Char.IsLower Method (Char)
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Indicates whether the specified Unicode character is categorized as a lowercase letter.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Function IsLower ( _
c As Char _
) As Boolean
public static bool IsLower(
char c
)
Parameters
- c
Type: System.Char
A Unicode character.
Return Value
Type: System.Boolean
true if c is a lowercase letter; otherwise, false.
Remarks
Valid lowercase letters are members of the following category in UnicodeCategory: LowercaseLetter.
Examples
The following example demonstrates IsLower.
Module Example
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
Dim ch As Char
ch = "a"c
outputBlock.Text &= Char.IsLower(ch) & vbCrLf ' Output: "True"
outputBlock.Text += String.Format(Char.IsLower("upperCase", 5)) & vbCrLf ' Output: "False"
End Sub
End Module
using System;
public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
char ch = 'a';
outputBlock.Text += Char.IsLower(ch).ToString() + "\n";
outputBlock.Text += Char.IsLower("upperCase", 5).ToString() + "\n";
}
}
// The example produces the following output:
// True
// False
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.