文本框文字问题 [英] a problem of text box text

问题描述

我以C#格式放置一个文本框.在该文本框中，我只想输入数字.如果我们按其他按钮，则不会在文本框中打印.

In c# form i put a text box. In that text box, i want only type numbers. If we press other buttons, it don''t print in the text box. Do anybody knows a method?

推荐答案

如何使用 NumericUpDown 控件代替?

或者，您也可以查看以下内容:简单数字文本框 [

How about using the NumericUpDown control instead?

Or you can check this out: Simple Numeric TextBox[^]

我建​​议您忘记更改行为TextBox并使用NumericUpDown
http://msdn.microsoft.com/en-us/library/system. windows.forms.numericupdown.aspx [ ^ ]

如果由于某些原因绝对需要TextBox，则可以处理 KeyPress [ ^ ]事件

I would suggest you forget about changing the behavoir of the TextBox and use NumericUpDown
http://msdn.microsoft.com/en-us/library/system.windows.forms.numericupdown.aspx[^]

If you absolutely need a TextBox for some reason, then you can handle the KeyPress[^] event

private void MyTextBox_KeyPress(object sender, KeyPressEventArgs e)
{
    e.Handled = !char.IsDigit(e.KeyChar); 
}

private void tbxHeightBackImage_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = !char.IsDigit(e.KeyChar) && !char.IsControl(e.KeyChar);

        }

这篇关于文本框文字问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！