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Questions tagged [asp.net]

ASP.NET is a Microsoft web application development framework that allows programmers to build dynamic web sites, web applications and web services. It is useful to use this tag in conjunction with the project type tag e.g. [asp.net-mvc], [asp.net-webforms], or [asp.net-web-api]. Do NOT use this tag for questions about ASP.NET Core - use [asp.net-core] instead.

539 votes
16 answers
827k views

How to Deserialize XML document

How do I Deserialize this XML document: <?xml version="1.0" encoding="utf-8"?> <Cars> <Car> <StockNumber>1020</StockNumber> <Make>Nissan</Make> ...
Alex's user avatar
  • 40k
2160 votes
42 answers
810k views

How do I format a Microsoft JSON date?

I'm taking my first crack at Ajax with jQuery. I'm getting my data onto my page, but I'm having some trouble with the JSON data that is returned for Date data types. Basically, I'm getting a string ...
911 votes
43 answers
1.4m views

Regex for password must contain at least eight characters, at least one number and both lower and uppercase letters and special characters

I want a regular expression to check that: contains at least eight characters, including at least one number and includes both lower and uppercase letters and include at least one special characters, ...
Swapnil Tatkondawar's user avatar
1592 votes
48 answers
1.2m views

A potentially dangerous Request.Form value was detected from the client

Every time a user posts something containing < or > in a page in my web application, I get this exception thrown. I don't want to go into the discussion about the smartness of throwing an ...
Radu094's user avatar
  • 28.3k
736 votes
31 answers
800k views

Can I set an unlimited length for maxJsonLength in web.config?

I am using the autocomplete feature of jQuery. When I try to retrieve the list of more then 17000 records (each won't have more than 10 char length), it's exceeding the length and throws the error: ...
Prasad's user avatar
  • 59.4k
1180 votes
16 answers
998k views

Maximum request length exceeded.

I am getting the error Maximum request length exceeded when I am trying to upload a video in my site. How do I fix this?
Surya sasidhar's user avatar
-2 votes
1 answer
2k views

Reach control from another page. ASP.Net

Well, this is the situation... I have a element (<h2 id="test"></h2>) in Page1.aspx, and I want to change it from Page2.aspx (administration zone for the user...), kind of... test....
Kenzo_Gilead's user avatar
  • 2,417
887 votes
23 answers
268k views

ASP.NET Web Site or ASP.NET Web Application?

When I start a new ASP.NET project in Visual Studio, I can create an ASP.NET Web Application or I can create an ASP.NET Web Site. What is the difference between ASP.NET Web Application and ASP.NET ...
Robert S.'s user avatar
  • 25.3k
739 votes
36 answers
446k views

How do you create a dropdownlist from an enum in ASP.NET MVC?

I'm trying to use the Html.DropDownList extension method but can't figure out how to use it with an enumeration. Let's say I have an enumeration like this: public enum ItemTypes { Movie = 1, ...
444 votes
9 answers
120k views

One DbContext per web request... why?

I have been reading a lot of articles explaining how to set up Entity Framework's DbContext so that only one is created and used per HTTP web request using various DI frameworks. Why is this a good ...
Andrew's user avatar
  • 11.2k
475 votes
4 answers
523k views

Server.MapPath("."), Server.MapPath("~"), Server.MapPath(@"\"), Server.MapPath("/"). What is the difference?

Can anyone explain the difference between Server.MapPath("."), Server.MapPath("~"), Server.MapPath(@"\") and Server.MapPath("/")?
Manu's user avatar
  • 29k
676 votes
9 answers
229k views

ASP.NET MVC - Set custom IIdentity or IPrincipal

I need to do something fairly simple: in my ASP.NET MVC application, I want to set a custom IIdentity / IPrincipal. Whichever is easier / more suitable. I want to extend the default so that I can call ...
Razzie's user avatar
  • 31.1k
729 votes
53 answers
1.6m views

The request was aborted: Could not create SSL/TLS secure channel

We are unable to connect to an HTTPS server using WebRequest because of this error message: The request was aborted: Could not create SSL/TLS secure channel. We know that the server doesn't have a ...
Simon Dugré's user avatar
  • 18.7k
301 votes
13 answers
860k views

How can I connvert a JSON object to a custom C# object?

Is there an easy way to populate my C# object with the JSON object passed via AJAX? This is the JSON object passed to a C# web method from the page using JSON.stringify: { "user": { ...
MHop's user avatar
  • 3,123
230 votes
24 answers
669k views

Deploying website: 500 - Internal server error

I am trying to deploy an ASP.NET application. I have deployed the site to IIS, but when visiting it with the browser, it shows me this: Server Error 500 - Internal server error. There is a problem ...
Jacob Jedryszek's user avatar

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