key handling 1

[ernatlas]

C# Hello, i have a question. For example, i have a txtBox focused, and im writting text on it, but when i see the key '-' pressed, i want to not show that character in my textbox, and at the same time delete de last character from it. Is there any way to do?

 

[TipGiver]

private void textBox1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
char f = char.Parse("-");
string t = this.textBox1.Text;

if(e.KeyChar == f)
{
// Do not print the char
e.Handled = true;
// Remove the last char
this.textBox1.Text = t.Substring(0, t.Length - 1);
// Set the I-beam at the end of the text box
this.textBox1.Select(this.textBox1.Text.Length, 1);
}
}

 

[chiph]

FYI:

char f = char.Parse("-");

Can also be represented as:

char f = '-';

which is a little shorter to code & view, but ultimately I don't think it makes any difference, as the IL should be the same for both styles.

Chip H.


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