C# OAuth2（开发人员如何使用）

class Program
{
    private static string clientId = "your-client-id";
    private static string clientSecret = "your-client-secret";
    private static string redirectUri = "your-redirect-uri";
    static void Main(string [] args)
    {
        // OAuth2 implementation will go here
    }
}

Friend Class Program
	Private Shared clientId As String = "your-client-id"
	Private Shared clientSecret As String = "your-client-secret"
	Private Shared redirectUri As String = "your-redirect-uri"
	Shared Sub Main(ByVal args() As String)
		' OAuth2 implementation will go here
	End Sub
End Class

static void Main(string [] args)
{
    var authorizationEndpoint = "https://authorization-server.com/auth";
    var responseType = "code";
    var scope = "email profile";
    var authorizationUrl = $"{authorizationEndpoint}?response_type={responseType}&client_id={clientId}&redirect_uri={redirectUri}&scope={scope}";
    // Redirect the user to authorizationUrl
}

Shared Sub Main(ByVal args() As String)
	Dim authorizationEndpoint = "https://authorization-server.com/auth"
	Dim responseType = "code"
	Dim scope = "email profile"
	Dim authorizationUrl = $"{authorizationEndpoint}?response_type={responseType}&client_id={clientId}&redirect_uri={redirectUri}&scope={scope}"
	' Redirect the user to authorizationUrl
End Sub

public static async Task<string> ExchangeAuthorizationCodeForAccessToken(string authorizationCode)
{
    var tokenEndpoint = "https://authorization-server.com/token";
    var postData = $"grant_type=authorization_code&code={authorizationCode}&redirect_uri={redirectUri}&client_id={clientId}&client_secret={clientSecret}";
    var data = Encoding.ASCII.GetBytes(postData);
    var request = WebRequest.Create(tokenEndpoint);
    request.Method = "POST";
    request.ContentType = "application/x-www-form-urlencoded";
    request.ContentLength = data.Length;
    using (var stream = request.GetRequestStream())
    {
        stream.Write(data, 0, data.Length);
    }
    var response = (HttpWebResponse)request.GetResponse();
    var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
    // Extract the access token from the response
    var token = ExtractAccessTokenFromResponse(responseString);
    return token;
}

Public Shared Async Function ExchangeAuthorizationCodeForAccessToken(ByVal authorizationCode As String) As Task(Of String)
	Dim tokenEndpoint = "https://authorization-server.com/token"
	Dim postData = $"grant_type=authorization_code&code={authorizationCode}&redirect_uri={redirectUri}&client_id={clientId}&client_secret={clientSecret}"
	Dim data = Encoding.ASCII.GetBytes(postData)
	Dim request = WebRequest.Create(tokenEndpoint)
	request.Method = "POST"
	request.ContentType = "application/x-www-form-urlencoded"
	request.ContentLength = data.Length
	Using stream = request.GetRequestStream()
		stream.Write(data, 0, data.Length)
	End Using
	Dim response = CType(request.GetResponse(), HttpWebResponse)
	Dim responseString = (New StreamReader(response.GetResponseStream())).ReadToEnd()
	' Extract the access token from the response
	Dim token = ExtractAccessTokenFromResponse(responseString)
	Return token
End Function

public static async Task<string> MakeAuthorizedRequest(string accessToken, string apiUrl)
{
    var request = WebRequest.Create(apiUrl);
    request.Headers.Add("Authorization", $"Bearer {accessToken}");
    var response = (HttpWebResponse)request.GetResponse();
    var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
    return responseString;
}

Public Shared Async Function MakeAuthorizedRequest(ByVal accessToken As String, ByVal apiUrl As String) As Task(Of String)
	Dim request = WebRequest.Create(apiUrl)
	request.Headers.Add("Authorization", $"Bearer {accessToken}")
	Dim response = CType(request.GetResponse(), HttpWebResponse)
	Dim responseString = (New StreamReader(response.GetResponseStream())).ReadToEnd()
	Return responseString
End Function

using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();

        // 1. Convert HTML String to PDF
        var htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>";
        var pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent);
        pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf");

        // 2. Convert HTML File to PDF
        var htmlFilePath = "path_to_your_html_file.html"; // Specify the path to your HTML file
        var pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath);
        pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf");

        // 3. Convert URL to PDF
        var url = "http://ironpdf.com"; // Specify the URL
        var pdfFromUrl = renderer.RenderUrlAsPdf(url);
        pdfFromUrl.SaveAs("URLToPDF.pdf");
    }
}

Imports IronPdf

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		Dim renderer = New ChromePdfRenderer()

		' 1. Convert HTML String to PDF
		Dim htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>"
		Dim pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent)
		pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf")

		' 2. Convert HTML File to PDF
		Dim htmlFilePath = "path_to_your_html_file.html" ' Specify the path to your HTML file
		Dim pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath)
		pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf")

		' 3. Convert URL to PDF
		Dim url = "http://ironpdf.com" ' Specify the URL
		Dim pdfFromUrl = renderer.RenderUrlAsPdf(url)
		pdfFromUrl.SaveAs("URLToPDF.pdf")
	End Sub
End Class

public static async Task<string> FetchProtectedContent(string accessToken, string apiUrl)
{
    var httpClient = new HttpClient();
    httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken);
    var response = await httpClient.GetAsync(apiUrl);
    response.EnsureSuccessStatusCode();
    return await response.Content.ReadAsStringAsync();
}

Public Shared Async Function FetchProtectedContent(ByVal accessToken As String, ByVal apiUrl As String) As Task(Of String)
	Dim httpClient As New HttpClient()
	httpClient.DefaultRequestHeaders.Authorization = New System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken)
	Dim response = Await httpClient.GetAsync(apiUrl)
	response.EnsureSuccessStatusCode()
	Return Await response.Content.ReadAsStringAsync()
End Function

public static async Task ConvertHtmlToPdf(string accessToken, string apiUrl, string outputPdfPath)
{
    // Fetch protected content using the access token
    string htmlContent = await FetchProtectedContent(accessToken, apiUrl);
    // Use IronPDF to convert the HTML content to a PDF document
    var renderer = new IronPdf.HtmlToPdf();
    var pdf = renderer.RenderHtmlAsPdf(htmlContent);
    // Save the generated PDF to a file
    pdf.SaveAs(outputPdfPath);
}

Public Shared Async Function ConvertHtmlToPdf(ByVal accessToken As String, ByVal apiUrl As String, ByVal outputPdfPath As String) As Task
	' Fetch protected content using the access token
	Dim htmlContent As String = Await FetchProtectedContent(accessToken, apiUrl)
	' Use IronPDF to convert the HTML content to a PDF document
	Dim renderer = New IronPdf.HtmlToPdf()
	Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
	' Save the generated PDF to a file
	pdf.SaveAs(outputPdfPath)
End Function