How to clear default text on textbox when I click directly on the textbox?

[aeris]

Hello, I'm a beginner of using C#.

I'm creating a window application,
May I know how to clear the default text on textbox when I click directly on the textbox?
For example, the txtBox has the words "[Insert your text here.]", so how to make the words all clear when user click on the textbox ?


Sorry for disturbing you all, can someone provide me the codes please?

Thanks,
by Aeris

[tlhintoq]

If you check the events for the text box (yellow lightning bold in the Properties pallet) you will see there is a 'Click' event. If you double-click in value space for that event, Visual Studio will stub out a handler for that event that looks something like this (give or take your TextBox's name)

        private void tbMyTextBox_Click(object sender, EventArgs e)
        {
 
        }
 

Now that you have a handler method for the Click event you can do what you like, such as clearing the text.
)

        private void tbMyTextBox_Click(object sender, EventArgs e)
        {
           tbMyTextBox.Text = string.empty;
        }
 

Let me point something out though... There is more than one way to enter a text box. You can click in it with a mouse... but you can also tab to it from another control. If you only handle the Click event, then your textbox won't clear if someone tabs into it. If you want to handle either case you might want to worry about the 'Enter' event instead of the 'Click' event.

[aeris]

Billion thanks so much!

My problem is solved. thanks so much, tlhintoq.

By Aeris.

[aeris]

But then, I realised that the textbox cannot be inserted text anymore. How to make it enable to insert text after the click event of clear text?

Thanks !!

[MrMancunian]

Use an If...Then-statement to check if the value of your textbox is the same als the value of your default text. Only if that results in True you want the textbox to clear.

private void tbMyTextBox_Click(object sender, EventArgs e) 
{ 
  If(tbMyTextBox.Text == "[Insert your text here.]")
  {
    tbMyTextBox.Text = string.empty;
  }
}

Steven

[aeris]

Thanks Steven so so much. It's work!
Billion thanks! :)

[Bogu]

Similarly, for Tab entry:
go to Form Properties ^ Events ^ AcceptsTabChanged;
select the same tbMyTextBox_Click