c# - Form does not contain a definition for btnCalc_Click and no method extension

Question

I am wanting to put Event KeyDown for when the user. Click on one button of the KeyBoard, and it will do something.

But It's not working, it says that my Form does not contain a definition for the button(btnCalc_Click) and no method extension .

My code is :

  private void Form1_KeyDown(object sender, KeyEventArgs e)
        {

            if (e.KeyCode == Keys.Delete)
            {
                if (btnLimpar.Enabled)
                {  
                    btnLimpar.PerformClick();
                }
                else
                {  
                    this.btnLimpar_Click(null, new EventArgs());
                }
            }

            if (e.KeyCode == Keys.End)
            {
                if (btnCalcular.Enabled)
                {
                    btnCalcular.PerformClick();
                }
                else
                {
                    this.btnCalcular_Click(null, new EventArgs());
                }

            }

        }

It get's wrong in the code : this.btnCalcular_Click(null, new EventArgs());

Error: FormularioHospital.Form1' does not contain a definition for 'btnCalcular_Click' and no extension method 'btnCalcular_Click' accepting a first argument of type 'FormularioHospital.Form1' could be found. `

Answer 1

Option 1:

Go to designer and simply double click on your button. it will create that method for you.

Option 2:

Create this method, then using designer, assign that method to click event of your button.

private void btnCalcular_Click(object sender, EventArgs e)
{
    // codes that you want execute when your button clicked
}

Answer 2

First Option

1. You should create a button btnCalcular
2. Double Click on the Button

It will create the necessary procedure for you.

Second option

1. You can create a button btnCalcular

and Paste this code on your code behind

private void btnCalcular_Click(object sender, EventArgs e)
{

}