WinForm绑定单选按钮

Question

我使用VS2010,然后将Member datagridview拖放到设计视图中.之后,我将名称成员文本字段拖放到设计视图,然后尝试编辑和保存.它运作正常.

然后我拖放性别单选按钮来设计视图.但绑定它不起作用.

我怎么能在这种情况下绑定？

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Test7
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void memberBindingNavigatorSaveItem_Click(object sender, EventArgs e)
        {
            this.Validate();
            this.memberBindingSource.EndEdit();
            this.tableAdapterManager.UpdateAll(this.dbDataSet);

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'dbDataSet.Member' table. You can move, or remove it, as needed.
            this.memberTableAdapter.Fill(this.dbDataSet.Member);
            // TODO: This line of code loads data into the 'dbDataSet.Member' table. You can move, or remove it, as needed.
            this.memberTableAdapter.Fill(this.dbDataSet.Member);

        }


        private void memberBindingNavigatorSaveItem_Click_1(object sender, EventArgs e)
        {
            this.Validate();
            this.memberBindingSource.EndEdit();
            this.tableAdapterManager.UpdateAll(this.dbDataSet);

        }
    }
}

Answer 1

这有两种可能的解决方案.

绑定格式和解析事件

该Binding班有上即时绑定数据的转换的形式内置在设备格式和解析事件.

以下是如何使用"男性"单选按钮进行这些事件.在代码中创建绑定,而不是在设计器中:

// create binding between "Sex" property and RadioButton.Checked property
var maleBinding = new Binding("Checked", bindingSource1, "Sex");
// when Formatting (reading from datasource), return true for M, else false
maleBinding.Format += (s, args) => args.Value = ((string)args.Value) == "M";
// when Parsing (writing to datasource), return "M" for true, else "F"
maleBinding.Parse += (s, args) => args.Value = (bool)args.Value ? "M" : "F";
// add the binding
maleRb.DataBindings.Add(maleBinding);

// you don't need to bind the Female radiobutton, just make it do the opposite
// of Male by handling the CheckedChanged event on Male:
maleRb.CheckedChanged += (s, args) => femaleRb.Checked = !maleRb.Checked;

计算财产

另一种方法是向您的数据源添加计算属性:

public bool IsMale
{ 
    get { return Sex == "M"; }
    set 
    {  
        if (value)
            Sex = "M";
        else
            Sex = "F";
    }
}

现在,您只需将Male radiobutton绑定到数据源上的此属性(只是不要在网格中显示此属性).

你可以再次将女性与男性联系起来:

maleRb.CheckedChanged += (s, args) => femaleRb.Checked = !maleRb.Checked;