How to call a button click event when i click another button in c#

Question

I have 2 buttons in my win app.

Button1 do a task :

private void button1_Click(object sender, EventArgs e)
{
    progressBar1.Value = 0;
    String[] a = textBox7.Text.Split('#');
    progressBar1.Maximum = a.Length;
    for (var i = 0; i <= a.GetUpperBound(0); i++)
    {
        ansh.Close();
        progressBar1.Value++;
    }
}

Button 2 do following

private void button2_Click(object sender, EventArgs e)
{
    foreach (string item in listBox2.Items)
        textBox7.Text += item.Contains("@") ? string.Format("{0}#", item.Split('@')[0]) : string.Empty;
}

I just want to use just one button for two events.

But I want the event of button2 to be called before event that was called by button1.

Means I want to use just one button instead of button 1 and 2.and when I click I want first thing to be done is getting listbox items in a textbox.

{
    foreach (string item in listBox2.Items)
        textBox7.Text += item.Contains("@") ? string.Format("{0}#", item.Split('@')[0]) : string.Empty;
}

and then the event of starting progress bar and closing connection x.

progressBar1.Value = 0;
String[] a = textBox7.Text.Split('#');
progressBar1.Maximum = a.Length;
for (var i = 0; i <= a.GetUpperBound(0); i++)
{
    ansh.Close();
    progressBar1.Value++;
}

A good solution would be to extract the functionality into methods and call the methods inside the button handlers. This way you don't need to fire the click event, but to call a method. Is is also easier to maintain. — keenthinker
– keenthinker, Commented May 10, 2014 at 12:14

foolsoft · Accepted Answer · 2014-05-13 06:10:27Z

14

You can use PerformClick method of button object

    Button button1 = new Button(), button2 = new Button();
    button1.Click += new EventHandler(button1_Click);
    button2.Click += new EventHandler(button2_Click);

    void button1_Click(object sender, EventArgs e)
    {
        /* .................... */
        button2.PerformClick(); //Simulate click on button2
        /* .................... */
    }

    void button2_Click(object sender, EventArgs e)
    {
        /* .................... */
    }

answered May 13, 2014 at 6:10

foolsoft

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1 Comment

Jeff Roe Over a year ago

It should be noted that PerformClick will not always work. For example, if "CanSelect" is false (because the button is not visible, for example) PerformClick will do nothing.

Grant Winney · Accepted Answer · 2014-05-10 12:22:33Z

I'd suggest removing the logic from behind the click events into separate methods.

private void MethodOne()
{
    progressBar1.Value = 0;
    String[] a = textBox7.Text.Split('#');
    progressBar1.Maximum = a.Length;
    for (var i = 0; i <= a.GetUpperBound(0); i++)
    {
        ansh.Close();
        progressBar1.Value++;
    }
}

private void MethodTwo()
{
    foreach (string item in listBox2.Items)
        textBox7.Text += item.Contains("@") ? string.Format("{0}#", item.Split('@')[0]) : string.Empty;
}

private void button1_Click(object sender, EventArgs e)
{
    MethodTwo();
    MethodOne();
}

private void button2_Click(object sender, EventArgs e)
{
    MethodTwo();
}

In my experience, it's easier to maintain and test this way. Having different controls' events all calling each other makes it tougher to follow the logic.

Selman Genç · Accepted Answer · 2014-05-10 12:12:28Z

3

You can trigger the click event of Button2 manually:

private void button1_Click(object sender, EventArgs e)
{
    button2_Click(sender,e);
    ...
}

answered May 10, 2014 at 12:12

Selman Genç

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Comments

Ranjan Kumar · Accepted Answer · 2014-05-10 13:40:08Z

2

Just in case you neen events:

Button1.click += method1;
Button1.click += method2;


void method1(object sender, EventArgs e)
{
    // do your stuff
}
void method2(object sender, EventArgs e)
{
    // do your stuff
}

answered May 10, 2014 at 13:40

Ranjan Kumar

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