如何在文本框起始值中添加*并在C＃中打印到标签中

Question

I have some text boxes in my form where the user need to enter the different prices of article, what I want to do is to automatically add Starting value * whenever text is changed . So when the user types 1 it is displayed like *****1 and text box Length are 6 size fix. then again user type 111 it is display like ***111

Answer 1

Not sure if you are on web, forms or what, but here is what you looking for:

txt1.Text = txt1.Text.PadLeft(6, '*');

Reference: PadLeft

Answer 2

You can use the PadLeft method for a string:

textBox1.Text = textBox1.Text.PadLeft(6, '*');

See an example here: https://dotnetfiddle.net/GPfFsx