If numerical value will zero in textbox

Hi Kishan,

 

Please check below code - it is working fine as per need.

 

You may use the below code

private void txtNumber_TextChanged(object sender, EventArgs e)
{
    if (txtNumber.Text.Length == "0")
    {
        MessageBox.Show("You cannot input 0");
    }
}

 

Thanks,

Priyan

 

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