This is related to an earlier question on binding a dropdownlist from a database. The dropdownlist is being bound and populated but is throwing an “Object reference not set to an instance of an object” error in the browser when submitting the form.
I have two <select> controls being used as dropdowns: one with a collection of cities, and the other with a list of hotels. What I would like is that, when the user changes the selected city, the hotels dropdown updates to only show hotels in that city. The drowpdown with the cities is populating successfully; however, I can’t seem to get an event to fire when the city is changed.
I’m currently using this article in an attempt to connect my ASP.NET Core project to my MySql database, and installed the NuGet package “MySqlConnector” as it said. The article then says to add this line to the “ConfigureServices” function in Startup.cs.
I have been trying to find out the issue for the whole day and couldn’t figure it out.
This is my SignalR Hub (BlazorServerAppHub.cs)
I want to add string value from the database to the string with @ as seen at the code below. However, I keep getting an error such as ; expected and I try to find the answer through other post but it does not seem like there is not. Is there any way I can input the value inside the string with @?
I’m new to C# and visual studio, I started learning recently…at the moment I’m trying to make one button that counts the number of clicks and a text box which you can type in any number and it will be reflected in the button counter while adding 1, right now it works but I want the button to add 1 every time you click, here is my code,
I’ve been following several tutorial on integrating the OWin identity in my ASP.net app, for instance this one
In my doctor table I have 3 columns named start time, end time and duration.
I’m new to C# and currently I’m trying to make 2 simple textboxes for weather, one to have the temperature in Celsius, and the other textbox have the temperature in Fahrenheit, what I wanna do is make the user type the temperature in any textbox and the other will calculate and convert it like from Celsius to Fahrenheit and vice versa,
How to get many times are matched from keywords for each matched record from csv files.