Questions tagged as 'vb.net'

Tagged questions
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Add new row to a Gridview Devexpress with data from a SQL query

The mechanics is the following, I click on a button and I bring some data to my BD, some of these I must add them to a grid but as a new row is to say that I can read other button and I keep adding. It is a menu and the produc...
asked by 11.05.2016 / 15:54
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Do not differentiate CFDI attribute names in XML

I'm doing an application that is responsible for separating XML files based on some parameters, that's fine, but now with the changes of the CFDI, my programming thundered, since users can have mixed the documents of cfdi 3.2 and 3.3 in the same...
asked by 23.08.2018 / 21:27
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Error VB NET - Simple game with shots

Hello, someone can help me solve the problem: When I shoot past 2 seconds nothing happens ... but when I shoot fast several bullets are paralyzed and react after: ( When firing several missiles they stop or hang only the missiles, this i...
asked by 02.06.2016 / 15:48
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Backup scheduled with timer, Threads and Delegates VB.NET

I have a system on vb.net which has the function HacerBackup() that is activated with a button and saves a backup of the database on a removable device. Then the client asked me to make automatically certain days every certain time a...
asked by 30.05.2016 / 20:46
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LINQ Join a query in a single row

I have a LINQ query to which I concatenate the values of a table in a single field to show in DataGridView Dim Consulta = (From ConsultaConceptos In ds.Tables("Concepto") Select New With { _...
asked by 28.03.2016 / 21:45
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Error saving data in SQL Server

I have been struggling with this problem for several days to see if they could give me a little help. I have this error:    "Unable to insert the NULL value in the 'CODE' column, table   'C: \ USERS \ MAICOLODALIS \ DOCUMENTS \ VISUAL STUD...
asked by 18.04.2016 / 05:28
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How do you perform this json on vb.net?

I am using the Graph API of Facebook with webhook to channel an incoming message from a page in my application. The response received from the API is as follows: { "object":"page", "entry": [{"id":"594052300785675", "time":14...
asked by 23.05.2017 / 15:28
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Change a string of a string to bold

I'm doing a program in VB and I have a text string, which I add to a RichTextBox , but I want to add some things to it. What I want to achieve is that the text be like the following: " More than most of the measurements that...
asked by 21.06.2017 / 00:15
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Hide or close an MDI Children form

Hi, I have an MDI form (frmPrincipal) where I open an MDI Children form (frmListerateClients). Within this mdi children when closing the form I launch a form (frmOpciones) that allows you to make a couple of quick procedures that you can eith...
asked by 04.07.2017 / 07:58
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Error with file on vb.net

When I opened Visual Studio and wanted to modify a form in which I was working in Design, I was shown Screenshot: But if I look at the folder, there are the files. What should I do to show me that Design again in Design?     
asked by 06.10.2016 / 19:24