Why does Uri partially decode the query part?
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Background: I'm trying to some some URL manipulation for an MVC application. I've written an HtmlHelper extension method that replaces on query string value with another. The method takes the current request string, manually splits the query part (so as to prevent Foo=1&Foo=Hello%2c%20World!&Foo=2 from being read as Foo=1,Hello, World,2), and then tries to use UriBuilder and Uri to get a URL.
Problem: For some reason, Uri.ToString partially decodes query strings. As a quick test, I fired up LINQPad and ran the following:
var ub = new System.UriBuilder("http://foobar");
ub.Query = "NY%26A"; // NY&A
ub.Uri.Dump();
ub.Uri.ToString().Dump();
ub.Uri.Query.Dump();
ub.ToString().Dump();
The results are:
http://foobar/?NY&A
http://foobar/?NY&A
?NY%26A
http://foobar:80/?NY%26A
I say partially decoding, because if I use lots of escaped characters, it decodes some and leaves others in place:
var ub = new System.UriBuilder("http://foobar");
ub.Query = "!%40%23%24%25%5E%26*()"; // !@#$%^&*()
ub.Uri.Dump();
ub.Uri.ToString().Dump();
ub.Uri.Query.Dump();
ub.ToString().Dump();
And the results:
http://foobar/?!@%23$%25^&*()
http://foobar/?!@%23$%25^&*()
?!%40%23%24%25%5E%26*()
http://foobar:80/?!%40%23%24%25%5E%26*()
Question: Can someone explain what is going on?
.net uri
asked Apr 25 '12 at 17:49
Don 01001100Don 01001100
1,0031338
add a comment |
Background: I'm trying to some some URL manipulation for an MVC application. I've written an HtmlHelper extension method that replaces on query string value with another. The method takes the current request string, manually splits the query part (so as to prevent Foo=1&Foo=Hello%2c%20World!&Foo=2 from being read as Foo=1,Hello, World,2), and then tries to use UriBuilder and Uri to get a URL.
Problem: For some reason, Uri.ToString partially decodes query strings. As a quick test, I fired up LINQPad and ran the following:
var ub = new System.UriBuilder("http://foobar");
ub.Query = "NY%26A"; // NY&A
ub.Uri.Dump();
ub.Uri.ToString().Dump();
ub.Uri.Query.Dump();
ub.ToString().Dump();
The results are:
http://foobar/?NY&A
http://foobar/?NY&A
?NY%26A
http://foobar:80/?NY%26A
I say partially decoding, because if I use lots of escaped characters, it decodes some and leaves others in place:
var ub = new System.UriBuilder("http://foobar");
ub.Query = "!%40%23%24%25%5E%26*()"; // !@#$%^&*()
ub.Uri.Dump();
ub.Uri.ToString().Dump();
ub.Uri.Query.Dump();
ub.ToString().Dump();
And the results:
http://foobar/?!@%23$%25^&*()
http://foobar/?!@%23$%25^&*()
?!%40%23%24%25%5E%26*()
http://foobar:80/?!%40%23%24%25%5E%26*()
Question: Can someone explain what is going on?
.net uri
asked Apr 25 '12 at 17:49
Don 01001100Don 01001100
1,0031338
add a comment |
Background: I'm trying to some some URL manipulation for an MVC application. I've written an HtmlHelper extension method that replaces on query string value with another. The method takes the current request string, manually splits the query part (so as to prevent Foo=1&Foo=Hello%2c%20World!&Foo=2 from being read as Foo=1,Hello, World,2), and then tries to use UriBuilder and Uri to get a URL.
Problem: For some reason, Uri.ToString partially decodes query strings. As a quick test, I fired up LINQPad and ran the following:
var ub = new System.UriBuilder("http://foobar");
ub.Query = "NY%26A"; // NY&A
ub.Uri.Dump();
ub.Uri.ToString().Dump();
ub.Uri.Query.Dump();
ub.ToString().Dump();
The results are:
http://foobar/?NY&A
http://foobar/?NY&A
?NY%26A
http://foobar:80/?NY%26A
I say partially decoding, because if I use lots of escaped characters, it decodes some and leaves others in place:
var ub = new System.UriBuilder("http://foobar");
ub.Query = "!%40%23%24%25%5E%26*()"; // !@#$%^&*()
ub.Uri.Dump();
ub.Uri.ToString().Dump();
ub.Uri.Query.Dump();
ub.ToString().Dump();
And the results:
http://foobar/?!@%23$%25^&*()
http://foobar/?!@%23$%25^&*()
?!%40%23%24%25%5E%26*()
http://foobar:80/?!%40%23%24%25%5E%26*()
Question: Can someone explain what is going on?
