檢查文件夾是否存在c＃webrequest

我正在使用它在現有的共享點位置創建一個文件夾。有沒有辦法在創建之前檢查文件夾是否存在，而不是使用try/catch來判斷此方法失敗，然後假定該文件夾存在？我已經檢查了webrequest方法，但沒有這樣的支票。檢查文件夾是否存在c＃webrequest

try 
{ 
    HttpWebRequest request = (System.Net.HttpWebRequest)HttpWebRequest.Create("https://site.sharepoint.com/files/"+foldername); 
    request.Credentials = CredentialCache.DefaultCredentials; 
    request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)"; 
    request.Method = "MKCOL"; 
    HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse(); 
    response.Close(); 
} 
catch (Exception ex) 
{ 
    //if this piece fails the folder exists already 
}

來源

2012-11-05 Rob

可你只是提出一個要求通過'HttpWebRequest'文件夾，看看是否存在（或得到404 ）？ –

public void CheckWebFoldersExist() 
{ 
    try 
    { 
    WebClient client = new WebClient(); 
    client.Credentials = CredentialCache.DefaultCredentials; 
    // Create a request for the URL.   
    WebRequest request = WebRequest.Create("myAddress"); 

    // If required by the server, set the credentials. 
    request.Credentials = CredentialCache.DefaultCredentials; 

    // Get the response. 
    HttpWebResponse response = (HttpWebResponse)request.GetResponse(); 

    //check response status 
    if (string.Compare(response.StatusDescription, "OK", true) == 0) 
    { 
     //URL exists so that means folder exists 
    } 
    else 
    { 
     //URL does not exist so that means folder does not exist 
    } 
    } 
    catch (Exception error) 
    { 
     //error catching 
    } 

}

來源

2012-11-07 13:07:31 SigarDave

可以使用SPWeb.GetFolder Method

private bool CheckFolderExists(SPWeb parentWeb, string folderName) { 
    SPFolder folder = parentWeb.GetFolder(folderName); 
    return folder.Exists; 
}

裁判：http://mundeep.wordpress.com/2009/02/24/checking-if-a-spfolder-exists/

來源

2012-11-05 13:14:56 Damith

但即使在返回true之後，您仍然可以獲得例外，包括FileNotFound。這不是併發安全的。 –

我沒有使用SharePoint服務器，所以很不幸，這對我來說不是解決方案。 – Rob

檢查文件夾是否存在c＃webrequest

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