小编Kan*_*iet的帖子

此代码会立即将文本框更改为红色.我想要它,点击按钮然后红色,然后再绿色.

private void button1_Click(object sender, EventArgs e)
{

    textBox1.BackColor = System.Drawing.Color.Black;

    if (textBox1.BackColor.Equals(System.Drawing.Color.Black)) 
    {
        textBox1.BackColor = System.Drawing.Color.Red;
    }



    if (textBox1.BackColor.Equals(System.Drawing.Color.Red))
    {
        textBox1.BackColor = System.Drawing.Color.Green;
    }



    if (textBox1.BackColor.Equals(System.Drawing.Color.Green))
    {
        textBox1.BackColor = System.Drawing.Color.Blue;
    }



    if (textBox1.BackColor.Equals(System.Drawing.Color.Blue))
    {
        textBox1.BackColor = System.Drawing.Color.Red;
    }
}