c++

[Solved] ASP NET Core (MVC) problem with passing parameters from the view to the controller

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[ad_1] Because the parameter names you accept are answer1, answer2, you should have a matching name in your view to make it possible to bind successfully. You can modify your front-end code as follows(DropDownListForto DropDownList): @model CommonEntity @using (Html.BeginForm(“Find”, “Hello”)) { @Html.DropDownList(“answer1”, new SelectList(ViewBag.Location, “Title”, “Title”)) @Html.DropDownList(“answer2”, new SelectList(ViewBag.JobTitle, “Title”, “Title”)) <button type=”submit”>Find</button> } Your … Read more

[Solved] how to get parameter in other class

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[ad_1] Please try in that way:- In first class:- public string _chartName; In Second Class:- internal class DefaultAllReadingsDataProvider : DataProvider { internal override OutputData GetOutputData(Guid userId, int N, int pageNum) { IntelliChart iclass = new IntelliChart(“test”); Response.Write(iclass._chartName); } } 0 [ad_2] solved how to get parameter in other class

[Solved] In a square matrix, where each cell is black or white. Design an algorithm to find the max white sub-square [closed]

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[ad_1] First note that your solution is NOT O(n^2), it is more like O(n^4), because for each cell, you look for the largest matrix that can be of size up to O(n^2) itself, so it is totalling to O(n^4). It can be done however in O(n^2): First, define 2 auxillary functions (implemented as matrices): whitesLeft(x,y) … Read more

[Solved] Why the SQL command is not executing

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[ad_1] You need to change your dropdownlist to an ASP:DropDownList with ListItems in it. Then you’d replace ‘RIDGE HILL’ with ‘” + slcLocation.SelectedItem.Value (or Text) + “‘ …” 0 [ad_2] solved Why the SQL command is not executing

[Solved] System.Data.OleDb.OleDbException: ‘Invalid SQL statement; expected ‘DELETE’, ‘INSERT’, ‘PROCEDURE’, ‘SELECT’, or ‘UPDATE’.’ in my Accounting Project

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[ad_1] Typo of select in OleDbDataAdapter da = new OleDbDataAdapter(“Selct * from [Product]”, con); That should be like OleDbDataAdapter da = new OleDbDataAdapter(“Select * from [Product]”, con); 1 [ad_2] solved System.Data.OleDb.OleDbException: ‘Invalid SQL statement; expected ‘DELETE’, ‘INSERT’, ‘PROCEDURE’, ‘SELECT’, or ‘UPDATE’.’ in my Accounting Project

[Solved] To clear loaded images in a picturebox-c#

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[ad_1] Your code has many issues. The one you are looking for is that you don’t clear the alist before loading new file names. So insert: alist.Clear(); before //Get Each files And also filelength = alist.Count; after the loop. No need to count while adding! Also note that ArrayList is pretty much depracated and you … Read more

[Solved] libcurl – unable to download a file

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[ad_1] Your code curl_easy_setopt(handle,CURLOPT_WRITEFUNCTION,&AZLyricsDownloader::write_data_to_var); and the following quote from the documentation from libcurl There’s basically only one thing to keep in mind when using C++ instead of C when interfacing libcurl: The callbacks CANNOT be non-static class member functions Example C++ code: class AClass { static size_t write_data(void *ptr, size_t size, size_t nmemb, void* ourpointer) … Read more

[Solved] Why does this program crashes?

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[ad_1] No, no, no, just use std::string! Easier to use, and easier to understand! #include<iostream> #include <string> using namespace std; int main(){ string name,add; cout<<“Name: “; getline(cin, name); // A name probably has more than 1 word cout<<“\n\tadd: “; cin>>add; cout<<“\n\tName:”<<name; cout<<“\n\t Add:”<<add; return 0; } As far as your problem goes with your original … Read more

[Solved] How does vector’s growth function work? [closed]

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[ad_1] So how is the 10000th element stored here? The element isn’t stored in the vector. It’s ‘stored’ in a piece of memory that is unrelated to the vector. Isn’t the expected behavior here a “Segmentation fault”? No. The behaviour is undefined, so there is no behaviour to expect. But the above runs successfully. That’s … Read more

[Solved] C# custom add in a List

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[ad_1] I would use a HashSet<string> in this case: var files = new HashSet<string> { “file0”, “file1”, “file2”, “file3” }; string originalFile = “file0″; string file = originalFile; int counter = 0; while (!files.Add(file)) { file = $”{originalFile}({++counter})”; } If you have to use a list and the result should also be one, you can … Read more

[Solved] program succeded in no error but this method is not working

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[ad_1] prgBar.Show() Is this what you need? Did you forget to show the new form? EDIT: I’m answering to you comment… you need a static property to access the form from somewhere else: public partial class Form1 : Form { // This is you constructor (not shown in your sample code). public Form1() { InitializeComponent(); … Read more

[Solved] IEnumerable Merge

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[ad_1] I named your first model OldCategory. Query: var categories = new OldCategory[] { new OldCategory {CategoryId = 1, SubCategoryId = 2}, new OldCategory {CategoryId = 1, SubCategoryId = 4} }; var newCategories = categories .GroupBy(_ => new { Id = _.CategoryId, Name = _.CategoryName }) .Select(_ => new Category { CategoryId = _.Key.Id, CategoryName … Read more

[Solved] Difference between pre- and postfix incrementation in C (++a and a++) [duplicate]

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[ad_1] Remember, C and C++ are somewhat expressive languages. That means most expressions return a value. If you don’t do anything with that value, it’s lost to the sands of time. The expression (a++) will return a‘s former value. As mentioned before, if its return value is not used right then and there, then it’s … Read more

[Solved] Prevent duplicates from array, based on condition [closed]

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[ad_1] You can write your own extension method that works like the built-in LINQ methods: public static class Extensions { public static IEnumerable<T> DistinctWhere<T>(this IEnumerable<T> input, Func<T,bool> predicate) { HashSet<T> hashset = new HashSet<T>(); foreach(T item in input) { if(!predicate(item)) { yield return item; continue; } if(!hashset.Contains(item)) { hashset.Add(item); yield return item; } } } … Read more