KeysConverter 类

定义

提供将 TypeConverter 对象与其他表示形式之间相互转换的 KeysProvides 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
继承
KeysConverter
实现

示例

下面的代码示例演示如何使用 KeysConverter 类将 KeyCode 转换为 StringThe following code example demonstrates how to use the KeysConverter class to convert a KeyCode to a String. 此示例假定在名为 Form1Form 上有一个名为 TextBox1TextBoxThis 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

注解

最常见的情况是,使用 KeysConverter 类型转换器将 Keys 实例与它们相应的本地化 String 表示形式相互转换。Most commonly, the KeysConverter type converter is used to convert Keys instances to and from their corresponding localized String representations.

构造函数

KeysConverter()

初始化 KeysConverter 类的实例。Initializes an instance of the KeysConverter class.

方法

CanConvertFrom(ITypeDescriptorContext, Type)

使用指定的上下文获取一个值,该值指示转换器是否可将指定源类型的对象转换为转换器的本机类型。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)

返回该转换器是否可以将给定类型的对象转换为此转换器的类型。Returns whether this converter can convert an object of the given type to the type of this converter.

(继承自 TypeConverter)
CanConvertTo(ITypeDescriptorContext, Type)

使用指定的上下文获取一个值,该值指示转换器是否可将指定源类型的对象转换为转换器的本机类型。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(Type)

返回此转换器是否可将该对象转换为指定的类型。Returns whether this converter can convert the object to the specified type.

(继承自 TypeConverter)
Compare(Object, Object)

比较两个键值以确定它们是否相效。Compares two key values for equivalence.

ConvertFrom(ITypeDescriptorContext, CultureInfo, Object)

将指定对象转换为转换器的本机类型。Converts the specified object to the converter's native type.

ConvertFrom(Object)

将给定值转换为此转换器的类型。Converts the given value to the type of this converter.

(继承自 TypeConverter)
ConvertFromInvariantString(ITypeDescriptorContext, String)

使用不变区域性和指定上下文将给定字符串转换为此转换器的类型。Converts the given string to the type of this converter, using the invariant culture and the specified context.

(继承自 TypeConverter)
ConvertFromInvariantString(String)

使用不变区域性将给定字符串转换为此转换器的类型。Converts the given string to the type of this converter, using the invariant culture.

(继承自 TypeConverter)
ConvertFromString(ITypeDescriptorContext, CultureInfo, String)

使用指定的上下文和区域性信息将给定的文本转换为对象。Converts the given text to an object, using the specified context and culture information.

(继承自 TypeConverter)
ConvertFromString(ITypeDescriptorContext, String)

使用指定的上下文将给定的文本转换为对象。Converts the given text to an object, using the specified context.

(继承自 TypeConverter)
ConvertFromString(String)

将指定文本转换为对象。Converts the specified text to an object.

(继承自 TypeConverter)
ConvertTo(ITypeDescriptorContext, CultureInfo, Object, Type)

将指定对象转换为指定目标类型。Converts the specified object to the specified destination type.

ConvertTo(Object, Type)

使用参数将给定的值对象转换为指定的类型。Converts the given value object to the specified type, using the arguments.

(继承自 TypeConverter)
ConvertToInvariantString(ITypeDescriptorContext, Object)

使用指定的上下文将指定的值转换为区域性不变的字符串表示形式。Converts the specified value to a culture-invariant string representation, using the specified context.

(继承自 TypeConverter)
ConvertToInvariantString(Object)

将指定值转换为区域性不变的字符串表示形式。Converts the specified value to a culture-invariant string representation.

(继承自 TypeConverter)
ConvertToString(ITypeDescriptorContext, CultureInfo, Object)

使用指定的上下文和区域性信息将给定的值转换为字符串表示形式。Converts the given value to a string representation, using the specified context and culture information.

(继承自 TypeConverter)
ConvertToString(ITypeDescriptorContext, Object)

使用给定的上下文将给定的值转换为字符串表示形式。Converts the given value to a string representation, using the given context.

(继承自 TypeConverter)
ConvertToString(Object)

将指定值转换为字符串表示形式。Converts the specified value to a string representation.

(继承自 TypeConverter)
CreateInstance(IDictionary)

在给定 Object 的一组属性值的情况下重新创建该对象。Re-creates an Object given a set of property values for the object.

