Questions tagged as 'c#'

Tagged questions
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Exception of type 'System.StackOverflowException' was thrown in c #

What I want to do is move from one form to another. I call from MenuForm to another call "EmfermoRep", which is fine, but the problem comes when I want to go back from "EnfermoRep" to "MenuForm". I tried to add a button and instantiate "MenuForm...
asked by 29.11.2018 / 17:50
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What is the path of the removable card (SD card) in Android? Xamarin

I need help to find the path (path) of the removable card (removable Sd card) of an android device, here the code: var list = System.IO.File.ReadLines("/proc/self/mountinfo"); foreach (var i in list) {...
asked by 13.07.2017 / 15:27
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Read Excel and pass it to a datatable keeping format

Dear, I have a query, I am trying to read an excel but the file is corrupt with a specific format but I do not have an office installed on the server, so I have to read it with closed xml and pass it to a datatable (For that reason I can not ins...
asked by 05.12.2018 / 13:03
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Error with model MVC Model.get null

I'm developing a web page with MVC, and although the connection to the database works for me (for the login) with the LINQ class and SQL Server, I do not know if the model does not load the data or the list is not adding the data of the BD...
asked by 06.12.2018 / 04:21
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Problem with stored procedures in oracle and with .net

I have a problem that does not allow me to advance in my work, I hope you can help me. I'm doing a Web API that connects to a database in Oracle, it's a simple CRUD, I've done the Stored Procedures and everything, I've tried them from Oracle...
asked by 04.12.2018 / 06:36
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Show a DropdownList in an MVC C # view using Entity Framwork-

I am trying to show a dropdownlist, of an entity that I have in my model, for that I used entityframework database first. Code in my view: <div class="col-md-10"> @Html.DropDownListFor(x => x.Nivel.NivelID, new Sele...
asked by 28.11.2018 / 13:39
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Web service in C #

I'm trying to do a web service but I get this error in the repository with the return and I do not understand why The summary error message says that as it returns void, a keyword return must not be followed by an object expression....
asked by 30.11.2018 / 01:39
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visual C # how to solve the saving of my output

It does not let me save the auto id incretable. What do I do? public string insertar(DRegistro_Salida registro_salida) { string rpta = ""; SqlConnection sqlCon = new SqlConnection(); try {...
asked by 30.11.2018 / 02:10
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filter images to put in different pdf

I am developing a small system which obtains many images from a windows folder and with these photos I must generate a certain amount of PDF's. my doubt is how to make it according to the name of the image, be saved in such and such PDF     
asked by 30.11.2018 / 01:18
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How can I convert the date correctly? without this message coming out

   Unable to convert an object of type   'System.Web.UI.HtmlControls.HtmlInputGenericControl' to the type   'System.IConvertible' using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using...
asked by 26.11.2018 / 14:33