本文整理匯總了C#中System.Activities.AsyncCodeActivity類的典型用法代碼示例。如果您正苦於以下問題：C# AsyncCodeActivity類的具體用法？C# AsyncCodeActivity怎麽用？C# AsyncCodeActivity使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
AsyncCodeActivity類屬於System.Activities命名空間，在下文中一共展示了AsyncCodeActivity類的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: FileWriter
public sealed class FileWriter : AsyncCodeActivity
{
public FileWriter()
: base()
{
}
protected override IAsyncResult BeginExecute(AsyncCodeActivityContext context, AsyncCallback callback, object state)
{
string tempFileName = Path.GetTempFileName();
Console.WriteLine("Writing to file: " + tempFileName);
FileStream file = File.Open(tempFileName, FileMode.Create);
context.UserState = file;
byte[] bytes = UnicodeEncoding.Unicode.GetBytes("123456789");
return file.BeginWrite(bytes, 0, bytes.Length, callback, state);
}
protected override void EndExecute(AsyncCodeActivityContext context, IAsyncResult result)
{
FileStream file = (FileStream)context.UserState;
try
{
file.EndWrite(result);
file.Flush();
}
finally
{
file.Close();
}
}
}