The best way to move controls on C# is to change your position within your container (form, panel...).I' use the method as an example KeyDown the form, so every time you press an arrow with the active form the button would move:private void MainForm_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Up) //Pulsas flecha arriba { boton1.Top -= 1; } else if (e.KeyCode == Keys.Down) //Pulsas flecha abajo { boton1.Top += 1; } else if (e.KeyCode == Keys.Left) //Pulsas flecha izquierda { boton1.Left -= 1; } else if (e.KeyCode == Keys.Right) //Pulsas flecha derecha { boton1.Left += 1; } } With this method you will move the button to the position you click on the 1 pixel keyboard.Remember to mark the property of the form KeyPreview Like True, since without that you will never invoke the event KeyDown the form.

You can prevent the closure of the form frm_horarios effectively discard the object. To do this, you can add an event FormClosing:private void frm_horarios_FormClosing(object sender, FormClosingEventArgs e) { e.Cancel = true; // Cancelas el evento de cerrado this.Hide(); // Ocultas el formulario sin desecharlo } Another way to do this would be to open the secondary form as dialoguewith changing only one line of your code:private void btn_horarios_Click(object sender, EventArgs e) { // Con menos líneas puedes obtener el mismo resultado: if (horario == null) horario = frm_horarios.getFormularioHorario(); horario.ShowDialog(this); // ^ En lugar del método "Show", usar ShowDialog }

The mistake in your code is on condition; it should be like this:if ((diametromenos <= ValDiamEx) && (ValDiamEx <= diametromas)) { // dentro del rango } else { // fuera del rango } If you want to make it beautiful, you can create a method to indicate if a value is within a range:public bool InsideRange(decimal p_Valor, decimal p_CotaInf, decimal p_CotaSup) { return (p_CotaInf <= p_Valor) && (p_Valor <= p_CotaSup); } In your case we'd call it that:if (InsideRange(ValDiamEx, diametromenos, diametromas)) // dentro del rango } else { // fuera del rango } However your ValDiamEx value will always be within the tolerances, as you are creating them based on the ValDiamEx value.

There are several ways to do this:If you have a URL you can implement this solution: https://stackoverflow.com/a/1735477/4717133 [Translation] Is that route always a file route? Or can it be a URL? It should be quite simple to configure a localhost temporary web server using HttpListener (or similar), which transmits the file in response to a http request.Another possibility would be the pipes with a name; I wonder if you can convince the control to open a pipe with a name like a file. (they have a logical file route, after all). However, I barely touched them, so I can't say 100% if it would work.You can also make use of Embedded Resource: https://social.msdn.microsoft.com/Forums/vstudio/en-US/1de60b6b-fc8b-48a5-b41f-1a3d25756700/embedded-flash-object-in-my-c-app?forum=csharpgeneral [Translation] ResourceManager.GetObject does not work if you have just configured the compilation action in "Incrusted resource". You need to use a sequence:System.Reflection.Assembly thisExe; thisExe = System.Reflection.Assembly.GetExecutingAssembly(); System.IO.Stream file = thisExe.GetManifestResourceStream("Namespace.Filename"); byte[] data = new byte[file.Length]; file.Read(data, 0, bytes.Length); [Translation] Instead of setting up the build action, you can open Propiedades/Recursos.resx and add the file. Then you can access the resource directly with:byte[] data = Properties.Resources.Filename; You can adapt it to your needs.

I put it as an answer to make it look better at the code.The problem is that in all your events, in the sum of the text Parseados a Float, in the last term you pass it to String before completing the sum.Here...float.Parse(wsNumeric11.Text).ToString()); I mean, concatenate your numerical result to "0,00"(string)You can put a parenthesis before you convert it to fit, and then convert to string. ...float.Parse(wsNumeric11.Text)).ToString();

Did you notice if the data was updated in the SQL? Because what may be happening is that the data if updated in the SQL, but not in the view, already the DataGridView still having as a reference the data you passed on to him Form1_Load. What I recommend is to do the same thing you did in the Form1_Load after inserting the data. The right way is to make a function that for example is called ActualizarDGV()Basically you'd have something like that.Form_load()private void Form1_Load(object sender, EventArgs e) { //Es aquí donde vamos a cargar el dtg ActualizarDGV() } UpdateDGV()private void ActualizarDGV() { //creamos bien hermoso el dataset ds = new DataSet(); //acá agregamos la carga de la consulta al dtg ds.Tables.Add(conexionSQL.Query()); //establecemos el origen de los datos dtgClientes.DataSource = ds.Tables[0]; } And finally you add it to the end of the button code to update, and I think it would already be!private void btnInsertar_Click(object sender, EventArgs e) { Persona p = new Persona(); ConexionSQL sql = new ConexionSQL(); string nombre = txtNombre.Text; string apellido = txtApellido.Text; string mail = txtEmail.Text; long tel = Convert.ToInt64(txtTelefono.Text); bool idBorrado = false; p = new Persona(nombre, apellido, mail, tel, idBorrado); sql.insert(p); ActualizarDGV() } I hope I helped you!

