[ad_1] I’m not sure I understand your question. XMLDocument represents an XML document, it’s simple 🙂 http://msdn.microsoft.com/en-us/library/system.xml.xmldocument(v=vs.80).aspx XML is a markup language and XMLDocument is a class to read an XML file. 0 [ad_2] solved what is the difference between xml document and xml [closed]
[ad_1] In Visual Studio C++, what are the memory allocation representations?: 0xCCCCCCCC : Used by Microsoft’s C++ debugging runtime library to mark uninitialised stack memory At the moment you do obj->, your obj is not initialized. The two lines of code in the question are not your real code, or there is something important taking … Read more
[ad_1] Look at the CodeDom. You can load the existing classes, modify their object graph, and generate C# files (or even JIT compile and use). [ad_2] solved Modifying an existing c# file [closed]
[ad_1] var number = new int[10]; for (int i = 0; i < number.Length; i++) { Console.Write(“Write a number : “); int x = int.Parse(Console.ReadLine()); if (number.Contains(x)) { Console.WriteLine(“This number already exists”); i–; // retry for this index } else { number[i] = x; } } Try something like this if you do not want … Read more
[ad_1] What you’re ordering by here is the distance between the pivot (the birthdate) and each date. Something like this: var sorted = data.OrderBy(date => (birthdate – date).TotalDays); will sort by distance, but put all the after dates first, because the TotalDays will be negative, then the before dates. To avoid that, we need to … Read more
[ad_1] Your issue is simply syntax; you had a period instead of a comma at textBox1.Text+”‘.'”+textBox3.Text The other issue is that you need to use parameterized queries. Here is your code updated to use parameterization… private void button2_Click(object sender, EventArgs e) { Byte[] IMAGES = null; FileStream STREAM = new FileStream(IMGLOCATION, FileMode.Open, FileAccess.Read); BinaryReader BSR … Read more
[ad_1] Header files are usually not translation units but meant to be included by them. That’s why header files usually do not “define” variables, since this would lead to multiple definition errors when the header file is included by different translation units (thereby re-defining the variable again and again). That’s where “extern” comes into place, … Read more
[ad_1] It’s quite easy actually, something like: for(int i = 0; i < 100; i++) { Console.WriteLine(string.Format(“{0},{1},{2}”, i, i+1, i+2)); } It will goes from 0 to 101 because it always prints 3 numbers so the last iteration would be 99,100 otherwise. If you want it that way just edit i < 100 with i … Read more
[ad_1] Add .ExecuteNonQuery to execute the query, and add try-catch-block to catch any exception: try { … SqlCommand com = new SqlCommand(queryStr, conn); com.ExecuteNonQuery(); conn.Close(); … } catch (Exception ex) { MessageBox.Show(ex.ToString()); } [ad_2] solved Update query not working in C#
[ad_1] It can be done – however your function should be returning an int. int foo(void) { return 1; } int main(void) { switch(foo()) { case 0: printf(“foo\n”); break; case 1: printf(“bar\n”); break; default: break; } return 0; } As, can been seen this compiles and runs. [09:36 PM] $ gcc -Wall -Werror switcht.c -o … Read more
[ad_1] You need: foreach (TextBox element in list) { element.Text = “5.0”; } In your first code sample list[i] represents a single item in the list a TextBox, in your foreach loop you have element for the same thing. IMO, Usually, modification in foreach loop should be avoided, you might end up writing code, where … Read more
[ad_1] When you execute these lines: vector<string> wordSets(24); wordSets.push_back(“CHICKEN”); wordSets has 24 empty items an the item “CHICKEN”. I suspect, you didn’t mean that. Changing the first line to: vector<string> wordSets; should fix the wrong number of items problem. If you want to reduce the number of times memory is allocated by calls to push_back, … Read more
[ad_1] How about this: return (1 + s.Take(Pos).Count(c => c == ‘\n’)); [ad_2] solved Convert String Extension to Linq [closed]
[ad_1] In C, loadSurface would be declared as simply SDL_Surface *loadSurface(const char *path) which means the call to SDL_LoadBMP can be written as SDL_Surface *loadedSurface = SDL_LoadBMP(path); The details of what std::string does and why .c_str() is needed are not relevant if you are not interested in learning C++, and in this case are not … Read more
[ad_1] To build on @Enigmativity’s answer, here’s a proper benchmark using BenchmarkDotNet: public class Benchmark { private const int N = 1000000; [Benchmark] public HashSet<int> EnumerableRange() => new HashSet<int>(Enumerable.Range(1, N + 1)); [Benchmark] public HashSet<int> NoPreallocation() { var result = new HashSet<int>(); for (int n = 1; n < N + 1; n++) { result.Add(n); … Read more