[ad_1] You need to say query = query.Where(x => x.STUDENT_LAST_NAME.StartsWith(“Lewis”)); instead of just query.Where(x => x.STUDENT_LAST_NAME.StartsWith(“Lewis”)); 2 [ad_2] solved LINQ ignoring where clause with method syntax [duplicate]
[ad_1] When you run CallMethod0, it returns a string. You need to store the result to a string variable, and then Console.Write the variable. Since you have the method call in there twice, it is running twice. In other words, change it to: public static void Main(string[] args) { Console.WriteLine(“Hello world!”); string result = CallMethod0(); … Read more
[ad_1] Though the other answers supplied are effective enough, I would like to supply a thorough answer to assist at more than just the current syntactical level of C#. For example; Linq wasn’t available prior to 3.5. IS Keyword Checks if an object is compatible with a given type, or (starting with C# 7.0) tests … Read more
[ad_1] In c# assigning a value to a variable also returns a value. Usually it is the value that is assigned Here is an assignment, the current time is assigned to the now variable: DateTime now = DateTime.Now; This assignment also results in a returned value of the current time. It means you can legally … Read more
[ad_1] Both are same. fail is a typical function where is ‘!’ is an overloaded operator. You may want to check reference http://www.cplusplus.com/reference/ios/ios/fail/ before posting. 1 [ad_2] solved What’s the difference between cin.fail() and !cin in C++?
[ad_1] ? is not the operator, the combination of ? and : is the operator, called ‘ternary operator’. The ternary operator is an operator that takes three arguments. The first argument is a comparison argument, the second is the result upon a true comparison, and the third is the result upon a false comparison. If … Read more
[ad_1] There are lots of problems in your code: If you create something with new, you have to call also delete on that object the_field should be private you don’t need to define i and j in the class, because they are defined in the for loop already you are ignoring what does the create_field() … Read more
[ad_1] The gets function expects s to point to a character array that can accept a string. But in this case, s is uninitialized. So gets tries to dereference an uninitialized pointer. This invokes undefined behavior. If you were to set s to point to a preexisting array or if you used malloc to allocate … Read more
[ad_1] There are several problems with your translation of the code from that answer, including one fairly obvious error in the answer itself, which is that the second if (if token is ‘[‘) should be else if. But note that the condition in the first if is if token is operand, but your translation is, … Read more
[ad_1] The problem is that you need to provide a lambda expression for the second argument of ToDictionary. ToDictionary also returns a Dictionary<T, U> so you won’t be able to assign it to an instance of ConcurrentDictionary<T, U>. This should do the trick: var dicFailedProxies = File.ReadLines(“failed_proxies.txt”) .Distinct() .ToDictionary(line => line, line => 0); Of … Read more
[ad_1] Try something like this: Global.dbCon.Open(); List<int> idQuestions = new List<int>(); kalimatSql = kalimatSql; Global.reader = Global.riyeder(kalimatSql); if (Global.reader.HasRows) { while (Global.reader.Read()) { int idQuestion = Convert.ToInt32(Global.reader.GetValue(0)); idQuestions.Add(idQuestion); } } Global.dbCon.Close(); foreach (int id in idQuestions) { messageBox.Show(id.ToString()); } What we are doing here is adding all of the question ids into a list and … Read more
[ad_1] The error is essentially “Cannot convert from SymmetricSecurityKey(string) to IEnumerable<SymmetricSecurityKey>”. This means that the IssuerSigningKeys is expecting an IEnumerable (List or Array) of SymmetricSecurityKey instead of a single value. The fix is easy, give it an array: services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(options => { options.TokenValidationParameters = new TokenValidationParameters { ValidateIssuerSigningKey = true, IssuerSigningKeys = new[] { new SymmetricSecurityKey(key) … Read more
[ad_1] Try this: List<tblUsersTypeC> usertype = userToInsertList.Select(o => new tblUsersTypeC() { isPrivite = ((o.Counts.FollowedBy + o.Counts.Follows + o.Counts.Media) == 0), UserName = o.Username, WebsiteUrl = o.Website }).ToList(); 4 [ad_2] solved cannot convert from ‘void’ to ‘project.Models.tblUserTypes.tblUsersTypeC’
[ad_1] Method 1: Think of how you would compute 500! / (20! * 20! * 20! * …) normally. Don’t multiply everything out and divide at the end. Do your divisions in the middle. Then combine this with the modulus reductions from your previous question. Method 2: Prime factorize 500! and 20!. Then subtract out … Read more
[ad_1] Should be: #include<stdio.h> int main() { int i, j, n; scanf(“%d”,&n); for (i=0;i<=n;i++){ for (j=0;j<=i;j++){ printf(“*”); } printf(“\n”); } return 0; } You forgot to tell scanf you were reading in an integer by using the %d argument 2 [ad_2] solved printing too much stars [closed]