private void usernamTextBox_Leave(object sender, EventArgs e)
{
usernamTextBox.Enabled = false;
if (String.Equals(usernamTextBox.Text, usrname) == false)
{
datachange = true;
if (ValidationCheck.CheckUserName(usernamTextBox.Text))
{
usernameExist.Visible = true;
button1.Enabled = false;
}
else
{
usernameExist.Visible = false;
button1.Enabled = true;
}
}
}