Let's see your code...//recorremos el archivo while ((line = file.ReadLine()) != null) { System.Console.WriteLine(line); //a este objeto (que feo nombre) le cambiamos esta propiedad obj.SeqTransit = line; //agregamos este objeto a la lista... lstInfo.Add(obj); counter++; } that is.. we always add the same object to the list.. and the object has as property SeqTransit always the same!!!what you have to do, it's a new object in every spin and that adds it to the list. .while ((line = file.ReadLine()) != null) { System.Console.WriteLine(line); obj = new obj(); obj.SeqTransit = line; lstInfo.Add(obj); counter++; }

Try sending a lambda function to the builder and inside the lambda you run the method like this: Task oTask =new Task(()=>{ MySqlConnection(conn,file); }); //.. In the way it does, you're passing the result of the MySqlConnection function that function does not return anything, it throws the mistake.

I don't know if I understood your problem well, but I think you're looking for the DataGridView to be filled with the selected values, you could do it the following way, I'll leave you all the code you use for this little example:public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { cargarComboOrigen();// solo carga el combo de origen y dejo la responsabilidad de cargar los otros combos al combo anterior } private void cargarComboOrigen() { cbo_origen.Items.Add("Quito"); cbo_origen.Items.Add("Guayaquil"); cbo_origen.Items.Add("Cuenca"); } private void cargarComboDestino() { cbo_destino.Items.Add("Quito"); cbo_destino.Items.Add("Guayaquil"); cbo_destino.Items.Add("Cuenca"); } private void cargarComboAsientos() { cbo_asiento.Items.Add("1"); cbo_asiento.Items.Add("2"); cbo_asiento.Items.Add("3"); cbo_asiento.Items.Add("4"); cbo_asiento.Items.Add("5"); } private void cbo_origen_SelectedIndexChanged(object sender, EventArgs e)//evento que se activa cuando hay un cambio en el index del combobox { if (cbo_origen.SelectedIndex != -1) // para validar que seleccino algo y asi cargar el combo de destino cargarComboDestino(); } private void cbo_destino_SelectedIndexChanged(object sender, EventArgs e) { if (cbo_destino.SelectedIndex != -1) cargarComboAsientos(); } private void cbo_asiento_SelectedIndexChanged(object sender, EventArgs e) { if (cbo_destino.SelectedIndex != -1 &amp;&amp; !String.IsNullOrWhiteSpace(cbo_destino.Text)) // valido que el combo se alla desplegado y seleccionado algo dgv_venta.Rows.Add(new object[] { cbo_origen.Text, cbo_destino.Text, cbo_asiento.Text, (Convert.ToInt32(cbo_asiento.Text) * 1000) }); } and this is what you would see in a form:

If you are doing it with VS, select the form, right click, properties, go to events and double click on FormClosing. This will create the bindings, and the method of that EventListener.This would be the code within the form1_FormClosing method:e.Cancel = true; Hide(); new Formulario2().Show();

You can create a public property that exposes the Listbox outside the limits of the user control.This example requires the name of Usercontrol Whatever. MiUserControl and have a ListBox Call listBox1.public partial class MiUserControl : UserControl { public MiUserControl() { InitializeComponent(); } // Aquí comienza la declaración de la propiedad pública // Estos dos atributos permiten que la propiedad sea mostrada // en la ventana de propiedades del diseñador. [Description("El ListBox que está dentro del UserControl.")] [Browsable(true), EditorBrowsable(EditorBrowsableState.Always)] // Esta es la propiedad en sí public ListBox ListBoxItems { get { return listBox1; } } // Hasta aquí la declaración de la propiedad } It is worth noting that the property created is read-only (no setter) to prevent the ListBox can be replaced from outside with a code similar to this miUserControl1.ListBoxItems = new ListBox();. This does not affect the ability to add / remove items.That's how it looks in the property window

If you could tell us a little more than what happens in your application...I think you have a form and a DGV in the same form and that by pressing a button to send the data, you want the DGV to be updated automatically. Am I right? Or how does your database get new data?

