Questions tagged as 'visual-studio-2015'

Tagged questions
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Problems to activate Allow Unsafe. I can not run unsafe

I'm making a website published in hostlocal in C # and VisualStudio 2015. I need to set the AllowUnsafeBlocks option, for a class that uses pointers, but I can not. I'm sure it's silly, but I do not see it and I'm going crazy. When I open the...
asked by 02.11.2018 / 23:25
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I get an error with modifying database from C # [closed]

   This is my code but I do not know if there will be any problem with the sentence I have made public void modificar(Int32 cantidad, String producto, String tipo_pedido, Double total) { conexion.operacion("UPDATE pedidos s...
asked by 04.10.2018 / 02:03
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Error with Crystal Report The report could not be loaded

Currently the application is working for several users, but sometimes the system gives an error when they try to preview a report that they generate many times a day. The error generated by crytal report is "The report could not be loaded" ,...
asked by 04.09.2018 / 18:50
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Error with Insert in Postgresql in C #

I have a problem that I can not solve because I do not see the error. I am developing a simple project in C #, when I execute a stored procedure of Postgresql (Insert): pgsqlCommand cmd = new NpgsqlCommand("select insertclientes(" + @idcuenta_...
asked by 06.08.2018 / 17:30
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Event problem double click on datagrid

Hi, I have a problem that if I double-click on a datagrid header it returns an error in the CellDoubleClick event, I am interested in the event being valid for all the cells except the headers, I tried with e.RowIndex> 0 or e.RowIndex < >...
asked by 31.12.2017 / 07:12
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How to position buttons next to each other?

I am working with WPF, Visual Studio 2015, in which I want to place buttons next to each other as well as this image. I've only been able to achieve this. This is the XAML code that I am occupying, what I did was put a Grid wit...
asked by 08.10.2017 / 17:11
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How to insert data from timepicker, textbox and all the contents of a datagridview? visual studio 2015

I have a big question about ... How do I make multiple entries into my database the records that are inside my datagridview and also outside it? for example: A trip of such date that would be a data of the datetimepicker, the name that has th...
asked by 04.10.2017 / 17:27
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How to create a Switch on / off button in c #

I am trying to create a swtich on / off for a desktop opalance in C # but I do not find any recent documentation of this, only half-finished documents or the examples I have tried have not worked Currently I'm trying to control the Checbox by...
asked by 04.10.2017 / 19:17
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How to convert a table to an IEnumerable to show it in a Dropdownlistfor

Good morning, I'm learning c # ASP .NET MVC, How can you convert a table to IEnumerable to use it in Dropdownlistfor ?: I have the following model: public class Saleform { public int ID { get; set; } public in...
asked by 10.10.2017 / 00:12
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Exception from HRESULT: 0x80070002 Visual Studio

Hi, I'm working on Visual Studio and I do not know what I did now that I can not access the controllers of my project, I can run it without problem but when I try to access it the following appears ... Does anyone know what can be d...
asked by 04.01.2018 / 19:41