.net-3.5

问题 This question already has answers here : Best way to parse command line arguments in C#? [closed] (20 answers) Closed 3 years ago . I've seen people write custom classes to more easily handle command line options in various languages. I wondered if .NET (3.5 or lower) has anything built in so that you don't have to custom-parse things like: myapp.exe file=text.txt 回答1: Here is another possible approach. Very simple but it has worked for me in the past. string[] args = {"/a:b", "/c:", "/d"};

问题 Basically I am not recieving the correct enum type for some reason and I cannot figure out why, my code is below, many thanks in advance for any pointers/ explanation... EDIT: type-> changed to anothername (thanks guys for the heads up) Helper: public static T Convert<T>(this string str) { return (T)Enum.Parse(typeof(T), str, true); } Enum values: public enum anothername { SmallText = 100, Number = 15, TextArea = 0, Bool = 0, Choices = 0, } My test: [Test] public void

问题 Uri.CheckHostName("контосо.ком") returns UriHostNameType.Unknown everywhere, but on Windows 8, where it returns UriHostNameType.Dns . Any ideas why all of a sudden a hostname with Unicode/Cyrillic characters is valid in Windows 8? 回答1: Because of this. Internationalized domain name http://en.wikipedia.org/wiki/Internationalized_domain_name http://tools.ietf.org/html/rfc5895 来源： https://stackoverflow.com/questions/14075023/a-hostname-with-unicode-characters-is-valid-in-windows-8

问题 I am migrating to .net 3.5 and I want to know whether I can call from my 3.5 application, old .net 2.0 dll's methods? Some external API's are in .net 2.0 dll. So I need those. Kindly let me know. Thanks. 回答1: Yes. You can do that. 回答2: .NET 3.5 is nothing more than .NET 2.0 SP2 with some additional assemblies. This means that .NET 3.5 is .NET 2.0, to a large extent. 回答3: Yes, .NET remains compatible with old versions. There might be some obsolete code but it will still work. Only before 2.0

问题 I am migrating to .net 3.5 and I want to know whether I can call from my 3.5 application, old .net 2.0 dll's methods? Some external API's are in .net 2.0 dll. So I need those. Kindly let me know. Thanks. 回答1: Yes. You can do that. 回答2: .NET 3.5 is nothing more than .NET 2.0 SP2 with some additional assemblies. This means that .NET 3.5 is .NET 2.0, to a large extent. 回答3: Yes, .NET remains compatible with old versions. There might be some obsolete code but it will still work. Only before 2.0

问题 I have a image to be displayed in the page and then apply some visual effects to the image. e.g Bevel effect. Once the effect is applied successfully is there a way to save the resultant image? 回答1: you can do something like this private void SaveImage() { try { SaveFileDialog saveDialog = new SaveFileDialog(); saveDialog.Filter = "JPeg Image(*.JPG)|*.jpg|Bitmap Image(*.BMP)|*.bmp|Png Image(*.PNG)|*.png|Gif Image(*.GIF)|*.gif"; if (saveDialog.ShowDialog().Value == true) { // Save current

问题 I have a image to be displayed in the page and then apply some visual effects to the image. e.g Bevel effect. Once the effect is applied successfully is there a way to save the resultant image? 回答1: you can do something like this private void SaveImage() { try { SaveFileDialog saveDialog = new SaveFileDialog(); saveDialog.Filter = "JPeg Image(*.JPG)|*.jpg|Bitmap Image(*.BMP)|*.bmp|Png Image(*.PNG)|*.png|Gif Image(*.GIF)|*.gif"; if (saveDialog.ShowDialog().Value == true) { // Save current

问题 I'm using a FormView with an ObjectDataSource and binding using <%# Bind("WhateverProp") %> - and all of my nullable columns are coming back with default values of the type in them. It appears that the FormView object doesn't have a ConvertEmtpyStringToNull property like the other binding containers do. I've found articles suggesting that this was a bug in VS 2005 / .Net 2.0 - but don't see any saying what the resolution was. Does anyone have any suggestions as to how I can work around this

问题 I'm using a FormView with an ObjectDataSource and binding using <%# Bind("WhateverProp") %> - and all of my nullable columns are coming back with default values of the type in them. It appears that the FormView object doesn't have a ConvertEmtpyStringToNull property like the other binding containers do. I've found articles suggesting that this was a bug in VS 2005 / .Net 2.0 - but don't see any saying what the resolution was. Does anyone have any suggestions as to how I can work around this

问题 I have a windows form project in which I want to force the user to enter values in certain fields before he presses the calculate button at the bottom. The fields include three pairs of radio buttons , five text boxes and one combo box . So basically all these fields need to contain a value in order to perform the calculations. Additionally, the text boxes should contain numbers - any double values. Moreover, I want to set a maximum value set for most of these text boxes which the user cannot