Change HTML with CSS inline to use data Url
1
In want to, on the fly, change an HTML similar to this:
<html><head><style>
body
background: transparent url(http://example.com/image.gif) no-repeat right bottom;
</style><head>
<body>
<img src="http://example.com/image2.gif"/>
</body>
</html>
To (urls are cut):
<html><head><style>
body
background: transparent url(data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/...) no-repeat right bottom;
</style>
<head>
<body>
<img src="data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/...."/>
</body>
</html>
Now I use this code:
private string EmbebedImages(string strHtml)
var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(strHtml);
foreach (var imgNode in doc.DocumentNode.SelectNodes("//img[@src]"))
string url = imgNode.Attributes["src"].Value;
if (url.StartsWith("http"))
using (var webClient = new WebClient())
var imageAsByteArray = webClient.DownloadData(url);
string mimeType = MimeMapping.GetMimeMapping(url);
imgNode.Attributes["src"].Value = "data:" + mimeType + ";base64," +
Convert.ToBase64String(imageAsByteArray);
return doc.DocumentNode.OuterHtml;
But my code ignores urls in CSS.
Is it possible to make this change simple? I tried with some css-libraries, but I can't find a simple form...
c# html css html-agility-pack
asked Nov 15 '18 at 8:32
Victor SanchezVictor Sanchez
318423
add a comment |
1
In want to, on the fly, change an HTML similar to this:
<html><head><style>
body
background: transparent url(http://example.com/image.gif) no-repeat right bottom;
</style><head>
<body>
<img src="http://example.com/image2.gif"/>
</body>
</html>
To (urls are cut):
<html><head><style>
body
background: transparent url(data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/...) no-repeat right bottom;
</style>
<head>
<body>
<img src="data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/...."/>
</body>
</html>
Now I use this code:
private string EmbebedImages(string strHtml)
var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(strHtml);
foreach (var imgNode in doc.DocumentNode.SelectNodes("//img[@src]"))
string url = imgNode.Attributes["src"].Value;
if (url.StartsWith("http"))
using (var webClient = new WebClient())
var imageAsByteArray = webClient.DownloadData(url);
string mimeType = MimeMapping.GetMimeMapping(url);
imgNode.Attributes["src"].Value = "data:" + mimeType + ";base64," +
Convert.ToBase64String(imageAsByteArray);
return doc.DocumentNode.OuterHtml;
But my code ignores urls in CSS.
Is it possible to make this change simple? I tried with some css-libraries, but I can't find a simple form...
c# html css html-agility-pack
asked Nov 15 '18 at 8:32
Victor SanchezVictor Sanchez
318423
you are just accessingimgwith your c# code. You mean you need css background image with HtmlAgilityPack?
– Znaneswar
Nov 15 '18 at 9:38
I need change all urls in style. Now I only change urls in IMG tag. This is only a sample.
– Victor Sanchez
Nov 15 '18 at 10:03
add a comment |
1
1
1
In want to, on the fly, change an HTML similar to this:
<html><head><style>
body
background: transparent url(http://example.com/image.gif) no-repeat right bottom;
</style><head>
<body>
<img src="http://example.com/image2.gif"/>
</body>
</html>
To (urls are cut):
<html><head><style>
body
background: transparent url(data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/...) no-repeat right bottom;
</style>
<head>
<body>
<img src="data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/...."/>
</body>
</html>
Now I use this code:
private string EmbebedImages(string strHtml)
var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(strHtml);
foreach (var imgNode in doc.DocumentNode.SelectNodes("//img[@src]"))
string url = imgNode.Attributes["src"].Value;
if (url.StartsWith("http"))
using (var webClient = new WebClient())
var imageAsByteArray = webClient.DownloadData(url);
string mimeType = MimeMapping.GetMimeMapping(url);
imgNode.Attributes["src"].Value = "data:" + mimeType + ";base64," +
Convert.ToBase64String(imageAsByteArray);
return doc.DocumentNode.OuterHtml;
But my code ignores urls in CSS.
