KeysConverter Class

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Important

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Provides a TypeConverter to convert Keys objects to and from other representations.

public ref class KeysConverter : System::ComponentModel::TypeConverter, System::Collections::IComparer

public class KeysConverter : System.ComponentModel.TypeConverter, System.Collections.IComparer

type KeysConverter = class
    inherit TypeConverter
    interface IComparer

Public Class KeysConverter
Inherits TypeConverter
Implements IComparer

Inheritance: Object

TypeConverter
KeysConverter

Implements: IComparer

Examples

The following code example demonstrates how to use the KeysConverter class to convert a KeyCode to a String. This example assumes that you have a TextBox named TextBox1 on a Form named Form1.

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.KeyPressWork);
        this.textBox1.KeyDown += new System.Windows.Forms.KeyEventHandler(this.KeyDownWork);
    }

    private void KeyDownWork(object sender, KeyEventArgs e)
    {
        MessageBox.Show(e.KeyCode.ToString(), "KeyDown");

        KeysConverter kc = new KeysConverter();
        MessageBox.Show(kc.ConvertToString(e.KeyCode), "KeyDown");
    }

    private void KeyPressWork(object sender, KeyPressEventArgs e)
    {
        MessageBox.Show(e.KeyChar.ToString(), "KeyPress");
    }
}

Public Class Form1

    Private Sub KeyDownWork(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) _
        Handles TextBox1.KeyDown

        MessageBox.Show(e.KeyCode, "KeyDown")

        MessageBox.Show(e.KeyCode.ToString(), "KeyDown")

        Dim kc As KeysConverter = New KeysConverter()
        MessageBox.Show(kc.ConvertToString(e.KeyCode), "KeyDown")
    End Sub


    Private Sub KeyPressWork(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) _
        Handles TextBox1.KeyPress

        MessageBox.Show(e.KeyChar, "KeyPress")
        MessageBox.Show(e.KeyChar.ToString(), "KeyPress")
    End Sub
End Class

Remarks

Most commonly, the KeysConverter type converter is used to convert Keys instances to and from their corresponding localized String representations.

Constructors

KeysConverter()

Initializes an instance of the KeysConverter class.