.net uri
asked Apr 25 '12 at 17:49
Don 01001100Don 01001100
1,0031338
Background: I'm trying to some some URL manipulation for an MVC application. I've written an HtmlHelper extension method that replaces on query string value with another. The method takes the current request string, manually splits the query part (so as to prevent Foo=1&Foo=Hello%2c%20World!&Foo=2 from being read as Foo=1,Hello, World,2), and then tries to use UriBuilder and Uri to get a URL.
Problem: For some reason, Uri.ToString partially decodes query strings. As a quick test, I fired up LINQPad and ran the following:
var ub = new System.UriBuilder("http://foobar");
ub.Query = "NY%26A"; // NY&A
ub.Uri.Dump();
ub.Uri.ToString().Dump();
ub.Uri.Query.Dump();
ub.ToString().Dump();
The results are:
http://foobar/?NY&A
http://foobar/?NY&A
?NY%26A
http://foobar:80/?NY%26A
I say partially decoding, because if I use lots of escaped characters, it decodes some and leaves others in place:
var ub = new System.UriBuilder("http://foobar");
ub.Query = "!%40%23%24%25%5E%26*()"; // !@#$%^&*()
ub.Uri.Dump();
ub.Uri.ToString().Dump();
ub.Uri.Query.Dump();
ub.ToString().Dump();
And the results:
http://foobar/?!@%23$%25^&*()
http://foobar/?!@%23$%25^&*()
?!%40%23%24%25%5E%26*()
http://foobar:80/?!%40%23%24%25%5E%26*()
Question: Can someone explain what is going on?
.net uri
.net uri
asked Apr 25 '12 at 17:49
Don 01001100Don 01001100
1,0031338
asked Apr 25 '12 at 17:49
Don 01001100Don 01001100
1,0031338
asked Apr 25 '12 at 17:49
Don 01001100Don 01001100
1,0031338
asked Apr 25 '12 at 17:49
Don 01001100Don 01001100
1,0031338
asked Apr 25 '12 at 17:49
Don 01001100Don 01001100
1,0031338
1,0031338
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
It appears to be using "safe" decoding. In your second example, it won't decode # or %, because that would change the structure/meaning of the URI.
If you don't want that decoding to happen, stop calling .ToString() on the URI, and instead access the components you want directly.
answered Apr 25 '12 at 17:54
dlevdlev
42.3k5106125
Thanks for the reply. I wonder why it's decoding &, since that also changes the meaning of the URI. My goal was to be able to take an existing URI, change something, and get whole URI back out. It was easy enough to do without the .NET classes, but I wanted to understand what was going on.
– Don 01001100
Apr 25 '12 at 20:07
add a comment |
Because URI does use url encode
you can use this to read the original or add encoded value to URI object:
System.Web.HttpUtility.UrlDecode("NY%26A");
System.Web.HttpUtility.UrlEncode("NY&A");
answered Apr 25 '12 at 17:59
SweetSweet
1561413
add a comment |
If the Uri was constructed from a string, Uri.OriginalString is an easy way to get back to that original string, with the original encoding.
answered Nov 26 '18 at 22:24
Jared PhelpsJared Phelps
162210
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
It appears to be using "safe" decoding. In your second example, it won't decode # or %, because that would change the structure/meaning of the URI.
If you don't want that decoding to happen, stop calling .ToString() on the URI, and instead access the components you want directly.
answered Apr 25 '12 at 17:54
dlevdlev
42.3k5106125
Thanks for the reply. I wonder why it's decoding &, since that also changes the meaning of the URI. My goal was to be able to take an existing URI, change something, and get whole URI back out. It was easy enough to do without the .NET classes, but I wanted to understand what was going on.
– Don 01001100
Apr 25 '12 at 20:07
add a comment |
It appears to be using "safe" decoding. In your second example, it won't decode # or %, because that would change the structure/meaning of the URI.
If you don't want that decoding to happen, stop calling .ToString() on the URI, and instead access the components you want directly.
answered Apr 25 '12 at 17:54
dlevdlev
42.3k5106125
Thanks for the reply. I wonder why it's decoding &, since that also changes the meaning of the URI. My goal was to be able to take an existing URI, change something, and get whole URI back out. It was easy enough to do without the .NET classes, but I wanted to understand what was going on.
