Questions tagged as 'vb.net'

Tagged questions
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Conversion of jpg to avi picture set, empty video

I am developing an application that captures images of the webcamera and is called Imgp0.jpg, Imgp1.jpg But when I try to convert these images to video using ffmpeg but the video out put is empty. This is the code I use to convert Imports Syst...
asked by 14.08.2018 / 03:04
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Mapping of list with sub list of tables for class

Hello; I have always had a question in this mapping, but in the current project I need to resolve it. It's the following, I have a Message table and a user table. I need to relate the users to the messages seen, to detect if it is a new messa...
asked by 19.08.2018 / 17:04
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IF Condition in DataGridView

Hello. How can I check the first number of a row in a grid? Example: If Conversions.ToString(Me.DataGridView1.CurrentRow.Cells(0).Value)[0(primeiro número da row)] == (for igual a:) 5 Then WebBrowser1.Document.GetElementById("ibMaste...
asked by 10.08.2018 / 22:47
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Show videos from a vb.net folder

I was using the following code to display several images in a listview as if it were a library. For Each arquivos In FileIO.FileSystem.GetFiles(caminho, FileIO.SearchOption.SearchAllSubDirectories, "*.png", "*.jpg") Using str As Strea...
asked by 28.06.2018 / 00:47
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How to make an event run only when the mouse is pressed

Hello. I would like to know if VB.NET (Windows forms) has how to make an event happen only during the time that the mouse button (LMB) is pressed. For example, as long as the user holds down the mouse button, the "W" key will be sent several t...
asked by 08.07.2018 / 00:48
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Read xml in VB.net

I would like to read the line tag version="1.0.1.0" and store it in a variable in Vb.Net? <?xml version="1.0" encoding="utf-8"?> <Feed> <Tasks> <FileUpdateTask hotswap="false" updateTo="file://d:\tmp\up...
asked by 19.06.2018 / 02:30
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Filter data in BindingSource without using%

I load the data from a database into a BindingSource and use it to do searches. The same is tied with a datagridview , which returns me the requested data, at the moment I am using LIKE to do these searches, however it is not pleasing t...
asked by 15.06.2018 / 01:19
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vb.net return image field value with Null value in database Sql server 2015

I'm trying to return a Null value in the image column of image type in sql server 2015 database in visual basic (visual studio 2015), but I do not know which parameter to pass in if, because it claims the following error:    It is not possibl...
asked by 18.06.2018 / 21:59
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property of a Control (Group)

And create some properties for a TextBox , for example I created lower border for my TextBox using a Label add within TextBox Question: Do I want to know how to group these properties? See my code: Imports Sy...
asked by 12.06.2018 / 14:19
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VB-NET how to send variable value from webBrowser (page) to form variable

Access a site by WebBrowser by a form vb.net and I want to form be able to get the value of a variable and return that value to a program variable. Is it possible?     
asked by 01.06.2018 / 18:26