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Winform同一数据源多个控件保持同步

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
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
Winform同一数据源多个控件保持同步

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
Winform同一数据源多个控件保持同步

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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未经允许不得转载:张拓的天空 » Winform同一数据源多个控件保持同步
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