– Don 01001100
Apr 25 '12 at 20:07
add a comment |
It appears to be using "safe" decoding. In your second example, it won't decode # or %, because that would change the structure/meaning of the URI.
If you don't want that decoding to happen, stop calling .ToString() on the URI, and instead access the components you want directly.
answered Apr 25 '12 at 17:54
dlevdlev
42.3k5106125
It appears to be using "safe" decoding. In your second example, it won't decode # or %, because that would change the structure/meaning of the URI.
If you don't want that decoding to happen, stop calling .ToString() on the URI, and instead access the components you want directly.
answered Apr 25 '12 at 17:54
dlevdlev
42.3k5106125
answered Apr 25 '12 at 17:54
dlevdlev
42.3k5106125
answered Apr 25 '12 at 17:54
dlevdlev
42.3k5106125
answered Apr 25 '12 at 17:54
dlevdlev
42.3k5106125
42.3k5106125
Thanks for the reply. I wonder why it's decoding &, since that also changes the meaning of the URI. My goal was to be able to take an existing URI, change something, and get whole URI back out. It was easy enough to do without the .NET classes, but I wanted to understand what was going on.
– Don 01001100
Apr 25 '12 at 20:07
add a comment |
Thanks for the reply. I wonder why it's decoding &, since that also changes the meaning of the URI. My goal was to be able to take an existing URI, change something, and get whole URI back out. It was easy enough to do without the .NET classes, but I wanted to understand what was going on.
– Don 01001100
Apr 25 '12 at 20:07
Thanks for the reply. I wonder why it's decoding &, since that also changes the meaning of the URI. My goal was to be able to take an existing URI, change something, and get whole URI back out. It was easy enough to do without the .NET classes, but I wanted to understand what was going on.
– Don 01001100
Apr 25 '12 at 20:07
Thanks for the reply. I wonder why it's decoding &, since that also changes the meaning of the URI. My goal was to be able to take an existing URI, change something, and get whole URI back out. It was easy enough to do without the .NET classes, but I wanted to understand what was going on.
– Don 01001100
Apr 25 '12 at 20:07
add a comment |
Because URI does use url encode
you can use this to read the original or add encoded value to URI object:
System.Web.HttpUtility.UrlDecode("NY%26A");
System.Web.HttpUtility.UrlEncode("NY&A");
answered Apr 25 '12 at 17:59
SweetSweet
1561413
add a comment |
Because URI does use url encode
you can use this to read the original or add encoded value to URI object:
System.Web.HttpUtility.UrlDecode("NY%26A");
System.Web.HttpUtility.UrlEncode("NY&A");
answered Apr 25 '12 at 17:59
SweetSweet
1561413
add a comment |
Because URI does use url encode
you can use this to read the original or add encoded value to URI object:
System.Web.HttpUtility.UrlDecode("NY%26A");
System.Web.HttpUtility.UrlEncode("NY&A");
answered Apr 25 '12 at 17:59
SweetSweet
1561413
Because URI does use url encode
you can use this to read the original or add encoded value to URI object:
System.Web.HttpUtility.UrlDecode("NY%26A");
System.Web.HttpUtility.UrlEncode("NY&A");
answered Apr 25 '12 at 17:59
SweetSweet
1561413
answered Apr 25 '12 at 17:59
SweetSweet
1561413
answered Apr 25 '12 at 17:59
SweetSweet
1561413
answered Apr 25 '12 at 17:59
SweetSweet
1561413
1561413
add a comment |
add a comment |
If the Uri was constructed from a string, Uri.OriginalString is an easy way to get back to that original string, with the original encoding.
answered Nov 26 '18 at 22:24
Jared PhelpsJared Phelps
162210
add a comment |
If the Uri was constructed from a string, Uri.OriginalString is an easy way to get back to that original string, with the original encoding.
answered Nov 26 '18 at 22:24
Jared PhelpsJared Phelps
162210
add a comment |
If the Uri was constructed from a string, Uri.OriginalString is an easy way to get back to that original string, with the original encoding.
answered Nov 26 '18 at 22:24
Jared PhelpsJared Phelps
162210
If the Uri was constructed from a string, Uri.OriginalString is an easy way to get back to that original string, with the original encoding.
answered Nov 26 '18 at 22:24
Jared PhelpsJared Phelps
162210
answered Nov 26 '18 at 22:24
Jared PhelpsJared Phelps
162210
answered Nov 26 '18 at 22:24
Jared PhelpsJared Phelps
162210
answered Nov 26 '18 at 22:24
Jared PhelpsJared Phelps
162210
162210
add a comment |
add a comment |
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