Questions tagged as 'webforms'

Tagged questions
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Session variable: Error: Object reference not set as (...)

Good! In a previous question I wanted to know how to keep a variable for the whole site and be able to use it when needed: Previous question But now I'm getting this error very often ... I tried this and it does not work, among many o...
asked by 02.11.2017 / 14:35
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Open asp: visible panel = true from a link in a different file

Greetings. I have 3 panels with visible=false and in .cs the method that shows one or the other according to the button that is pressed, but all this is within the same file products.aspx/.cs . What happens if I want to execu...
asked by 06.07.2017 / 19:30
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Show image from a route

I have a web form with an asp: img control in which I want to show an image, of which I only have the complete path of the file (including the file name) that is stored on the server (the path is saved in a table in the database). But I do not k...
asked by 07.06.2017 / 21:49
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The network path was not found

At the moment of giving click in the listbox where it shows me the IP address where the folder is located and see the comments that it has, it throws me the following:    IOException The network path was not found The addres...
asked by 04.07.2017 / 20:04
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Routing comes out with / at the end of the asp.net URL WEB FORM

When I route my url, it comes out in the following way (locally)    localhost: 7876 / Camino But when I upload it, it looks like this: (server)    pagina.web.com.pe/Camino / I would like the last "/" not to come out, could someone...
asked by 27.12.2018 / 15:16
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Separate a string into parts

Hello, I need to separate the full name string: in .. textbox - > name textbox - > last name I need to return it here been trying this .. EmpleadoBL empleadoBL = new EmpleadoBL(); List<EmpleadoEL> lista = emple...
asked by 18.12.2018 / 16:19
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Regular Expressions in Visual Basic.net

I am doing regular expressions in a registration form using Web forms. I would like to know if it is well done because at the time of registering nothing happens. This is my regular expression code: Dim expre_regul As String = "/^[a-zA-Z0...
asked by 19.12.2018 / 00:08
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Report with Itextsharp

Dear, I need your help, I am developing an asp.net webform, c #, MySQL and itextsharp report and I need this report to have a certain format. I retrieve the information through the database and keep it in a datatable , until there is every...
asked by 19.10.2017 / 20:00
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Problem with WebForms Visual Studio 2010 toolbox

Since a few days ago I have been working with a WebForms project of Visual Studio 2012. But today I tried to go back to work, I can not drag objects from the toolbox. I do not know how to fix it, could you help me? I already tried to reset the t...
asked by 22.11.2016 / 02:16
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How do I use a textbox for a date query?

I'm trying to work in a query to find results by date range [from - to], so I use a textbox so that enter these values and put them in dd / mm / yyyy format with javascript, my problem is that when I give it to look for it, it marks me the follo...
asked by 12.09.2018 / 22:28