(继承自 TypeConverter)
CreateInstance(ITypeDescriptorContext, IDictionary)

给定该对象的一组属性值,使用指定上下文创建与此 TypeConverter 相关联的类型的实例。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.

(继承自 TypeConverter)
Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
GetConvertFromException(Object)

返回当转换无法执行时所引发的异常。Returns an exception to throw when a conversion cannot be performed.

(继承自 TypeConverter)
GetConvertToException(Object, Type)

返回当转换无法执行时所引发的异常。Returns an exception to throw when a conversion cannot be performed.

(继承自 TypeConverter)
GetCreateInstanceSupported()

返回更改此对象的值是否求调用 CreateInstance(IDictionary) 方法来创建新值。Returns whether changing a value on this object requires a call to the CreateInstance(IDictionary) method to create a new value.

(继承自 TypeConverter)
GetCreateInstanceSupported(ITypeDescriptorContext)

返回一个结果,即更改此对象上的某个值是否需要调用 CreateInstance(IDictionary) 以使用指定的上下文创建新值。Returns whether changing a value on this object requires a call to CreateInstance(IDictionary) to create a new value, using the specified context.

(继承自 TypeConverter)
GetHashCode()

用作默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetProperties(ITypeDescriptorContext, Object)

使用指定的上下文返回值参数指定的数组类型的属性的集合。Returns a collection of properties for the type of array specified by the value parameter, using the specified context.

(继承自 TypeConverter)
GetProperties(ITypeDescriptorContext, Object, Attribute[])

使用指定的上下文和特性返回由该值参数指定的数组类型的属性集合。Returns a collection of properties for the type of array specified by the value parameter, using the specified context and attributes.

(继承自 TypeConverter)
GetProperties(Object)

返回由值参数指定的数组类型的属性集合。Returns a collection of properties for the type of array specified by the value parameter.

(继承自 TypeConverter)
GetPropertiesSupported()

返回此对象是否支持属性。Returns whether this object supports properties.

(继承自 TypeConverter)
GetPropertiesSupported(ITypeDescriptorContext)

通过使用指定的上下文,返回此对象是否支持属性。Returns whether this object supports properties, using the specified context.

(继承自 TypeConverter)
GetStandardValues()

从默认的上下文返回此类型转换器设计用于的数据类型的标准值集合。Returns a collection of standard values from the default context for the data type this type converter is designed for.

(继承自 TypeConverter)
GetStandardValues(ITypeDescriptorContext)

如果提供格式上下文,则返回适用于此类型转换器的数据类型的标准值集合。Returns a collection of standard values for the data type that this type converter is designed for when provided with a format context.

GetStandardValuesExclusive()

返回从 GetStandardValues() 返回的标准值的集合是否为独占列表。Returns whether the collection of standard values returned from GetStandardValues() is an exclusive list.

(继承自 TypeConverter)
GetStandardValuesExclusive(ITypeDescriptorContext)

确定从 GetStandardValues 返回的标准值列表是否是使用指定的 ITypeDescriptorContext 的独占列表。Determines if the list of standard values returned from GetStandardValues is an exclusive list using the specified ITypeDescriptorContext.

GetStandardValuesSupported()

返回此对象是否支持可以从列表中选取的值的标准集。Returns whether this object supports a standard set of values that can be picked from a list.

(继承自 TypeConverter)
GetStandardValuesSupported(ITypeDescriptorContext)

获取一个值,该值指示此对象是否支持可从列表中选取的标准值集。Gets a value indicating whether this object supports a standard set of values that can be picked from a list.

GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
IsValid(ITypeDescriptorContext, Object)

返回给定的值对象是否对此类型和对指定的上下文有效。Returns whether the given value object is valid for this type and for the specified context.

(继承自 TypeConverter)
IsValid(Object)

返回给定值对象对于此类型是否有效。Returns whether the given value object is valid for this type.

(继承自 TypeConverter)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
SortProperties(PropertyDescriptorCollection, String[])

对属性的集合进行排序。Sorts a collection of properties.

(继承自 TypeConverter)
ToString()

返回一个表示当前对象的 string。Returns a string that represents the current object.

(继承自 Object)

适用于

另请参阅