c#

问题 public static int[,] operator *(int[,] arr1, int[,] arr2) { int sum; int[,] res = new int[arr1.GetLength(0), arr2.GetLength(1)]; for (int i = 0; i < arr1.GetLength(0); i++) { for (int j = 0; j < arr2.GetLength(1); j++) { sum = 0; for (int k = 0; k < arr1.GetLength(1); k++) { sum = sum + (arr1[i, k] * arr2[k, j]); } res[i, j] = sum; //Console.Write("{0} ", res[i, j]); } //Console.WriteLine(); } return res; } Here i am trying to overload * operator to multiply two matrices.. but the compiler

问题 public static int[,] operator *(int[,] arr1, int[,] arr2) { int sum; int[,] res = new int[arr1.GetLength(0), arr2.GetLength(1)]; for (int i = 0; i < arr1.GetLength(0); i++) { for (int j = 0; j < arr2.GetLength(1); j++) { sum = 0; for (int k = 0; k < arr1.GetLength(1); k++) { sum = sum + (arr1[i, k] * arr2[k, j]); } res[i, j] = sum; //Console.Write("{0} ", res[i, j]); } //Console.WriteLine(); } return res; } Here i am trying to overload * operator to multiply two matrices.. but the compiler

问题 I am having trouble calling a program with the Process class to start a program. The hierarchy to the executable is in under the bin directory while the current working directory needs to be under the lib directory. /project /bin a.out (this is what I need to call) /lib (this is where I need to be in order for a.out to work) I have set the WorkingDirectory = "path/lib" and the "FileName = "../bin/a.out" . However I am getting an error of: Unhandled Exception: System.ComponentModel

问题 How exactly is string[] args populated in a C# Main method? For instance, is white space stripped? Are any of the elements ever empty string or null? How are single and double quotes handled? MSDN doesn't explain how and merely says The parameter of the Main method is a String array that represents the command-line arguments 回答1: When you start a process, you can pass a string as your argument. How those are arranged and split up is entirely up to you. So if using the Windows command line,

问题 I am having trouble calling a program with the Process class to start a program. The hierarchy to the executable is in under the bin directory while the current working directory needs to be under the lib directory. /project /bin a.out (this is what I need to call) /lib (this is where I need to be in order for a.out to work) I have set the WorkingDirectory = "path/lib" and the "FileName = "../bin/a.out" . However I am getting an error of: Unhandled Exception: System.ComponentModel

问题 I am having trouble calling a program with the Process class to start a program. The hierarchy to the executable is in under the bin directory while the current working directory needs to be under the lib directory. /project /bin a.out (this is what I need to call) /lib (this is where I need to be in order for a.out to work) I have set the WorkingDirectory = "path/lib" and the "FileName = "../bin/a.out" . However I am getting an error of: Unhandled Exception: System.ComponentModel

问题 I am having trouble calling a program with the Process class to start a program. The hierarchy to the executable is in under the bin directory while the current working directory needs to be under the lib directory. /project /bin a.out (this is what I need to call) /lib (this is where I need to be in order for a.out to work) I have set the WorkingDirectory = "path/lib" and the "FileName = "../bin/a.out" . However I am getting an error of: Unhandled Exception: System.ComponentModel

问题 I'm trying to follow links in a OneNote page to get the content of the linked page via the OneNote API. The HTML link looks like this: (removed some text) onenote:..\Partners\Cloud.one#Integrated%20Asset%20Manager%20(IAM)&section-id={DEDAE503-E375-49F2-B93D-F38B4121C70C}&page-id={7BF5121A-0B6C-4B08-9EAE-8FF2030257EE}&end&base-path={full-path-here} Trying to do OneNoteApplication.GetPageContent with the linked page-id throws an error for page not found. If I do a GetHierarchy the ID's for the

问题 I have a WPF application with MVVM pattern. In one of my view, I have to bind an ObservableCollection to view. In that view, I have one ListBox and one DataGrid both bind to the same ObservableCollection but doing different things like events, style etc.. I need only one of these controls displayed at a time and what I did is created two user controls, one for DataGrid and other for ListBox . And I switched between them by placing a ContentControl on the main view(something similar to this

问题 Yes, I know this has been discussed many times before, and I read all the posts and comments regarding this question, but still can't seem to understand something. One of the options that MSDN offers to solve this violation, is by returning a collection (or an interface which is implemented by a collection ) when accessing the property, however clearly it does not solve the problem because most collections are not immutable and can also be changed. Another possibility I've seen in the answers