Methods

CanConvertFrom(ITypeDescriptorContext, Type)	Returns a value indicating whether this converter can convert an object in the specified source type to the native type of the converter using the specified context.
CanConvertFrom(Type)	Returns whether this converter can convert an object of the given type to the type of this converter. (Inherited from TypeConverter)
CanConvertTo(ITypeDescriptorContext, Type)	Returns a value indicating whether this converter can convert an object in the specified source type to the native type of the converter using the specified context.
CanConvertTo(ITypeDescriptorContext, Type)	Returns whether this converter can convert the object to the specified type, using the specified context. (Inherited from TypeConverter)
CanConvertTo(Type)	Returns whether this converter can convert the object to the specified type. (Inherited from TypeConverter)
Compare(Object, Object)	Compares two key values for equivalence.
ConvertFrom(ITypeDescriptorContext, CultureInfo, Object)	Converts the specified object to the converter's native type.
ConvertFrom(Object)	Converts the given value to the type of this converter. (Inherited from TypeConverter)
ConvertFromInvariantString(ITypeDescriptorContext, String)	Converts the given string to the type of this converter, using the invariant culture and the specified context. (Inherited from TypeConverter)
ConvertFromInvariantString(String)	Converts the given string to the type of this converter, using the invariant culture. (Inherited from TypeConverter)
ConvertFromString(ITypeDescriptorContext, CultureInfo, String)	Converts the given text to an object, using the specified context and culture information. (Inherited from TypeConverter)
ConvertFromString(ITypeDescriptorContext, String)	Converts the given text to an object, using the specified context. (Inherited from TypeConverter)
ConvertFromString(String)	Converts the specified text to an object. (Inherited from TypeConverter)
ConvertTo(ITypeDescriptorContext, CultureInfo, Object, Type)	Converts the specified object to the specified destination type.
ConvertTo(Object, Type)	Converts the given value object to the specified type, using the arguments. (Inherited from TypeConverter)
ConvertToInvariantString(ITypeDescriptorContext, Object)	Converts the specified value to a culture-invariant string representation, using the specified context. (Inherited from TypeConverter)
ConvertToInvariantString(Object)	Converts the specified value to a culture-invariant string representation. (Inherited from TypeConverter)
ConvertToString(ITypeDescriptorContext, CultureInfo, Object)	Converts the given value to a string representation, using the specified context and culture information. (Inherited from TypeConverter)
ConvertToString(ITypeDescriptorContext, Object)	Converts the given value to a string representation, using the given context. (Inherited from TypeConverter)
ConvertToString(Object)	Converts the specified value to a string representation. (Inherited from TypeConverter)
CreateInstance(IDictionary)	Re-creates an Object given a set of property values for the object. (Inherited from TypeConverter)
CreateInstance(ITypeDescriptorContext, IDictionary)	Creates an instance of the type that this TypeConverter is associated with, using the specified context, given a set of property values for the object. (Inherited from TypeConverter)
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetConvertFromException(Object)	Returns an exception to throw when a conversion cannot be performed. (Inherited from TypeConverter)
GetConvertToException(Object, Type)	Returns an exception to throw when a conversion cannot be performed. (Inherited from TypeConverter)
GetCreateInstanceSupported()	Returns whether changing a value on this object requires a call to the CreateInstance(IDictionary) method to create a new value. (Inherited from TypeConverter)
GetCreateInstanceSupported(ITypeDescriptorContext)	Returns whether changing a value on this object requires a call to CreateInstance(IDictionary) to create a new value, using the specified context. (Inherited from TypeConverter)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetProperties(ITypeDescriptorContext, Object)	Returns a collection of properties for the type of array specified by the value parameter, using the specified context. (Inherited from TypeConverter)
GetProperties(ITypeDescriptorContext, Object, Attribute[])	Returns a collection of properties for the type of array specified by the value parameter, using the specified context and attributes. (Inherited from TypeConverter)
GetProperties(Object)	Returns a collection of properties for the type of array specified by the value parameter. (Inherited from TypeConverter)
GetPropertiesSupported()	Returns whether this object supports properties. (Inherited from TypeConverter)
GetPropertiesSupported(ITypeDescriptorContext)	Returns whether this object supports properties, using the specified context. (Inherited from TypeConverter)
GetStandardValues()	Returns a collection of standard values from the default context for the data type this type converter is designed for. (Inherited from TypeConverter)
GetStandardValues(ITypeDescriptorContext)	Returns a collection of standard values for the data type that this type converter is designed for when provided with a format context.
GetStandardValuesExclusive()	Returns whether the collection of standard values returned from GetStandardValues() is an exclusive list. (Inherited from TypeConverter)
GetStandardValuesExclusive(ITypeDescriptorContext)	Determines if the list of standard values returned from `GetStandardValues` is an exclusive list using the specified ITypeDescriptorContext.
GetStandardValuesSupported()	Returns whether this object supports a standard set of values that can be picked from a list. (Inherited from TypeConverter)
GetStandardValuesSupported(ITypeDescriptorContext)	Gets a value indicating whether this object supports a standard set of values that can be picked from a list.
GetType()	Gets the Type of the current instance. (Inherited from Object)
IsValid(ITypeDescriptorContext, Object)	Returns whether the given value object is valid for this type and for the specified context. (Inherited from TypeConverter)
IsValid(Object)	Returns whether the given value object is valid for this type. (Inherited from TypeConverter)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
SortProperties(PropertyDescriptorCollection, String[])	Sorts a collection of properties. (Inherited from TypeConverter)
ToString()	Returns a string that represents the current object. (Inherited from Object)

Applies to

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