Questions tagged as 'vb.net'

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Problem connecting mysql database on vb.net

Greetings, I have wanted to connect a mysql database in an easy way to a DataGridView, but when I want to connect it in Visual Studio I always get an error. I have reviewed everything and it does not have any error, the MySql connector...
asked by 12.03.2017 / 20:24
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Foreign Key Constraint

I have a problem with a database (.sdf) in Visual Studio 2012 I have the following tables: The primary key of branches I have related to the field Branch in the table Cars The problem is that I enter a record in the table Branches with...
asked by 09.03.2017 / 01:40
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New List (Of T) of a Type passed as a parameter

I have a form that collects information for a specific table. The requirements have changed and you can now pick up from another table. The tables have exactly the same structure so I want to take advantage of the form to store in both tables...
asked by 06.03.2017 / 08:45
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save data data in sql server VB

Hi, I'd like you to help me, I'm wanting to log into my datagridtw to a sql server table Using Con As New SqlConnection(ConfigurationManager.ConnectionStrings("conexion").ConnectionString) Con.Open() Using c...
asked by 24.02.2017 / 01:17
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Error: Crystal Reports - "errorKind"

I have a report made in Crystal Reports. The report works well, but this error appears when generating the report: According to the error message, an error is shown in the formula that I give below: if {registros1.subcartera}= 'CARTA...
asked by 23.02.2017 / 15:33
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Panel with another larger panel inside

I am creating a user control in windows forms , that user control has two zones, the upper zone where there is a descriptive text and a forward button and another one to go backwards. In the lower area there is another panel that occupi...
asked by 20.03.2017 / 15:54
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Problem with TransactionScope .Net SqlServer

Usually I use TransactionScope for my developments but in this case I find something strange. I have to update in the tables of Order headers and order lines the delivery date when the user makes a reading of the barcode of the document in quest...
asked by 22.02.2017 / 07:09
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Hide and re-display the layers of a PDF in the Acrobat panel

I am using iTextSharp 5.5.10.0. I have a PDF with several layers resulting from having joined several files. When I open it with Acrobat Reader, the layers and the original names of the files that I joined appear. First problem: If I us...
asked by 22.02.2017 / 09:56
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Replace tabs with commas in a .csv file

I have a .csv file that represents a table with 12931 entries. For example: ID A B C 1 9 hola despues de hola va una coma 383 2 8 esto es sin comas 383 3 2 hola los tabs en este campo son una coma estoy en B 383 We...
asked by 06.02.2017 / 17:33
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Show Listing in a DatagridVieW vb

Well I tell you that I'm making a file listing in a datagridView for them I am using the tools of: Sql server Visual Basic Window Form If you show me, but when I click on it, it generates and opens several forms like the image. How could I...
asked by 15.02.2017 / 21:19