Kirat[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] JColorChooser has a getColor method which returns a Color which has methods getRed, getGreen and getBlue respectively [ad_2] solved How to get a RGB value from Color variable
[ad_1] I started with library(ggtern) ggtern(df,aes(GRAVEL,SAND,MUD))+geom_point() Adding fill=Root within the aes() function and shape=21 outside would colour in the points according to the value of some other variable, but it only makes most sense to colour the points if you have a separate variable in your data set which could determine the colour — your … 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] You use break when you want to break free from a loop, to exit the loop, to jump to the nearest code after the loop. Your code doesn’t contain a loop, so nothing to break free from, hence the error. [ad_2] solved Break outside the loop
[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] Difference between these primarily is that boolean[] cameraPermissionGranted = {false}; is an array that persists boolean type of data initialized with single element false at present unless resized(re-initialized) while boolean cameraPermissionGranted = false; is just an attribute that is initialized as false and can be updated thereafter. One of the very intuitive example that … Read more
[ad_1] Python 3 has the ipaddress module: import ipaddress for address in range(0x01010101, 0xffffffff): print(ipaddress.IPv4Address(address)) 0 [ad_2] solved Generate all numbers from 1.1.1.1 to 255.255.255.255 [closed]
[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
[ad_1] Java is not able to read/write to an arbitrary position in the RAM. If you want to share data between different applications, I recommend using a file or a database. [ad_2] solved Write data directly to RAM in Java, and then read it? [closed]
[ad_1] i would like to use it like this string role = GetRole.OfUser(username); So do so; that appears to be correct. Did you try it? or like this even better: string role = GetRole(username); That won’t work; you have to specify the method you’re calling as well as what class it comes from. If you … Read more
[ad_1] As you learnt from your previous question, char is signed on your platform. Therefore, at the beginning of your while loop, c has a negative value. Right-shifting a negative value is implementation-defined. On your platform, I imagine it is doing an arithmetic shift. 4 [ad_2] solved Bitwise OR not working C [duplicate]