How do I avoid writing in a textbox in c #?

Question

How do I avoid writing in a textbox in c #?

Navigation

#1 by (5 votes)
#2 by (3 votes)
#3 by (0 votes)

0

What I want to do is that when I reach the limit of 10 characters that the user wrote on my little system I made an error and I did not write anymore, but what happens is that it only marks the error but every time I enter a new one number receives it and puts it in the textbox

This is the restriction code and it is in the textbox.

private void clave_TextChanged(object sender, EventArgs e)
        {
            if (clave.Text.Length>10) {
                MessageBox.Show("Error");
            }
        }

c#

asked by David 28.09.2016 в 21:07

source

3 answers

3

If it's an asp.Net TextBox, you can use the MaxLength property and tell it how many characters will be limited, something like this:

    <asp:TextBox runat="server" ID="text" MaxLength="10"></asp:TextBox>

answered by 28.09.2016 в 21:22

0

TextChanged is not the best event for your purpose, it is better that you use KeyDown and use Handle=true to control the click event.

But if your purpose is to limit the maximum number of characters in a TextBox you also have the property MaxLenght indicating the maximum number of characters it can contain.

Greetings,

answered by 28.09.2016 в 21:20

Add elements contained in a Python dictionary Div divided circular [closed]

score 5 · Accepted Answer

5

Assigning the maximum length property of your TextBox to 10, there is no need to manipulate the Keypress or TextChange events for that purpose.

textBox1.MaxLength = 10;

answered by 28.09.2016 / 21:55

source