CODEWITHSUNDEEP
c#winforms
DoganalpK
DoganalpK

Reputation: 13

How can I get button's background color and send it to other form?

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

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;
}

Upvotes: 0

Views: 801

Answers (1)

Jimi
Jimi

Reputation: 32248

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

When, in Form1, you create an instance of 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);

In Form2, set the Owner BackColor property:

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

Using a custom property:

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

In Form2, using a property value:

public Form Form1Reference { get; set; }

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

Setting a reference of Form1 in Form2 constructor:

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

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;
}

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;
}

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;
}

Change the previous code using this value if needed.

Upvotes: 2

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