cultural information
like DisplayName, Calendar, and various official abbreviations.
Example of CultureInfo Class:
Imports
System.Collections.Generic
Imports
System.Linq
Imports
System.Text
Imports
System.Globalization
Module ConversionClass
Sub Main()
Dim c As New CultureInfo("tr")
Console.WriteLine("The
CultureInfo is set to: {0}", c.DisplayName)
Console.WriteLine("The
parent culture is: {0}", c.Parent.DisplayName)
Console.WriteLine("The
three leter ISO language name is: {0}",
c.ThreeLetterISOLanguageName)
Console.WriteLine("The
default calendar for this culture is: {0}" & vbLf & vbLf,
c.Calendar.ToString())
Console.ReadLine()
End Sub
End Module
Output
As demonstrated in below example, the RegionInfo class contains regional
information, including DisplayName, currency information, and official
abbreviations. RegionInfo also contains a static property to retrieve the
CurrentRegion.
Example of RegionInfo Class:
Imports
System.Collections.Generic
Imports
System.Linq
Imports
System.Text
Imports
System.Globalization
Module ConversionClass
Sub Main()
Dim r As New RegionInfo("tr")
Console.WriteLine("The
name of this region is: {0}", r.Name)
Console.WriteLine("The
currency symbol for the region is: {0}", r.CurrencySymbol)
Console.WriteLine("Is
this region metric : {0} " & vbLf & vbLf, r.IsMetric)
Console.ReadLine()
End Sub
End Module
Output
Conclusion
Hope this article would have helped you in understanding the Conversion Classes
& CultureInfo Class in VB.NET