A suggestion to resolve this is as follows:Use the event Leave which occurs when the textbox is abandoned or loses focus.Create a method ContadorDeBultos to check the textbox txtbCantTubo.., count and assign the result to txtbBultosTotal.Invoking the method ContadorDeBultos at the event LeaveFor example: //Este es el método contador de bultos private void ContadorDeBultos() { int cantidad = 0; cantidad += (txtbCantTubo1.Text.Length &gt; 0) ? 1 : -1; // Ten en cuenta que la instrucción anterior es equivalente a // if (txtbCantTubo1.Text.Length &gt; 0) // { // cantidad++; // } // else // { // cantidad--; // } cantidad += (txtbCantTubo2.Text.Length &gt; 0) ? 1 : -1; cantidad += (txtbCantTubo3.Text.Length &gt; 0) ? 1 : -1; cantidad += (txtbCantTubo4.Text.Length &gt; 0) ? 1 : -1; cantidad += (txtbCantTubo5.Text.Length &gt; 0) ? 1 : -1; cantidad += (txtbCantTubo6.Text.Length &gt; 0) ? 1 : -1; //esta comprobación es por si se pasean por todos los textbox sin escribir nada if(cantidad &lt; 0) { cantidad = 0; } txtbBultosTotal.Text = cantidad.ToString(); } Already with the method that makes the account, what is missing is to invoke it in the events private void txtbCantTubo1_Leave(object sender, EventArgs e) { ContadorDeBultos(); } I'm telling you, in this case, you can assign the same event handler in all of the txtbCantTubo....As an additional control measure, you can invoke the method ContadorDeBultos() anywhere else you consider necessary. For example, in a general validation method prior to saving the information.It should be noted that my proposal is a possible solution, but it is not the only one.Update (subscriptions to events)I suspect that the mistakes you mention in your comment are related to the subscription to events. That operation you describe makes me think that the subscription is missing in the first 3.In addition to creating the method txtbCantTubo1_Leave, it is also necessary to establish a kind of mapping between the method and the corresponding event.To do that, select the txtbCantTubo... (one at a time) and check in the property window, in the event section, that the Leave event is associated with the corresponding method, as shown by the following image: You can create a single method txtbCantTubo_Leave and associate it in the 6 txtbCantTubo. But the association must be in the 6.

The keyword to use is not Datasource It is Data Sourcestring connectionString = string.Format("Data Source={0};Initial Catalog={1};User ID={2};Password={3};", cboServer.Text, txtDb.Text, txtUser.Text, txtPassword.Text); https://www.connectionstrings.com/all-sql-server-connection-string-keywords/

I did tests and the format is applied regardless of whether I assign it via the DataGridView property code or interface.Please review the statement of the variables you add in each column and ensure that those you want to display in currency format are of a type of numerical data as int, Decimal, etc. because if they are of type string or object containing string The format will not be applied to you.For example:string devengado = "1530"; //a esta NO se le aplica formato decimal devengado = 1530; //a esta SI se le aplica formato

The usual is that an application works on the same thread all the time, but when you use multi-threading, either through BackgroundWorker, Task, Thread or others, new threads are created and those new threads cannot modify the main thread, which is the one that handles the user interface, so that message appears, because you try to do something with an element of the interface from a thread different from that of it. .The classic solution to this problem can be summed up to put your calls into this:Application.Current.Dispatcher.Invoke(new Action(() => { //INSTRUCCIONES A LA UI })); And ready, with this you are telling the compiler to execute your instructions in the main thread, it is not necessary to put all the contents of a method, just the part that has to do with the interface.

You can make use of Hashtable that allows you to create a list [key,value] as follows:// Creamos nuesto hashtable Hashtable HT = new Hashtable(); // Añadimos nuestro jugador y los puntos HT.Add(cmb_idjugador.Text, 0); When you want to go by adding the points that a player wears it would be enough to do a method that adds the points and we can also take advantage of it so that if there is no player in our Hashtable because add it, it would be like this:public void AddPointsToPlayer(string p_ID, int p_Points) { if (HT.ContainsKey(p_ID)) // Si lo tenemos en el Hashtable sumamos los puntos { HT[p_ID] = Convert.ToInt32(HT[p_ID]) + 1; } else // Si no, añadimos el jugador y los puntos { HT.Add(p_ID, p_Points); } } Finally, it is enough that you collect your datagridview and that in that loop you go making the call relevant to the method created. In the end you have a Hashtable with all the information you need and access directly to the value by passing the key that in this case is the player's ID.

Try this...if (reader.HasRows) { while (reader.Read()) { tbId.Text = reader.GetString(0); ..... } } else { Console.WriteLine("No se encontraron filas."); } reader.Close();

The property TopMost the form allows you to place your form in the foreground, above the other applications, provided that another application does not do the same, at a time later than yours did. The code would remain as follows:private void Update_Shown(object sender, EventArgs e) { this.TopMost = true; } You can try to update the property periodically, to ensure that your application is always in the foreground.

That depends on which timer you are using, in .net framework there are at least four timer classes.Timers using threads:System.Timers.Timer System.Threading.Timer System.Web.UI.Timer (ASP.NET) Timer that does not use threads:System.Windows.Forms.TimerThe latter works using the Windows message cycle, that is, that the timer event will be treated in the same thread in which the other window events are treated (keyboard, screen drawing etc), and will not allow to treat user events or screen drawing while a timer event is being treated.With such a timer your vantana message line looks more or less like this:WM_KEYBOARD - reproductive user typed something WM_PAINT - PHP there is something that painting on screen WM_MOUSEMOVE -- censorship mouse moved WM_TIMER - PHP there is a timer event pending Another disadvantage of this timer is that, having to wait for other message queue events to be treated, it is much less accurate than their counterparts with threads.The main advantage is that implementation is easier. For timers with threads you have to think about synchronization, deadlocks, race-conditions (no idea how to say that in Spanish), etc.