You cannot create controls from any thread except for the UI thread. To run code on the UI thread you can use Dispatcher.BeginInvoke, you can find the dispatcher on any UI element (in the Dispatcher property) or using the statis Dispatcher.CurrentDispatcher property from the UI thread before starting the background process. solved Add controls to … Read more
push_back might cause a reallocation of the data contained in the vector. And that reallocation will make all iterators to the vector invalid. Dereferencing invalid iterators leads to undefined behavior. Indexes into the vector will continue to stay valid, unless you remove elements from the vector. 2 solved Vector iterators incompatible error for a vector … Read more
you can try this for your json, replace mproject by parent class, make itemId_ optional and remove HttpPath [Route(“{itemId_?}”)] public IHttpActionResult PatchItemById([FromUri] int itemId_, [FromBody] parent webForm_) 0 solved Need rules/doc for casting JSON to c# class
Despite your bad explanation, i think this is what you are looking for. #include <stdio.h> #include <stdlib.h> int main() { int a[] = {1, 2, 3}; int b[] = {1, 2}; int numElementsA = sizeof(a) / sizeof(int); int numElementsB = sizeof(b) / sizeof(int); int finalSize = numElementsA * numElementsB; printf(“finalSize: %i\n”, finalSize); int* c = … Read more
I replaced this: .OrderBy(p => { if (p.Office == “President”) return 0; else if (p.Office == “Vice-President”) return 1; else if (p.Office == “Secretary-Treasurer”) return 2; }).ToListAsync(); with this: .OrderBy(p => p.Office == “President” ? 0 : p.Office == “Vice-President” ? 1 : p.Office == “Secretary-Treasurer” ? 2 : 3).ToListAsync(); I’m hoping it is useful … Read more
A simple approach is using string.Split without argument(splits by white-space characters): using (StreamReader sr = new StreamReader(path)) { while (sr.Peek() >= 0) { string line = sr.ReadLine(); string[] words = line.Split(); foreach(string word in words) { foreach(Char c in word) { // … } } } } Let me know, if you have any questions. … Read more
From the documentation: unresolved external symbol ‘symbol’ referenced in function ‘function’ The compiled code for function makes a reference or call to symbol, but that symbol isn’t defined in any of the libraries or object files specified to the linker. This error message is followed by fatal error LNK1120. You must fix all LNK2001 and … Read more
Okay, here’s the error: s[i++] = ‘\0’; // always put a ‘\0’ character to a string array ending, so that the compiler knows it’s a string. This will cause it to terminate the string even for no input (when it got EOF directly), and since it increments i before returning it, getLine() will never return … Read more
Hi You can Implement a three dimensional array to store the RGB values and then do the operation you want. The dummy code looks some thing like this: #define TOTAL_NO_OF_PIXEL 1080 //For example total 1080 no of pixels are there int RGBcolor[3][TOTAL_NO_OF_PIXEL]; int main() { for(int cnt=0;cnt<TOTAL_NO_OF_PIXEL;cnt++) { RGBcolor[0][cnt] = RED; RGBcolor[1][cnt] = GREEN; RGBcolor[2][cnt] … Read more
Let’s clean up the code a little bit and make it a little more reusable first: foreach (int thisColor in allColors) { List<Subject> subjectsForThisColor = subjects.Where(x => x.Color == thisColor).ToList(); foreach (Subject s in subjectsForThisColor) { test += s.SubjectName + ” -” + s.Color + “\n”; switch (s.Color) { case 1: updateOneRow(“Monday”, “first”, s.SubjectName, null); … Read more
No, buffersRing[ringNum]+1 // refers to a pointer to an array element is not the same as buffersRing[ringNum][1] // refers to the actual array element The first one is the one you want. 0 solved 2 dimensional array simple understanding
All command line parameters are passed to your application through string[] args parameter. The code below shows an example: using System.Linq; namespace MyApp { class Program { static void Main(string[] args) { if (args.Contains(“/REPORT1”)) { /* Do something */ } else if (args.Contains(“/REPORT2”)) { /* Do something */ } } } } Then, in command … Read more
int count=0; var z = testdict .GroupBy(x => new { x.Value.Item2, x.Value.Item3 }) .ToDictionary(x => ++count, x => new Tuple<string, string, int> ( x.Key.Item2, x.Key.Item3, x.Count() )); 4 solved Create new Dictionary with group and count based on existing Dictionary with tuple
Try parametrizing your query; all you should provide is date and let RDBMS do its work (formats, representation etc. included) // using – do not forget to Dispose (i.e. free resources) using (SQLiteCommand command = new SQLiteCommand(databaseConnection)) { // Do not build query, but parametrize it command.CommandText = @”update credits set lastDate = @prm_Date where … Read more
I don’t know what you’re doing, but why don’t you try this, it’s likely that reading and writing through a FileStream might not be encoding agnostic, so stick with a stream and just pass bytes along: using (Stream inStream = File.Open(inFilePath, FileMode.Open)) { using (Stream outStream = File.Create(outFilePath)) { while (inStream.Position < inStream.Length) { outStream.WriteByte((byte)inStream.ReadByte()); … Read more