c#认证考试第四章

1.  通过滑块改变另一控件的值

private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
this.trackBar1.Value = (int)this.numericUpDown1.Value;
}

private void trackBar1_Scroll(object sender, EventArgs e)
{
this.numericUpDown1.Value = this.trackBar1.Value;

}

2.  通过控件hScrollBar形成控制条去控制窗体颜色。

private void hScrollBar1_Scroll(object sender, ScrollEventArgs e)

{
this.BackColor = Color.FromArgb(hScrollBar1.Value,hScrollBar2.Value,hScrollBar3.Value);

}

private void hScrollBar2_Scroll(object sender, ScrollEventArgs e)
{

this.BackColor = Color.FromArgb(hScrollBar1.Value, hScrollBar2.Value, hScrollBar3.Value);

}

private void hScrollBar3_Scroll(object sender, ScrollEventArgs e)
{

this.BackColor = Color.FromArgb(hScrollBar1.Value, hScrollBar2.Value, hScrollBar3.Value);

}

}

}

3.与第二题类似，只是第二题是横条，这个是竖条，控件用vScrollBar.

4.  通过滑条改变前景色

private void hScrollBar1_Scroll(object sender, ScrollEventArgs e)
{
this.ForeColor = Color.FromArgb(hScrollBar1.Value, hScrollBar2.Value, hScrollBar3.Value);
}

private void hScrollBar2_Scroll(object sender, ScrollEventArgs e)
{
this.ForeColor = Color.FromArgb(hScrollBar1.Value, hScrollBar2.Value, hScrollBar3.Value);
}

private void hScrollBar3_Scroll(object sender, ScrollEventArgs e)
{
this.ForeColor = Color.FromArgb(hScrollBar1.Value, hScrollBar2.Value, hScrollBar3.Value);
}

5.与第四题类似。

6.通过滑块改变透明度，并且在进度条中显示透明进度。

运行结果：

c#认证考试第四章

原文：http://www.cnblogs.com/tqlt/p/7587715.html