数量较少时文本框颜色发生变化 [英] textbox color change when quantity is less

问题描述

任何机构都能帮助我更改文本框的背面颜色(用于显示
数量)在运行时小于5时.

在此先感谢

Can any body help me to change the back color of my text box(used to show
quantity) when the quantity became less than 5 on run time.

thanks in advance

推荐答案

试试这个:

Hi,
try this:

private void textBox2_TextChanged(object sender, EventArgs e)
{
  int quantity = 0;
  if (!Int32.TryParse(textBox2.Text, out quantity))
  {
    textBox2.BackColor = Color.Red;
    return;
  }

  if (quantity < 5)
    textBox2.BackColor = Color.Green;
  else
    textBox2.BackColor = Color.White;
}

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