将多个值绑定到一个标签 [英] Binding multiple values to one label

问题描述

在下面的示例中，我填写了两个标签白色SQL数据。



效果很好！我问自己，只是想知道是否也可以在单个标签中绑定info1和info2，例如，在label1中加载？

In the example below, I fill two labels white SQL data.

This works well! I asked myself, just wondering if it is also possible to binding info1 and info2 in a single label, for example, load in label1?

If (reader.Read())
{
Label1.text = convert.ToString(reader["info1"]);
Label2.text = convert.ToString(reader["info2"]);

}

推荐答案

你可以这样做

You can do that

Label1.text = Convert.ToString(reader["info1"])+"-"+Convert.ToString(reader["info2"]);

OR

OR

Label1.text = convert.ToString(reader["info1"]);
Label1.text += convert.ToString(reader["info2"]);

using System;
using System.Collections.Generic;
using System.ComponentModel;

namespace YourNamespace
{
    public class BindLabel : INotifyPropertyChanged
    {
        private string _labelText;

        // for testing only
        private Dictionary<string,> reader = new Dictionary<string,>
        {
            {"info1",99}, {"info2",34}
        }; 

        public string LabelText
        {
            get { return _labelText; }
            set
            {
                _labelText =
                    string.Format("{0} : {1}",
                        Convert.ToString(reader["info1"]),
                        Convert.ToString(reader["info2"]));

                OnPropertyChanged(new PropertyChangedEventArgs("LabelText"));
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        public void OnPropertyChanged(PropertyChangedEventArgs e)
        {
            PropertyChangedEventHandler handler = PropertyChanged;
            if (handler != null) handler(this, e);
        }
    }
}

用法：

BindLabel bindingSource = new BindLabel();
 label1.DataBindings.Add("Text",bindingSource,"LabelText");
 label1.Text = "IgnoreThis"; 

问题是：您是否真的想为通过绑定处理的简单字符串连接编写此类代码？

The question is: do you really want to write such code for a simple string concatenation to be handled through binding ?

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