Is it possible to make this change simple? I tried with some css-libraries, but I can't find a simple form...
c# html css html-agility-pack
asked Nov 15 '18 at 8:32
Victor SanchezVictor Sanchez
318423
In want to, on the fly, change an HTML similar to this:
<html><head><style>
body
background: transparent url(http://example.com/image.gif) no-repeat right bottom;
</style><head>
<body>
<img src="http://example.com/image2.gif"/>
</body>
</html>
To (urls are cut):
<html><head><style>
body
background: transparent url(data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/...) no-repeat right bottom;
</style>
<head>
<body>
<img src="data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/...."/>
</body>
</html>
Now I use this code:
private string EmbebedImages(string strHtml)
var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(strHtml);
foreach (var imgNode in doc.DocumentNode.SelectNodes("//img[@src]"))
string url = imgNode.Attributes["src"].Value;
if (url.StartsWith("http"))
using (var webClient = new WebClient())
var imageAsByteArray = webClient.DownloadData(url);
string mimeType = MimeMapping.GetMimeMapping(url);
imgNode.Attributes["src"].Value = "data:" + mimeType + ";base64," +
Convert.ToBase64String(imageAsByteArray);
return doc.DocumentNode.OuterHtml;
But my code ignores urls in CSS.
Is it possible to make this change simple? I tried with some css-libraries, but I can't find a simple form...
c# html css html-agility-pack
c# html css html-agility-pack
asked Nov 15 '18 at 8:32
Victor SanchezVictor Sanchez
318423
asked Nov 15 '18 at 8:32
Victor SanchezVictor Sanchez
318423
edited Nov 15 '18 at 9:16
Victor Sanchez
asked Nov 15 '18 at 8:32
Victor SanchezVictor Sanchez
318423
asked Nov 15 '18 at 8:32
Victor SanchezVictor Sanchez
318423
asked Nov 15 '18 at 8:32
Victor SanchezVictor Sanchez
318423
318423
you are just accessingimgwith your c# code. You mean you need css background image with HtmlAgilityPack?
– Znaneswar
Nov 15 '18 at 9:38
I need change all urls in style. Now I only change urls in IMG tag. This is only a sample.
– Victor Sanchez
Nov 15 '18 at 10:03
add a comment |
you are just accessingimgwith your c# code. You mean you need css background image with HtmlAgilityPack?
– Znaneswar
Nov 15 '18 at 9:38
I need change all urls in style. Now I only change urls in IMG tag. This is only a sample.
– Victor Sanchez
Nov 15 '18 at 10:03
you are just accessing
img with your c# code. You mean you need css background image with HtmlAgilityPack?– Znaneswar
Nov 15 '18 at 9:38
you are just accessing
img with your c# code. You mean you need css background image with HtmlAgilityPack?– Znaneswar
Nov 15 '18 at 9:38
I need change all urls in style. Now I only change urls in IMG tag. This is only a sample.
– Victor Sanchez
Nov 15 '18 at 10:03
I need change all urls in style. Now I only change urls in IMG tag. This is only a sample.
– Victor Sanchez
Nov 15 '18 at 10:03
add a comment |
1 Answer
1
active
oldest
votes
1
you can't do that with HtmlAgilityPack but Try Regex
using System.Text.RegularExpressions;
private string EmbebedImages(string strHtml) png
answered Nov 19 '18 at 12:02
ewwinkewwink
11.9k22239
add a comment |
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1 Answer
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active
oldest
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oldest
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active
oldest
votes
1
you can't do that with HtmlAgilityPack but Try Regex
using System.Text.RegularExpressions;
private string EmbebedImages(string strHtml) png
answered Nov 19 '18 at 12:02
ewwinkewwink
11.9k22239
add a comment |
1
you can't do that with HtmlAgilityPack but Try Regex
using System.Text.RegularExpressions;
private string EmbebedImages(string strHtml) png
answered Nov 19 '18 at 12:02
ewwinkewwink
11.9k22239
add a comment |
1
1
1
you can't do that with HtmlAgilityPack but Try Regex
using System.Text.RegularExpressions;
private string EmbebedImages(string strHtml) png
answered Nov 19 '18 at 12:02
ewwinkewwink
11.9k22239
you can't do that with HtmlAgilityPack but Try Regex
using System.Text.RegularExpressions;
private string EmbebedImages(string strHtml) png
answered Nov 19 '18 at 12:02
ewwinkewwink
11.9k22239
answered Nov 19 '18 at 12:02
ewwinkewwink
11.9k22239
answered Nov 19 '18 at 12:02
ewwinkewwink
11.9k22239
answered Nov 19 '18 at 12:02
ewwinkewwink
11.9k22239
11.9k22239
add a comment |
add a comment |
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you are just accessing
imgwith your c# code. You mean you need css background image with HtmlAgilityPack?– Znaneswar
Nov 15 '18 at 9:38
I need change all urls in style. Now I only change urls in IMG tag. This is only a sample.
– Victor Sanchez
Nov 15 '18 at 10:03