Question

我制作了一个包含标签的自定义用户控件。我有3个字符串属性：firstName，lastName，fullName。

如何设置标签的text = FullName？

    public string firstName
    {
        get; set;
    }

    public string lastName
    {
        get; set;
    }

     public string fullName //this fails
    {

        get { return string.Format("{0} {1}", firstName, lastName); }
        set { labelFullName.Text = value; }
    }

Answer 1

看起来像Windows Form给我。在WPF中，您将使用labelFullName.Content属性。假设您希望每次更改名字或姓氏时将标签设置为全名，那么一个选项就是在UserControl类中执行此操作：

private String _sFirstName = "";
private String _sLastName = "";

public String FirstName { 
  get { return _sFirstName; }
  set { _sFirstName = value; UpdateLabel(); }
}
public String LastName { 
  get { return _sLastName; }
  set { _sLastName = value; UpdateLabel(); }
}
public String FullName {
  get { return _sFirstName + " " + _sLastName; }
}
private void UpdateLabel() {
  // do within a UI thread to prevent threading issues
  this.BeginInvoke((Action)(() => {
    labelFullName.Text = this.FullName.Trim();
  }));
}

加入usercontrol的两个字符串属性（firstName + lastName）并将其分配给label

1 个答案: