Question - What is a good best practice approach for how can I save/keep-in-sync an jn-memory graph of objects with the database? Background: That is say I have the classes Node and Relationship, and the application is building up a graph of related objects using these classes. There might be 1000 nodes with various relationships be...
Hello, May I know what is the different between C# and .Net? because when I think of C#, right away I would say is a .Net, but when I seearch for job, posts sometimes say require candidate to have C# and .Net experience. Can someone give me little of explaination? thanks.. ...
I have time from DB: string user_time = "17:10:03"; //Hours:minutes:seconds DateTime time_now = DateTime.Now; How do I compare the time? How make same like this: if(time_now > user_time) { //Do something } else { //Do something } ...
I need to Match the second and subsequent occurances of the * character using a regular expression. I'm actually using the Replace method to remove them so here's some examples of before and after: test* -> test* (no change) *test* -> *test test** *e -> test* e Is it possible to do this with a regular expression? Thanks ...
In VS 2008 setup/deployment project, is there any way to add a custom error dialog (or customize the existing one) to handle errors encountered during the installation process? ...
We have a .NET application which targets .NET 3.5. Our clients run it from a shared drive (very infrequently) in order to have a central config file location. We have noticed that if a workstation accesses the shared drive and runs the program, but does not have .NET 3.5 installed, nothing happens, no error, no exception, no log entr...
I set a session object at one juncture in my code: Session("my_name") = "Dave" Later in my code I give the user a chance to update this object: Session("my_name") = TextBox1.Text I reload my page and display a little hello statement like this: Label1.Text = "Hello" & CStr(Session("my_name")) The result is: "Hello Dave" no matter...
I have a C# project that plays Morse code for RSS feeds. I write it using Managed DirectX, only to discover that Managed DirectX is old and deprecated. The task I have is to play pure sine wave bursts interspersed with silence periods (the code) which are precisely timed as to their duration. I need to be able to call a function which pl...
Hi, I'm writing a sharepoint web part. It writes logs into a file (by using StreamWriter). However, logs are written only for users whose accounts are administrators on the server hosting the web part. I want to detect which account (probably not by using SPUser) is executing web part's code, so that I can have logs generated for less pr...
What is the “best practice” way of manually iterating (i.e., one at a time with a “next” button) over a set of XElements in my XDocument? Say I select the set of elements I want thusly: var elems = from XElement el in m_xDoc.Descendants() where (el.Name.LocalName.ToString() == "q_a") select el; I can use an...
Today I experienced a weird problem while trying to remotely debug an application built for the .NET 4.0 runtime. The application resides on a network share and executed by a remote machine. However the application crashes each time during load because of a SecurityException raised by a permission demand in the System.Configuration.Conf...
Hello All- I'm having trouble with a URL string in my Web Application. It's using a UNC path similar to \\houtestmachine\common\File1.pdf My problem is when it encounters files that have a # character. I tried doing a string newstring = originalstring.Replace("#", "%23"); but the # is still there in URL (target of a hyperlink) at run...
So, given then following code type MyClass () = let items = Dictionary<string,int>() do items.Add ("one",1) items.Add ("two",2) items.Add ("three",3) member this.TryGetValue (key,value) = items.TrygetValue (key,value) let c = MyClass () let d = Dictionary<string,int> () d.Add ("one",1) d.Add ("two",2) d.Add ("th...
For a company that has their stack built on Apache Tomcat and JSP what would be the best web service platform to be leveraged by that infrastructure that would be consumed by .NET client. From the .NET side I know the answer would be Windows Communication Foundation (WCF) but I'm not sure from the other side. ...
Is it possible to receive custom generic typed objects through AMF? I'm trying to integrate a flex app with an existing C# service but flex is choking on custom generic typed objects. As far as I can tell Flex doesn't even support generics, but I'd like to be able to even just read in the object and cast its members as necessary. I basic...
What .NET method has this error message: "Object cannot be cast from DBNull to other types" The stack traces have been stipped from my logs so I'm looking for a starting point. Answers: Convert.ToInt32: "Object cannot be cast from DBNull to other types." VB's CInt: "Conversion from type 'DBNull' to type 'Integer' is not valid." C#'s ...
I couldnt figure the problem out so after debugging i finally decide to write the below. Why is the location jumping around?! 147 86 to 294 212 then back every callback? pic.MouseMove += my_MouseMove; my_MouseMove(object sender, MouseEventArgs e) Console.WriteLine("{0} {1} {2} {3}", e.X, e.Y, e.Location.X, e.Location.Y); 147 86 147 ...
I have a schedule (Voyages) table like this: ID Arrival Departure OrderIndex 1 01/01/1753 02/10/2009 0 1 02/11/2009 02/15/2009 1 1 02/16/2009 02/19/2009 2 1 02/21/2009 01/01/1753 3 2 01/01/1753 03/01/2009 0 2 03/04/2009 03/07/2009 ...
-edit- I dont need the answer anymore now that i calculate based on mousedown position. Basically in relation to this question It seems like e.X,y and e.Location.X,Y is relative to mousedown? I seen negative values when i havent moved it left/above the parent picbox. So it seems like the values are relative to my mousedown, but i need ...
If I am serializing and later deserializing a class using DataContractSerializer how can I control the initial values of properties that were not serialized? Consider the Person class below. Its data contract is set to serialize the FirstName and LastName properties but not the IsNew property. I want IsNew to initialize to TRUE whether ...