CODEWITHSUNDEEP
c#winforms
Arash
Arash

Reputation: 3051

how can i call a method using button

i have a simple question:i have for example 

public int X(int a,int b)
{
}

now how can i call this when click button?i mean when i click the button,X() call and work,thanks for your helps

Upvotes: 0

Views: 27791

Answers (5)

Oded
Oded

Reputation: 498904

You need to make the method call in the event handler for the button click.

In Visual Studio, when in the designer if you double click on the button, an empty click event handler should be created and hooked up for you.

private void Button1_Click(object sender, EventArgs e)
{
     // Make call here
     X(10, 20);
}

I suggest you read this whole topic in MSDN (Creating Event Handlers in Windows Forms).

Upvotes: 6

Mark Robinson
Mark Robinson

Reputation: 13278

Add your X() method as a delegate to the button click event:

public partial class Form1 : Form
{
  // This method connects the event handler.
  public Form1()
  {
    InitializeComponent();
    button1.Click += new EventHandler(X);
  }

  // This is the event handling method.
  public int X(int a,int b) { } 
}

Upvotes: 1

Rajesh Kumar G
Rajesh Kumar G

Reputation: 1534

call the function in the button click event

for ex :

    private void button1_Click(object sender, EventArgs e)
    {

        int value =  X(5,6);
    }

Upvotes: 3

Adriaan Stander
Adriaan Stander

Reputation: 166336

private void button1_Click(object sender, EventArgs e)
{
   int retVal = X(1,2);
}

or if this is part of a class

public class Foo
{
    public int X(int a, int b)
    {
        return a + b;
    }
}

then something like

private void button1_Click(object sender, EventArgs e)
{
    int retVal = new Foo().X(1, 2);
    //or
    Foo foo = new Foo();
    int retVal2 = foo.X(1, 2);
}

or if it is a static member

public class Foo
{
    public static int X(int a, int b)
    {
        return a + b;
    }
}

then something like

private void button1_Click(object sender, EventArgs e)
{
    int retVal = Foo.X(1, 2);
}

Upvotes: 3

Darin Dimitrov
Darin Dimitrov

Reputation: 1038710

It looks like this is an instance method. So the first thing is to obtain an instance of the class containing this method. Once you have an instance you can invoke the method on it:

var foo = new Foo();
int result = foo.X(2, 3);

If the method is declared static you no longer need an instance:

public static int X(int a,int b)
{
}

and you could invoke it like this:

int result = Foo.X(2, 3);

Upvotes: 2

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