在了解Windows窗体数据绑定直接，对控件数据绑定一般都是直接对控件可接收值的属性赋值，如文本框的Text属性，但在做一些列表数据处理时，同一份数据要多处处理，对各个控件的属性逐一赋值显得比较麻烦。通过对控件属性设置数据源绑定，利用Windows数据更改通知这一特性，只要订阅(设定绑定)的控件都能接收到数据的变化通知。
通过DataBindings方法实现双向数据绑定
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textBox1.DataBindings.Add("Text", trackBar1, "Value", true, DataSourceUpdateMode.OnPropertyChanged); |
实现 INotifyPropertyChanged 接口，当属性值更改时引发事件通知
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private Serial serial;public Form3(){ InitializeComponent(); serial = new Serial(); this.textBox1.DataBindings.Add("Text", serial, "Number", true, DataSourceUpdateMode.OnPropertyChanged);}private void button1_Click(object sender, EventArgs e){ serial.Number += 1;}public class Serial : INotifyPropertyChanged{ private int number; public int Number { get { return number; } set { if (value != number) { number = value; NotifyPropertyChanged(); } } } public event PropertyChangedEventHandler PropertyChanged; private void NotifyPropertyChanged([CallerMemberName] String propertyName = "") { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } }} |
BindingList实现了双向Windows窗体数据绑定所需的主要接口。通过将BindingSource数据源绑定到控件，可以使多个控件保持数据同步
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public partial class Form1 : Form{ private IList<Foo> foos; private BindingList<Foo> bindingList; public Form1() { InitializeComponent(); dataGridView1.MultiSelect = false; // 数据源 foos = new List<Foo> { new Foo(){Id=Guid.NewGuid().ToString(), Field1="张三",Field2="选项一",Field3=DateTime.Now.AddYears(-6),Field4="1918731555X",Field5="云南省昆明市...街道66号"}, new Foo(){Id=Guid.NewGuid().ToString(), Field1="李四",Field2="选项二",Field3=DateTime.Now.AddYears(-7),Field4="1918731556X",Field5="云南省玉溪市...街道56号"}, new Foo(){Id=Guid.NewGuid().ToString(), Field1="王五",Field2="选项一",Field3=DateTime.Now.AddYears(-8),Field4="1918731557X",Field5="云南省红河州...街道46号"}, new Foo(){Id=Guid.NewGuid().ToString(), Field1="赵六",Field2="选项三",Field3=DateTime.Now.AddYears(-9),Field4="1918731558X",Field5="云南省楚雄州...街道36号"}, }; this.Load += Form1_Load; } private void Form1_Load(object sender, EventArgs e) { bindingList = new BindingList<Foo>(foos); var source = new BindingSource(bindingList, null); // 控件数据绑定 dataGridView1.DataSource = source; textBox1.DataBindings.Add("Text", source, "Field1", true, DataSourceUpdateMode.OnPropertyChanged); comboBox1.DataBindings.Add("Text", source, "Field2", true, DataSourceUpdateMode.OnPropertyChanged); dateTimePicker1.DataBindings.Add("Value", source, "Field3", true, DataSourceUpdateMode.OnPropertyChanged); textBox2.DataBindings.Add("Text", source, "Field4", true, DataSourceUpdateMode.OnPropertyChanged); textBox3.DataBindings.Add("Text", source, "Field5", true, DataSourceUpdateMode.OnPropertyChanged); bindingList.AddingNew += BindingList_AddingNew; } private void BindingList_AddingNew(object sender, AddingNewEventArgs e) { e.NewObject = new Foo() { Id = Guid.NewGuid().ToString() }; } // 保存 private void button1_Click(object sender, EventArgs e) { } // 新增 private void button2_Click(object sender, EventArgs e) { // 方式一 //bindingList.Add(new Foo() { Id = Guid.NewGuid().ToString() }); //int selectIndex = dataGridView1.Rows.Count - 1; //dataGridView1.Rows[selectIndex].Selected = true; //dataGridView1.CurrentCell = dataGridView1.Rows[selectIndex].Cells[0]; //方式二 var foo = bindingList.AddNew(); } // 删除 private void button3_Click(object sender, EventArgs e) { bindingList.RemoveAt(dataGridView1.CurrentRow.Index); dataGridView1.Rows[0].Selected = true; dataGridView1.CurrentCell = dataGridView1.Rows[0].Cells[0]; }}class Foo{ public string Id { get; set; } public string Field1 { get; set; } public string Field2 { get; set; } public DateTime Field3 { get; set; } public string Field4 { get; set; } public string Field5 { get; set; }} |
以上就是c# Winform同一数据源多个控件保持同步的详细内容，更多关于Winform同一数据源多个控件保持同步的资料请关注服务器之家其它相关文章！
原文链接：https://www.cnblogs.com/zhuanghamiao/p/winform-BindingList.html
