Clear Textbox, after clicking 2 times

Hi.

I would like to begin my form with a message inside Texbox1 and after double-clicking inside the text box, clean it

try this maybe

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Hi.

was perfect!!
would be possible to do so, one click only?

I think, no.

thx for rep points

another question.

imagine that when selecting the textbox with the mouse, and then she will be clean.

would be possible?

try this

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select text in textbox

Hi.

it was very good!
thank you very much!!