C# HTTP Examples

C# Basic

C# Data Type

C# OOP

C# IO

C# Graphics & UI

C# Advanced

URLs in C#

To get the URL of the current page in ASP.NET, you can use the Request.Url.AbsoluteUri property:

string url = Request.Url.AbsoluteUri;

To get the absolute path of the current page in ASP.NET, you can use the Request.Url.AbsolutePath property:

string path = Request.Url.AbsolutePath;

To get the domain name of the current page in ASP.NET, you can use the Request.Url.Host property:

string domain = Request.Url.Host;

To get the path and parameters of the current page in ASP.NET, you can use the Request.Url.PathAndQuery property:

string pathAndQuery = Request.Url.PathAndQuery;

To get the URL of the current page in ASP.NET Core, you can use the HttpContext.Request.Path property:

string url = HttpContext.Request.Path.ToString();

To get the absolute URL of an action in ASP.NET MVC, you can use the Url.Action() method:

string url = Url.Action("ActionName", "ControllerName", new { id = 1 }, Request.Url.Scheme);

To get the URL without the query string in C#, you can use the Request.Url.GetLeftPart(UriPartial.Path) method:

string urlWithoutQuery = Request.Url.GetLeftPart(UriPartial.Path);

To combine URLs in C#, you can use the Uri class:

Uri uri1 = new Uri("https://www.example.com/");
Uri uri2 = new Uri(uri1, "path/to/page.html");
string combinedUrl = uri2.ToString(); // "https://www.example.com/path/to/page.html"

C# URL manipulation:

Basic manipulation of URLs in C#.

Code snippet:

Uri uri = new Uri("https://www.example.com/path/page?param=value");
string modifiedUrl = uri.ToString().Replace("www", "blog");

Parsing URLs in C#:

Parsing different components of a URL in C#.

Code snippet:

Uri uri = new Uri("https://www.example.com/path/page?param=value");
string scheme = uri.Scheme; // "https"
string host = uri.Host; // "www.example.com"
string path = uri.AbsolutePath; // "/path/page"

Constructing URLs in C#:

Building URLs from individual components in C#.

Code snippet:

UriBuilder builder = new UriBuilder
{
    Scheme = "https",
    Host = "www.example.com",
    Path = "/path/page",
    Query = "param=value"
};
Uri uri = builder.Uri;

URL encoding and decoding in C#:

Encoding and decoding URL components in C#.

Code snippet:

string originalString = "hello world";
string encodedString = Uri.EscapeDataString(originalString);
string decodedString = Uri.UnescapeDataString(encodedString);

Relative and absolute URLs in C#:
- Differentiating between relative and absolute URLs in C#.
- Code snippet:
```
Uri baseUri = new Uri("https://www.example.com");
Uri absoluteUri = new Uri(baseUri, "/path/page");
```

C# URL parameters handling:

Handling parameters in URLs in C#.

Code snippet:

Uri uri = new Uri("https://www.example.com/path/page?param1=value1&param2=value2");
string paramValue = HttpUtility.ParseQueryString(uri.Query).Get("param1");

Query string manipulation in C#:

Manipulating query strings in C#.

Code snippet:

Uri uri = new Uri("https://www.example.com/path/page?param1=value1&param2=value2");
string updatedQuery = "param3=newValue3";
Uri updatedUri = new UriBuilder(uri) { Query = updatedQuery }.Uri;

Building query parameters for URLs in C#:

Building query parameters dynamically in C#.

Code snippet:

Dictionary<string, string> parameters = new Dictionary<string, string>
{
    { "param1", "value1" },
    { "param2", "value2" }
};
string queryString = string.Join("&", parameters.Select(p => $"{p.Key}={Uri.EscapeDataString(p.Value)}"));
Uri uri = new Uri($"https://www.example.com/path/page?{queryString}");

URL path manipulation in C#:

Manipulating the path component of a URL in C#.

Code snippet:

Uri uri = new Uri("https://www.example.com/path1/page");
string newPath = "/path2/newpage";
Uri updatedUri = new UriBuilder(uri) { Path = newPath }.Uri;

C# URL validation:

Validating URLs in C#.

Code snippet:

Uri uri;
bool isValidUrl = Uri.TryCreate("https://www.example.com", UriKind.Absolute, out uri);

Getting host and path from URL in C#:

Extracting host and path components from a URL in C#.

Code snippet:

Uri uri = new Uri("https://www.example.com/path/page");
string host = uri.Host; // "www.example.com"
string path = uri.AbsolutePath; // "/path/page"

Working with fragments in C# URLs:

Handling fragments (hash) in URLs in C#.

Code snippet:

Uri uri = new Uri("https://www.example.com/path/page#section");
string fragment = uri.Fragment; // "#section"

C# URL escape characters:
- Understanding and handling URL escape characters in C#.
- Code snippet:
```
string escapedUrl = Uri.EscapeUriString("https://www.example.com/path with spaces");
```

Handling special characters in URLs in C#:

Managing special characters in URLs in C#.

Code snippet:

string specialUrl = "https://www.example.com/path with spaces?param=value";
string encodedSpecialUrl = Uri.EscapeDataString(specialUrl);