单独删除带有 Button 的 TextBox Class

Question

我想使用单独的 class 'Delete' 从 TextBox 'txtName' 中删除值，方法是 .resetText()。我无法在这个单独的 class 中访问我的文本框。我该如何解决这个问题？

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    public void butDelete_Click(object sender, EventArgs e)
    {
        Delete delete = new Delete();
    }
}


class Delete
{
    public Delete()
    {
        txtName.ResetText();
    }
}

Answer 1

将文本框对象作为参数传递。

class Delete
{
    public Delete(TextBox txtName)
    {
        txtName.ResetText();
    }
}

Answer 2

发送带有删除方法参数的文本框控件：


public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    public void butDelete_Click(object sender, EventArgs e)
    {
        Delete delete = new Delete();
        delete.Delete(txtName);
    }
}


class Delete
{
    public Delete(Control control)
    {
         var txtBox = control as TextBox;
         if (txtBox == null)
            return;
         txtBox.ResetText();
    }
}

Answer 3

已解决

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    public void butDelete_Click(object sender, EventArgs e)
    {
        Delete delete = new Delete(txtName);
    }
}


class Delete
{
    public Delete(TextBox txtName)
    {
        txtName.ResetText();
    }
}

单独删除带有 Button 的 TextBox Class

Delete TextBox with Button in separate Class

c#

textbox

class

visual-studio

winforms