Visual studio winforms create text box from database

Visual studio winforms create text box from database update#
Visual studio winforms create text box from database code#

In other words, when you create a second instance of Form1 inside of Form2, it has nothing to do with the original instance of Form1 that you started out with.

Multiple instances of a class do not automatically share data between them.

Visual studio winforms create text box from database update#

If you're trying to create a new instance of a Form in order to update it, you're making a fundamental mistake about how class instantiation works.

Visual studio winforms create text box from database code#

Look at the code in the btnSaveInput_Click() event method above. Form2 has a couple TextBox controls for accepting user input, and a button to close the Form and вЂњSaveвЂќ the inputДЄ Form is just another class, and in order to change the properties of any class, you need to have a reference to the particular instance you wish to modify.Form1 starts with the program, and contains a DataGridView and a Button for opening Form2.Or maybe the first Form takes some action on the data from the second Form, like saving it to a file. The first Form displays the data collected in the second Form, maybe in a DataGridView or just some Labels. Private void btnSaveInput_Click(object sender, EventArgs e)ДЇorm1.? // How do I show my values on the first form? Private void btnGetUserInput_Click(object sender, EventArgs e) How do I get what the user entered back into the first Form? public class Form1 : Form Here's is my code but it's not working as expected. When they're done and close it, I need to pass those values back to the first Form. The second Form collects input from the user in some TextBox controls.

The first Form has a button for opening the second Form. Let's mockup a question first - this is pretty typical of the questions I see: I have two Forms. How do I enter data into a form, and then close it and display it in my first form?Д®very program's different, but this particular issue has a few practical, common solutions.How do I get the contents of a from another form?.How do I access data from Form1 (or Form2) in Form2 (or Form1)?.I see this question asked a lot, and it's usually one of these slight variations: Note: All the following code is available on Github. You might want to save the changes to a database at this point, but more often you'll just want to pass the data back to the original Form that created the one that was just closed. After the user enters the requested data, or makes changes to that record, and presses your OK button to close the current Form, their changes are lost unless you do something with them first. Functions like collecting data from the user, or displaying a record from the database for the user to edit. True to its name, most things you do in WinForms revolve around Forms, and the creation of multiple Forms for performing different functions. Many businesses still have legacy apps built with it, and its drag-and-drop interface makes it easy to use in a classroom setting too.

But it works and it's quick to spin up a new program. Yes, WinForms is an older technology, and no, there's nothing particularly sexy about it.