本文整理汇总了VB.NET中System.IO.StreamReader类的典型用法代码示例。如果您正苦于以下问题：VB.NET StreamReader类的具体用法？VB.NET StreamReader怎么用？VB.NET StreamReader使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了StreamReader类的2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: Test
' 导入命名空间
Imports System.IO
Class Test
Public Shared Sub Main()
Try
' Create an instance of StreamReader to read from a file.
Dim sr As StreamReader = New StreamReader("TestFile.txt")
Dim line As String
' Read and display the lines from the file until the end
' of the file is reached.
Do
line = sr.ReadLine()
Console.WriteLine(Line)
Loop Until line Is Nothing
sr.Close()
Catch E As Exception
' Let the user know what went wrong.
Console.WriteLine("The file could not be read:")
Console.WriteLine(E.Message)
End Try
End Sub
End Class示例2: Example
' 导入命名空间
Imports System.IO
Imports System.Threading.Tasks
Module Example
Public Sub Main()
ReadAndDisplayFilesAsync()
End Sub
Private Async Sub ReadAndDisplayFilesAsync()
Dim filename As String = "TestFile1.txt"
Dim buffer() As Char
Using sr As New StreamReader(filename)
ReDim buffer(CInt(sr.BaseStream.Length))
Await sr.ReadAsync(buffer, 0, CInt(sr.BaseStream.Length))
End Using
Console.WriteLine(New String(buffer))
End Sub
End Module输出：
This is the first line of text in a relatively short file. This is the second line. This is the third line. This is the fourth and final line.