How to Check Use SharePointOnlineCredentials for SharePoint Online and NetworkCredential in other case.

How to Check Use SharePointOnlineCredentials for SharePoint Online and NetworkCredential in other case.

Nghia Song -  Microsoft Dynamics 365 Technical Consultant

Nghia Song

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var siteUrl = "https://sharepointsiteurl";
// Login
var userLogin = "userLogin@domain";
// Password
var userPassword = "P@ssw0rd";

var pwd = new SecureString();
foreach (var c in userPassword) pwd.AppendChar(c);
var SPOCredentials = new SharePointOnlineCredentials(userLogin, pwd);
var SPCredentials = new NetworkCredential(userLogin, pwd);

using (var ctx = new ClientContext(siteUrl))
{
    try
    {
        // try to use SharePoint Online Credentials
        ctx.Credentials = SPOCredentials;
        ctx.ExecuteQuery();
    }
    catch (ClientRequestException)
    {
        // switch to NetworkCredential
        ctx.Credentials = SPCredentials;
        ctx.ExecuteQuery();
    }
    catch (NotSupportedException)
    {
        // switch to NetworkCredential
        ctx.Credentials = SPCredentials;
        ctx.ExecuteQuery();
        Console.WriteLine("SharePoint On-premise");
    }

    // Working with SharePoint Data
}