我如何将值从用户控件传递到另一个用户控件

Question

I need to pass a string that from my first UserControl to the second UserControl. How do i do?

Answer 1

You can define custom property to achieve it.

First, define property UC2 in Form1.cs to access the SecondUC instance .

public SecondUC UC2
{
    get { return secondUC1; }
    set { secondUC1 = value; }
}

Then, define property TB2 in SecondUC.cs to access the TextBox instance that in SecondUC .

public TextBox TB2
{
    get { return textBox2; }
    set { textBox2 = value; }
}

Last, set the TextBox2 vaule by clicking button in FirstUC .

private void button1_Click(object sender, EventArgs e)
{
    Form1 form1 = (Form1)this.FindForm();
    form1.UC2.TB2.Text = "test string";
}

Test result,