在VB.NET中检查屏蔽文本框上的小数

Question

I've got a masked textbox with the mask to be _____.__ .

Now someone can just put in 00001.__ . And it still works, but I need people to enter a decimal number. Also, how can I put a check on this?

Answer 1

In an event like TextChanged you can use:

if (maskedTextBox1.MaskCompleted == true)
{
    // Invalid input
}

Answer 2

I believe it should be better just to convert the textbox to a decimal or double, since the lack of decimal numbers just means ".00".

So, you may:

1. Set the mask of control to "000000.00" or even use as it is now.
2. Convert it to double or decimal: Dim DecNum as Double = CDbl(maskedTextBox.text) Dim DecNum as Decimal = CDec(maskedTextBox.text)

So, if the user had informed a decimal number, you would have it; otherwise your number will consider ".__" as ".00".