Replica Watches: Winform同一数据源多个控件保持同步

2021-06-11

Winform同一数据源多个控件保持同步

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

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

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; }}

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