Questions tagged as 'c#'

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duplicate field in query records with Entity Framework on table without primary key

Currently I have the need to connect an application to a table in a database (Oracle 11g) of other software. This table does not have a defined primary key. My Entity is this. public partial class Inacc { [Key, Column("ACCHIS", Or...
asked by 10.09.2018 / 20:51
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Assign a role to a user when registering Asp.NET MVC

I am developing an application in Visual Studio 2017. I am using Membership as it is. I need the application to show the views according to the type of user, that would be with the roles. What I need is for the user to register to select the typ...
asked by 02.09.2018 / 21:20
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Save new file or Replace existing file SQL C # .net

I'm with a project that stores documents, My question is how can I store them and that SQL tell me if the document with the same name or ID exists. This is the SQL code: USE [HConDe] GO /****** Object: StoredProcedure [dbo].[ActualizarDocu...
asked by 11.09.2018 / 13:58
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Error downloading zip files c # restsharp

I have a api rest that allows me to download through a URL records of each month, the month before the current one presents it in a .csv file and the others in zip format, the structure of the URL is for the previous month to the current: l...
asked by 11.09.2018 / 14:07
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Itextsharp Add Link to pdfstamper

I have a pdf that I upload through Pdfstamper, when I add the following code to include a link it does not work Chunk chunk = new Chunk("The Best iText Questions on StackOverflow", Fuentelink); chunk.SetAnchor("...
asked by 03.09.2018 / 14:34
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Send pdf to a WebService (.Net) from Php

Good morning, I need to send a .pdf file from a web made in php This is the code I use to send from c #: WebClient.UploadDataAsync(new Uri("http://" + Properties.Settings.Default.WebService + "/Service1.svc/UploadFile?FileN...
asked by 03.09.2018 / 16:04
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Update a list by its index

I'm working with Windows Forms I have a DataGridView object which people with a list. What I need is that when you select an element of the grid take the index and with that index do the search in the list to update a property that you have. p...
asked by 31.08.2018 / 21:28
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Open several PDF Crystal Reports in Emerging windows

I work with asp.net and C #, I am trying to generate 190 reports and only one is being generated and when trying to generate the following, I get the following error: "The server can not attach a header after sending the headers HTTP. " invest...
asked by 31.08.2018 / 21:07
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Modify files generated by CRUD from Scaffold

Good evening I would like to know how do I have to modify the template .t4 of the controller? or what you have to change to be able to generate the files with Scaffold with the custom name. The file with the name Create.cshtml is created wit...
asked by 30.08.2018 / 18:55
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Read Excel in C #

Dear that you have a good day, I am in a problem when I try to read an Excel xlsx format, I have done it before and it had never happened to me before. it turns out that it is a console application and when opening the Oledb connection it falls...
asked by 29.08.2018 / 16:45