如何管理DirectoryInfo寫入/讀取異常？

Question

如何管理DirectoryInfo寫入/讀取異常？

DirectoryInfo di = new DirectoryInfo(tbKeresesHelye.Text); 
foreach (var f in di.GetFiles("*", SearchOption.AllDirectories)) 
{ 
    richTextBox1.Text = richTextBox1.Text + f.Directory + "\\" + f.Name + " >> " + f.Length + "\n"; 
} 

Answer 1

如果我理解正確：

string address = "D:"; 
DirectoryInfo di = new DirectoryInfo(address); 
try 
    { 
    foreach (var f in di.GetFiles("*", SearchOption.AllDirectories)) 
    {   
     richTextBox1.Document.Blocks.Clear(); 
     richTextBox1.Document.Blocks.Add(new Paragraph(new Run(f.DirectoryName + f.Name + " >> " + f.Length + "\n"))); 
    } 
    } 
catch (Exception ex) 
    { 
     richTextBox1.Document.Blocks.Add(new Paragraph(new Run(ex.Message))); 
    } 

只是爲了您的信息，它是處理這樣的異常的好做法：

• 最準確的例外
• 的那麼精確異常
• 常見異常

，並使用throw關鍵字沒有標識保留原始 異常詳細信息這樣的：

catch (DivideByZeroException ex) 
{ 
    throw; 
} 
catch (InvalidOperationException ex) 
{ 
    throw; 
} 
catch (Exception ex) 
{ 
    throw; 
}