Questions tagged as 'c#'

Tagged questions
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C # problems with. Replace () in an excel sheet

I am trying to remove the commas from a cell inside an excel file, but I have the situation that after applying my code in the first row everything is fine I have no problem, but from the second round my code will be stop completely in the same...
asked by 29.08.2018 / 16:32
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Quartz.Net how to create a reminder from any date

I am trying to generate a reminder with Quartz.Net, which can do the following, I have a date (any, it can be today, tomorrow or the day after tomorrow), the Trigger must be activated when that date arrives (for example if today is August 1, but...
asked by 27.08.2018 / 17:02
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Turn off a USB port and turn it on by C #

When I get an error in the connection, and the program restarts it does not connect automatically I have to disconnect and connect the USB port to connect. Do I want to turn off that port and turn it on by C # is it possible? using System; usi...
asked by 14.09.2018 / 19:54
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Generic validation for a MVC 5 template editor

I am working on an Editor template for an object, which must be validated independently of the rest of the form, this validation I am doing with ajax, I am a small example to show my problem. class A { public B b { get; set; } } class B {...
asked by 28.08.2018 / 16:41
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'DataSet does not support System.Nullable.' Error filling out report with Datetime Null data

I am filling out a report in crystal report with a class that has null data types in c # when I try to fill out the report I get the following error:    'DataSet does not support System.Nullable < & gt ;.' crystal report. public class...
asked by 26.08.2018 / 14:01
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How to include Crystal reports in a C # installer?

I have problems when including crystal reports since the route of the report corresponds to the computer in which the software was created and when generating the installer, it maintains that same route. I attached an error image     
asked by 26.08.2018 / 19:32
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Load specific cells from an Excel to a datagridview from winform in C #

Saudos, In a tab control I have two tabs, each has a grid the first grid must insert n number of values in specific cells of an excel and the second must receive the result of operations performed in the same excel but in another sheet and retur...
asked by 23.08.2018 / 15:29
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How to make a waterfall dropdownlist ASP.NET MVC5

I have the following code, I need that according to the selected brand shows me the class, ayudaaaa is urgent. CONTROLLER public IActionResult Index() { //Marca Task < ServicioMVCDatoAuto.TiposReferencia> TareaMa...
asked by 24.08.2018 / 15:38
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when I change the index in dropdown it recharges and does not give me the selected index

Currently I want my dropdown of the selected index to get its value and then send it to a query I have in entity framework. But the problem is that I select my dropdownList and reload and therefore lose the selected value and that's why I alw...
asked by 25.08.2018 / 14:26
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I have problems printing from a web server with IIS

I have a web application with ASP.NET MVC hosted on a server with IIS. This application should print a voucher or voucher when the user clicks on an action button. Perform the test in my development environment (local), from the visual studio...
asked by 21.08.2018 / 19:10