WebBrowserProgressChangedEventArgs WebBrowserProgressChangedEventArgs WebBrowserProgressChangedEventArgs WebBrowserProgressChangedEventArgs Class


ProgressChanged 事件提供数据。Provides data for the ProgressChanged event.

public ref class WebBrowserProgressChangedEventArgs : EventArgs
public class WebBrowserProgressChangedEventArgs : EventArgs
type WebBrowserProgressChangedEventArgs = class
    inherit EventArgs
Public Class WebBrowserProgressChangedEventArgs
Inherits EventArgs


下面的代码示例演示如何使用此类型。The following code example demonstrates the use of this type. 在此示例中, 事件处理程序报告ProgressChanged事件的发生。In the example, an event handler reports on the occurrence of the ProgressChanged event. 此报表可帮助你了解何时发生事件, 并可帮助你进行调试。This report helps you to learn when the event occurs and can assist you in debugging. 若要报告多个事件或频繁发生的事件, 请考虑ShowConsole.WriteLine消息替换为多行或将TextBox其追加到多行。To report on multiple events or on events that occur frequently, consider replacing Show with Console.WriteLine or appending the message to a multiline TextBox.

若要运行示例代码, 请将其粘贴到包含名为WebBrowser WebBrowser1的类型的实例的项目中。To run the example code, paste it into a project that contains an instance of type WebBrowser named WebBrowser1. 然后, 确保事件处理程序与ProgressChanged事件相关联。Then ensure that the event handler is associated with the ProgressChanged event.

private void WebBrowser1_ProgressChanged(Object sender, WebBrowserProgressChangedEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "CurrentProgress", e.CurrentProgress );
messageBoxCS.AppendFormat("{0} = {1}", "MaximumProgress", e.MaximumProgress );
MessageBox.Show(messageBoxCS.ToString(), "ProgressChanged Event" );
Private Sub WebBrowser1_ProgressChanged(sender as Object, e as WebBrowserProgressChangedEventArgs) _ 
     Handles WebBrowser1.ProgressChanged

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "CurrentProgress", e.CurrentProgress)
    messageBoxVB.AppendFormat("{0} = {1}", "MaximumProgress", e.MaximumProgress)
    MessageBox.Show(messageBoxVB.ToString(),"ProgressChanged Event")

End Sub


您可以处理WebBrowser.ProgressChanged事件, 以便在 Internet Explorer 中为WebBrowser控件实现导航进度栏, 这类似于 Internet Explorer。You can handle the WebBrowser.ProgressChanged event to implement a navigation progress bar for the WebBrowser control similar to the one in Internet Explorer. CurrentProgress使用属性来确定已成功下载的字节数。Use the CurrentProgress property to determine the number of bytes that have been downloaded successfully. MaximumProgress使用属性可确定可供下载的字节数。Use the MaximumProgress property to determine the number of bytes available for downloading.


WebBrowserProgressChangedEventArgs(Int64, Int64) WebBrowserProgressChangedEventArgs(Int64, Int64) WebBrowserProgressChangedEventArgs(Int64, Int64) WebBrowserProgressChangedEventArgs(Int64, Int64)

初始化 WebBrowserProgressChangedEventArgs 类的新实例。Initializes a new instance of the WebBrowserProgressChangedEventArgs class.


CurrentProgress CurrentProgress CurrentProgress CurrentProgress

获取已下载的字节数。Gets the number of bytes that have been downloaded.

MaximumProgress MaximumProgress MaximumProgress MaximumProgress

获取正在加载的文档中的总字节数。Gets the total number of bytes in the document being loaded.


Equals(Object) Equals(Object) Equals(Object) 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.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

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

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

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

(Inherited from Object)
ToString() ToString() ToString() ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from Object)