What are the simplest ways that TextBox can only enter numbers in asp.net?
This article introduces the relevant knowledge of "what is the most concise way for TextBox to input numbers in asp.net". In the operation of actual cases, many people will encounter such a dilemma. Next, let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!
The following TextBox
The copy code is as follows:
1. Add a script to the page:
The copy code is as follows:
Functionisnum ()
{
If (event.keyCode57)
{
Event.keyCode=0
}
}
two。 Add to the code:
The copy code is as follows:
Try
{
Convert.ToDouble (TextBox1.Text.Trim ())
}
Catch
{
Response.Write ("")
TextBox1.Text= ""
Page.RegisterStartupScript ("focus", "")
}
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