windows form textbox numbers only
private void textBox1_TextChanged(object sender, EventArgs e)
{
if (System.Text.RegularExpressions.Regex.IsMatch(textBox1.Text, "[^0-9]"))
{
MessageBox.Show("Please enter only numbers.");
textBox1.Text = textBox1.Text.Remove(textBox1.Text.Length - 1);
}
}textbox should accept only numbers till 10 digit using angular
<input type="text" name="country_code" title="Error Message" pattern="[1-9]{1}[0-9]{9}">Copyright © 2021 Codeinu
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