如何获取按钮的背景色并将其发送为其他形式? [英] How can I get button's background color and send it to other form?

问题描述

我有一个包含2个表单的项目，第一个表单为空.第二种形式有5个按钮.

I have a project with 2 forms, the first form is empty. The second form has 5 buttons.

当我按下一个按钮时，它会打开一个颜色对话框.我正在选择一种颜色，并且按钮的背景色正在改变.例如，如果 button1 的背景色ID为 Green ，则 form1 的背景色应为绿色.不是即时的，而是当我按下保存按钮时.我需要将按钮的背景色转换为变量.我该怎么办?

When I press a button, it opens a color dialog. I'm choosing a color, and button's background color is changing. For example, if button1's background color id is Green, form1's background color should be green. Not instant but when I press the Save button. I need to get button's background color into a variable. How can I do this?

private void btnKAMU_Click(object sender, EventArgs e)
{
    colorDialog1.ShowDialog();
    btnKAMU.BackColor = colorDialog1.Color;
}

推荐答案

您可以将 Form1 的引用传递给 Form2 设置 Form2 所有者 ，自定义属性或使用 Form2 构造函数.

You can pass a reference of Form1 to Form2 setting Form2 Owner, with a custom Property or using Form2 constructor.

在 Form1 中创建 Form2 的实例时:

When, in Form1, you create an instance of Form2:

然后使用所有者属性:
(以这种方式实例化表单时，设置了 Form2 Owner :
form2.Show(this); .此参考是 Form2

Using then Owner property:
(Form2 Owner is set when you instantiate a Form this way:
form2.Show(this);. The this reference is Form2 Owner - Form1 here).

Form2 form2 = new Form2();
form2.Show(this);
//form2.ShowDialog(this);

在 Form2 中，设置 Owner BackColor 属性:

In Form2, set the Owner BackColor property:

private void btnSAVE_Click(object sender, EventArgs e)
{
    this.Owner.BackColor = btnKAMU.BackColor;
}

---

使用自定义属性:

Form2 form2 = new Form2();
form2.Form1Reference = this;
form2.Show();
//form2.ShowDialog();

在 Form2 中，使用属性值:

In Form2, using a property value:

public Form Form1Reference { get; set; }

private void btnSAVE_Click(object sender, EventArgs e)
{
    this.Form1Reference.BackColor = btnKAMU.BackColor;
}

---

在 Form2 构造函数中设置 Form1 的引用:

---

Setting a reference of Form1 in Form2 constructor:

Form2 form2 = new Form2(this);
form2.Show();
//form2.ShowDialog();

具有与以前相同的属性值:

With a property value as before:

private Form Form1Reference { get; set; }

public Form2(Form Form1Instance)
{
    this.Form1Reference = Form1Instance;
    InitializeComponent();
}

private void btnSAVE_Click(object sender, EventArgs e)
{
    this.Form1Reference.BackColor = btnKAMU.BackColor;
}

或将 Form1 引用分配给私有字段:

Or assign the Form1 reference to a private Field:

private Form Form1Reference;

public Form2(Form Form1Instance)
{
    this.Form1Reference = Form1Instance;
    InitializeComponent();
}

private void btnSAVE_Click(object sender, EventArgs e)
{
    this.Form1Reference.BackColor = btnKAMU.BackColor;
}

根据您的上下文，可能有必要将选定的颜色关联到私有字段，并使用其值更改 Form1.BackColor

Depending on your context, it could be necessary to assing the chosen Color to a private Field and use its value to change Form1.BackColor

private Color Form1BackColor;

private void btnKAMU_Click(object sender, EventArgs e)
{
    colorDialog1.ShowDialog();
    btnKAMU.BackColor = colorDialog1.Color;
    this.Form1BackColor = btnKAMU.BackColor;
}

根据需要使用此值更改以前的代码.

Change the previous code using this value if needed.

这篇关于如何获取按钮的背景色并将其发送为其他形式?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！