本文整理汇总了VB.NET中System.IO.StreamReader.ReadAsync方法的典型用法代码示例。如果您正苦于以下问题：VB.NET StreamReader.ReadAsync方法的具体用法？VB.NET StreamReader.ReadAsync怎么用？VB.NET StreamReader.ReadAsync使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.IO.StreamReader的用法示例。
在下文中一共展示了StreamReader.ReadAsync方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: MainWindow
' 导入命名空间
Imports System.Text
Imports System.IO
Class MainWindow
Private Async Sub Button_Click_1(sender As Object, e As RoutedEventArgs)
Dim filename As String = "C:\Example\existingfile.txt"
Dim result() As Char
Dim builder As StringBuilder = New StringBuilder()
Using reader As StreamReader = File.OpenText(filename)
ReDim result(reader.BaseStream.Length)
Await reader.ReadAsync(result, 0, reader.BaseStream.Length)
End Using
For Each c As Char In result
If (Char.IsLetterOrDigit(c) Or Char.IsWhiteSpace(c)) Then
builder.Append(c)
End If
Next
FileOutput.Text = builder.ToString()
End Sub
End Class