11969 3
How to check if string is number (IsNumeric) in C#?

I have a string "123" and another string "Test", now I want to identify from which you these string conatins number, so How can i check if string is a number or not in C#, is there any method in C# or we need to create custom method for it?

Example :

"11" = true

"Hello"= false

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Type
Question
11716 3
Error : Keyword not supported: 'metadata'

I was trying to use Hangfire.IO in my MVC ASP.NET boilerplate application and pasted this code in Startup.cs as explained here in tutorial

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Type
Question
11701 2
How can I sort alphanumeric string list in C# (With & Without LINQ)?

I have a requirement in my project, in which I need to sort the string which has alphanumeric data like below

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Type
Question
11685 0
How to write to excel in C#? ( Text, adding images / styling in Excel)
In this article, I have explained how you can create excel or write to excel file using C# and EPPlus library, which also show how to add images in excel, merge columns, style text, using EPPlus
Type
Article
11647 2
Read file in C# (Text file .NET and .NET Core example)
In this article, I have explained and provided code to read text file in C# ( line by line or complete text file into string) using Console application example in .NET Framework and .NET Core.
Type
Article


11620 1
Error : An asynchronous operation cannot be started at this time

When I am trying to call async method in Class from controller, I am getting the error as below

An asynchronous operation cannot be started at this time. Asynchronous operations may only be started within an asynchronous handler or module or during certain events in the Page lifecycle. If this exception occurred while executing a Page, ensure that the Page is marked <%@ Page Async="true" %>

How can I resolve this error, here is my Current code

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Type
Question
11561 2
how to implement switch case in Razor (.cshtml)?

I need to implement switch case in Razor C# page as if-else would not be a good idea, because it will create too many conditions, so i thought to create Switch case instead, here is my current code, but it throwing syntax error

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Type
Question
11501 3
Multiple actions were found that match the request: in web api C# ?

HI, I am trying to work with the Web API in C#, and when calling it using jquery I am getting the error "Multiple actions were found that match the request: in web API C#", so how to resolve this issue, here is my current code

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Type
Question
11396 3
Convert string of "dd/MM/yyyy" format into Datetime using C#?

I am using the code below to convert my string which is in the format "dd/MM/yyyy" into datetime

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Type
Question
11305 2
How to convert a positive number to negative number and negative to positive in C#?

Hello, I would like to know, How can I convert a positive number ( int type) to a negative number in C# and vice-versa ( negative to positive number using C#)?

 

 

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Type
Question

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