Function that replaces character and allow only numbers into the textbox
This technique we can use on the onkeyup property of HTML element
<input type="text" id="txtMobileNo"
onkeyup="if (/D/g.test(this.value)) this.value = this.value.replace(/D/g,'')"windows form textbox only allow numbers
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
e.Handled = !char.IsDigit(e.KeyChar) && !char.IsControl(e.KeyChar);
}Copyright © 2021 Codeinu
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