Question

我正在尝试将从ColorDialog返回的颜色值分配到另一个表单上。

表单1由2个按钮组成：“下订单”（创建带有一组控件的新表单）和“选择颜色”（允许您更改“下订单”表单的颜色）。因此，您无法同时打开“下订单”和“选择颜色”。

因此，我必须将Place Place表单的BackColor属性引用到具有两个按钮的表单，以便ColorDialog.Color可以分配到Place Order表单。

Form1代码：

private void SelectColor_Click(object sender, EventArgs e)
{
    if (colorDialog1.ShowDialog() == DialogResult.OK)
    {
        string color = Convert.ToString(colorDialog1.Color);
        MessageBox.Show(color);
        this.BackColor = colorDialog1.Color; // BackColor is only accessible for this form
    }
}

Answer 1

你这样做的方式，你需要保持一个变量来保持颜色。这样做：

//Declare this private variable to hold the color selected by the user
private System.Drawing.Color selectedcolor;    

private void SelectColor_Click(object sender, EventArgs e)
{
    if (colorDialog1.ShowDialog() == DialogResult.OK)
    {
        selectedcolor = colorDialog1.Color; // BackColor stored in variable
    }
}

然后在您启动新表单的代码（下订单按钮）中输入：

private void PlaceOrder_Click(object sender, EventArgs e)
{
    //I am assuming PlaceOrderForm is the name of the class of your other form
    PlaceOrderForm frm = new PlaceOrderForm();
    //Initialize other properties and events,etc.
    //Then make its background color as selected by user
    if(selectedcolor != null) frm.BackColor = selectedcolor;
}

Answer 2

if(colorDialog1.ShowDialog() != DialogResult.OK) {return;}

form2 f = new form2();
f.BackColor = colorDialog1.Color;
f.Show();

如何在C＃中将ColorDialog.Color指定给另一个表单？

2 个答案: