All Questions

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Login Visual Basic with database

Good, you see I am creating a login in visual studio using SQL Server Compact but I do not know how to obtain the data resulting from the sentence and compare them, I have this: Dim sqlcon As New SqlCeConnection("Data Source=C:\Usuarios.sdf;...
asked on 08.05.2017 / 15:47
1
answer

Create Array in javascript reading from local file

I need to create an array in javascript of the style var data = [1,2,3,4]; to represent that data on a canvas. The data would be collected from a file on the desktop with an input of the file type. The content of the file would be: 1 2 3 4...
asked on 09.05.2017 / 11:53
1
answer

Configuration error. Class [com.mysql.jdbc.Driver] not found

I have the following problem I hope you can help me. I am working with Wild Hat from Red Hat, although I have already tried it on other servers such as Apache and Galssfish. already add certain jar's to the servers and nothing, believe datasorce...
asked on 05.05.2017 / 17:11
1
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problem uploading file with ftp_put ()

when using function ftp_put() of php to upload file to an ftp, it actually uploads the file, but it arrives without weight, that is 0 B, I attach the code that I am using (it is not problem of permissions of the folder where I'm sending i...
asked on 03.03.2017 / 13:22
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answer

How to program a summation of two variables in matlab

Basically I'm trying to program for the function, which is then added random noise: When M takes values of 5, 10 and 15. What I have tried is: clear all n = 0:0.16:20; k = 0; X = cos((5*pi/4)*(n-k)) + sin(2*pi*(n-k) + pi/...
asked on 06.03.2017 / 07:47
3
answers

Problems with DropDownList ASP MVC

Greetings, I have problems with a DropDownList in ASP.net MVC, the website filters the Teachers but at the time of saving gives the following error: This is the error that the System shows:    Exception Details: System.NullReferenceExcepti...
asked on 03.03.2017 / 14:41
2
answers

How to add buttons for each record, with angular-datatablejs?

I have the following table that filled it this way <div class="panel-body"> <script type="text/javascript"> jQuery(document).ready(function($) { $("#example-1").DataTable({ "ajax": {...
asked on 06.03.2017 / 06:27
1
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Get width and height of an external image with Javacript

I want to save in some variables the height and width of an image that is loaded through Javascript (no libraries, plugins, frameworks, etc) using your url. img[i].addEventListener('mouseover', function(){ link = this.parentElement.href;...
asked on 06.03.2017 / 06:53
1
answer

Division between double values returns 0

I am writing a Java code consisting of several simple mathematical operations (divisions and multiplications). It is a problem of Physics. It turns out that when calculating certain operations, with values already obtained, the results of the...
asked on 04.03.2017 / 11:52
1
answer

Problems with the differences of an Activity and DialogFragment

I have a problem and I can not solve it in any way. I used to have a Activity called MasInformacion and did the following: public class MasInformacion extends Activity { private TextView editTextNombre ,editTextFecha, edi...
asked on 02.03.2017 / 23:39