本文整理匯總了C#中System.IO.WindowsRuntimeStorageExtensions.OpenStreamForReadAsync方法的典型用法代碼示例。如果您正苦於以下問題：C# WindowsRuntimeStorageExtensions.OpenStreamForReadAsync方法的具體用法？C# WindowsRuntimeStorageExtensions.OpenStreamForReadAsync怎麽用？C# WindowsRuntimeStorageExtensions.OpenStreamForReadAsync使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.IO.WindowsRuntimeStorageExtensions的用法示例。
在下文中一共展示了WindowsRuntimeStorageExtensions.OpenStreamForReadAsync方法的2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: BlankPage
//引入命名空間
using System;
using System.IO;
using System.Text;
using Windows.Storage.Pickers;
using Windows.Storage;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
namespace ExampleApplication
{
public sealed partial class BlankPage : Page
{
public BlankPage()
{
this.InitializeComponent();
}
private async void Button_Click_1(object sender, RoutedEventArgs e)
{
StringBuilder contents = new StringBuilder();
string nextLine;
int lineCounter = 1;
var openPicker = new FileOpenPicker();
openPicker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;
openPicker.FileTypeFilter.Add(".txt");
StorageFile selectedFile = await openPicker.PickSingleFileAsync();
using (StreamReader reader = new StreamReader(await selectedFile.OpenStreamForReadAsync()))
{
while ((nextLine = await reader.ReadLineAsync()) != null)
{
contents.AppendFormat("{0}. ", lineCounter);
contents.Append(nextLine);
contents.AppendLine();
lineCounter++;
if (lineCounter > 3)
{
contents.AppendLine("Only first 3 lines shown.");
break;
}
}
}
DisplayContentsBlock.Text = contents.ToString();
}
}
}示例2: BlankPage
//引入命名空間
using System;
using System.IO;
using Windows.Storage.Pickers;
using Windows.Storage;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
namespace ExampleApplication
{
public sealed partial class BlankPage : Page
{
public BlankPage()
{
this.InitializeComponent();
CreateTestFile();
}
private async void CreateTestFile()
{
StorageFile newFile = await ApplicationData.Current.LocalFolder.CreateFileAsync("testfile.txt");
await FileIO.WriteTextAsync(newFile, "example content in file");
}
private async void Button_Click_1(object sender, RoutedEventArgs e)
{
using (StreamReader reader = new StreamReader(
await ApplicationData.Current.LocalFolder.OpenStreamForReadAsync("testfile.txt")))
{
string contents = await reader.ReadToEndAsync();
DisplayContentsBlock.Text = contents;
}
}
}
}