c# - Issue with Masked Textbox

Question

I asked how to format a Textbox to accept only numbers but was adviced to use a Masked Textbox and set the Mask Property but doing this i have encountered some Problems

1) The masked textbox requires a maximum number of data a user can type to be set, but i want the user to be able to enter unlimited data

2) The masked textbox shows an Underscore

how do i remove this??

Any help will be appreciated sorry if this question is not well structured

Answer 1

默认情况下，MaskedTextbox 的PromptChar设置为“_”（下划线）。只需将其 PromptChar 属性更改为“”（空格）

Answer 2

您可以使用常规文本框并只处理 KeyPressed 事件。这也将防止复制和粘贴，这是取自这里的另一篇文章， 如何制作一个只接受数字的文本框？ .

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
    if (!char.IsControl(e.KeyChar) 
        && !char.IsDigit(e.KeyChar) 
        && e.KeyChar != '.')
    {
        e.Handled = true;
    }
}