文本框应仅获取数字且仅包含小数点后一位

问题描述

我在下面的编码中使用.但它也接受字母.如何防止这种情况，
[我给定keypreview = false并尝试使用keypreview = true]

i used below coding. but its accepting alphabets also., how to prevent this.,
[i given keypreview=false and tried with keypreview=true]

private void txtorate_KeyPress(object sender,KeyPressEventArgs e)
        {

            if(!char.IsControl(e.KeyChar)&&(!char.IsDigit(e.KeyChar))&& e.KeyChar!='.')
            {
                e.Handled = true;
            }

            if (e.KeyChar == '.' && (sender as TextBox).Text.IndexOf('.') > -1)
            {
                e.Handled = true;
            }
        }

推荐答案

private void txtorate_KeyPress(object sender,KeyPressEventArgs e)
{
    if(!char.Control(e.KeyChar) || (!char.IsDigit(e.KeyChar)) || e.KeyChar != '.')

        if (e.KeyChar == '.' && (sender as TextBox).Text.IndexOf('.') > -1)

                e.Handled = true;
}

我认为这会有所帮助.

I think it would help.

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