如何在用户控件C＃WinForm中设置标签的文本

Question

I am going to design a userControl which contains a textbox and a label. How can I set a public property for label text?

this is my code:

public partial class CurrencyTextBoxWithLable : UserControl
{
    public CurrencyTextBoxWithLable()
    {
        InitializeComponent();   
    }

    private string _lblText;

    public string LabelText 
    {
        get
        {
            return _lblText;
        }
        set
        {
            _lblText = value;
        }
    }
}

But it doesn't work... Any help will be appreciated.

DesignerCode:

private void InitializeComponent()
    {
        this.label1 = new System.Windows.Forms.Label();
        this.textBox1 = new System.Windows.Forms.TextBox();
        this.SuspendLayout();
        // 
        // label1
        // 
        this.label1.AutoSize = true;
        this.label1.Location = new System.Drawing.Point(6, 6);
        this.label1.Name = "label1";
        this.label1.Size = new System.Drawing.Size(35, 13);
        this.label1.TabIndex = 0;
        this.label1.Text = this.LabelText;//Oooppsss!

}

Answer 1

It's not working because you are overwriting your value from properties. In designer file you are calling this:

this.label1.Text = this.LabelText;

Looking at your getter, it's returning _lblText value:

get
{
    return _lblText;
}

Since it's not initialized the value of _lblText is empty string (""). Try setting value of _lblText to some initial value and run your code again. For example add this:

private string _lblText = "Label1";

EDIT:

When you add label to your form it looks like this:

this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(12, 9);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(46, 17);
this.label1.TabIndex = 0;
this.label1.Text = "label1";

So, "label1" is the same value as in properties. When you change it in properties, to lets say Test label string , designer will have value of:

this.label1.Test = "Test label string";

Try removing and adding your label again if it's not working for you. You should be able to change it's value through properties again.