Posts by Bruno • 141 points
11 posts
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viewsA: Problem while recovering null data to a Datatable in C#
Depending on the version used in Npgsql this error may occur, one way to solve this is to treat this in your sql, instead of you sending the field as null you can change it and send blank. CASE WHEN…
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answers125
viewsQ: Setting the Row Header of a Datagrid through the rows of a Datatable column using C# WPF
I have a Datatable with the following information : Column1 | Column2 1 | A 2 | B 3 | C 4 | D With this Datatable I would like to load a Datagrid using the first column of Datatable to be the Row…
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answer751
viewsQ: Building Datagrid with C# WPF at runtime
I have a Datatable where I will store some data that the user informs and through it I want to pass the information to Datagrid. gvDados.ItemsSource = dt.DefaultView; //Essa é a ligação entre o…
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answers106
viewsQ: Report in c#
I’m trying to develop a report(report) in C# and using the ReportViewer for display. I am using the SGBD Postgresql, and I’m unable to make the connection to the database and the report, to get the…
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answers814
viewsQ: Monitoring internet connection at runtime
I’m using this method in C# to be able to identify whether or not the computer is connected to the internet private bool VerificarConexao() { if (NetworkInterface.GetIsNetworkAvailable()) { return…
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answer575
viewsQ: Problem when doing Table Insert in Postgresql
When I’m gonna make a INSERT: INSERT INTO categoria (cat_descricao,cat_status) VALUES ('não' ,'1' ) passing some element with accentuation parameter the following error occurs ERROR: 22021: invalid…
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answer81
viewsQ: Error while disconnecting from Postgresql
I am trying to make an application in C# using SGDB Postgresql, but always when I close the connection gives the following error: Undefined object reference for an object instance. I’m using the…
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answers42
viewsQ: Software license in Visual Studio
Commercializing software made in C# using WF or WPF autonomously requires some kind of specific license (I must pay for some version of VS to develop) or I can simply develop and market?
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answer278
viewsQ: Validating form with jQuery and sending to a controller in codeigniter
I want to do a validation with jQuery before sending the data to the server side, I’m using PHP with jQuery and in the form part use it: < ? php echo form_open('empresa/inserir',…
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answers2216
viewsQ: Is there a problem using Java for commercial automation application in dektop? Or is it better to do it for the web using PHP?
I’m developing a project for desktop using Javafx and Postgresql, but I started reading about Java and found many cons about this programming language (slow, for example), so I’m thinking about…
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answers6513
viewsQ: How to implement a close (close) screen event?
When I create a screen in Scene Builder in Javafx, comes as default three buttons in the upper corner of the screen that are: minimize, maximize and the close-up. My question How I can manipulate…