C# button's name reference of an action

dann11 · Nov 21, 2016

I am trying to control a a counter with button using c# development. I have set different buttons for different counter and has an access authorization first before the counter starts counting. I have already made the authorization and it works but I have problems with buttons. I used the button name's to identify which button is clicked and which counter must operate.

Code:

public void modeOfCounter()
{
//Conditon if button1(main start button) is clicked
if (ss.Name == "button1")
{
counterA.start();
counterB.start();
counterC.start();
counterD.start();
targetSetting.Enabled = false;


button1.Enabled = false;
//disable the rest of the startbutton
aStartBtn.Enabled = false;
bStartBtn.Enabled = false;
cStartBtn.Enabled = false;
//saveButton.Enabled = false;
resetButton.Enabled = false;
}

if (ss.Name == "bc288StartBtn")
{
counterA.start();
targetSetting.Enabled = false;

aStartBtn.Enabled = false;
bStartBtn.Enabled = false;
cStartBtn.Enabled = false;
//saveButton.Enabled = false;
resetButton.Enabled = false;
button1.Enabled = false;	

}
}

I have declared ss as an object. and it keep on giving me error "Object reference not set to an instance of an object."

I believe it has something to do with the object declaration of the ss, how do you think should I declare the button if I will be using its name as a reference of an action?

horace1 · Nov 21, 2016

if you have a number of Buttons which call an event handler when they are clicked you can identify which Button caused the event

Code:

        private void ButtonClick(object sender, EventArgs e)
        {
            Button clickedButton = (Button)sender;
            textBox1.Text= clickedButton.Name;

displays the Button Name in the TextBox

dann11 · Nov 21, 2016

horace1 said:
if you have a number of Buttons which call an event handler when they are clicked you can identify which Button caused the event

Code:

private void ButtonClick(object sender, EventArgs e) { Button clickedButton = (Button)sender; textBox1.Text= clickedButton.Name;

displays the Button Name in the TextBox

yes that is absolutely right, all buttons will call a single event. Does the code means every button will have to be coded as such? or do I have to use an if statement?

horace1 · Nov 21, 2016

you can use an if comparing with the button name

Code:

 if (clickedButton.Name == "button1") textBox1.Text = "Button 1 selected";
    else
       if (clickedButton.Name == "button2") textBox1.Text = "Button 2 selected";

or the button text displayed on the form

Code:

 if (clickedButton.Text == "Button 1") textBox1.Text = "Button 1 selected";
     else
         if (clickedButton.Text == "Button 2") textBox1.Text = "Button 2 selected";

I tend to give the button meaningful names ("switchOnMotor" rather than "button1") then check the name in an if() or a switch, e.g.

Code:

switch (clickedButton.Name)
       {
        case "button1": textBox1.Text = "Button 1 selected"; break;
        case "button2": textBox1.Text = "Button 2 selected"; break;
         }

dann11 · Nov 25, 2016

I have written the code as below, but it has an error of "No overload for method 'buttonClicked' takes 0 arguments", please also help me with this. How should it be, if there is really no value to be written at the function?

Code:

public void buttonClicked(object sender, EventArgs e)
{
    Button buttonclicked = (Button) sender:

    if(buttonclicked.Name == "Button1")
      {
        counterA.start();
        counterB.start();
        counterC.start();
        counterD.start();
        targetSetting.Enabled = false;
        button1.Enabled = false;
        aStartBtn.Enabled = false;
        bStartBtn.Enabled = false;
        cStartBtn.Enabled = false;
        saveButton.Enabled = false;
        resetButton.Enabled = false;
       }

        if(buttonclicked.Name == "bc288StartBtn")
        {
        counterA.start();
        targetSetting.Enabled = false;
        aStartBtn.Enabled = false; 
        bStartBtn.Enabled = false;
        cStartBtn.Enabled = false;
       //saveButton.Enabled = false;
       resetButton.Enabled = false;
       button1.Enabled = false;
         }
}

horace1 · Nov 25, 2016

you have to set up the code so that the event handler is called when the button is pressed
the simplest way is to use the Visual Studio designer
https://msdn.microsoft.com/en-us/library/aa984320(v=vs.71).aspx
https://msdn.microsoft.com/en-us/library/zwwsdtbk(v=vs.80).aspx

C# button's name reference of an action

dann11

Full Member level 3

horace1

Advanced Member level 5

dann11

dann11

Full Member level 3

horace1

Advanced Member level 5

dann11

dann11

Full Member level 3

horace1

Advanced Member level 5

dann11

Similar threads

C# button's name reference of an action

Full Member level 3

Advanced Member level 5

Full Member level 3

Advanced Member level 5

Full Member level 3

Advanced Member level 5

Similar threads

Privacy & Transparency

Privacy & Transparency