datagridview綁定源過濾器

Question

我想從BindingSource過濾數據 - 但它不工作。 我在做什麼錯？ 我已經將我的代碼簡化爲一個簡約的例子。

問題是，如果我在文本框中鍵入內容 - 沒有任何反應。

public partial class Form1 : Form 
{ 
    BindingSource bs = new BindingSource(); 

    public Form1() 
    { 
     InitializeComponent(); 
     List<myObj> myObjList= new List<myObj>(); 
     myObjList.Add(new myObj("LastNameA", "Peter")); 
     myObjList.Add(new myObj("LastNameA", "Klaus")); 
     myObjList.Add(new myObj("LastNameB", "Peter")); 

     foreach (myObj obj in myObjList) 
     { 
      bs.Add(obj); 
     } 
     dataGridView1.DataSource = bs; 
    } 

    private void textBox1_TextChanged(object sender, EventArgs e) 
    { 
     bs.Filter = string.Format("Name LIKE '%{0}%'", textBox1.Text); 
     dataGridView1.Refresh(); 
    } 

} 

public class myObj 
{ 
    public myObj(string LastName, String Name) 
    { 
     this.LastName = LastName; 
     this.Name = Name; 
    } 

    public string LastName { get; set; } 
    public string Name { get; set; } 
} 

Answer 1

這爲我工作至今

public partial class Form1 : Form 
{ 
    BindingSource bs = new BindingSource(); 
    BindingList<myObj> myObjList = new BindingList<myObj>(); 

    public Form1() 
    { 
     InitializeComponent(); 

     myObjList.Add(new myObj("LastNameA", "Peter")); 
     myObjList.Add(new myObj("LastNameA", "Klaus")); 
     myObjList.Add(new myObj("LastNameB", "Peter")); 

     bs.DataSource = myObjList; 

     dataGridView1.DataSource = myObjList; 
    } 

    private void textBox1_TextChanged(object sender, EventArgs e) 
    { 
     BindingList<myObj> filtered = new BindingList<myObj>(myObjList.Where(obj => obj.Name.Contains(textBox1.Text)).ToList()); 

     dataGridView1.DataSource = filtered; 
     dataGridView1.Update(); 
    } 

} 

public class myObj 
{ 
    public myObj(string LastName, String Name) 
    { 
     this.LastName = LastName; 
     this.Name = Name; 
    } 

    public string LastName { get; set; } 
    public string Name { get; set; } 
} 

}

Answer 2

的MSDN Documentation說：

實現了IBindingListView接口 支持過濾只有基礎列表。

替換此

List<myObj> myObjList= new List<myObj>(); 

與此

BindingList<myObj> myObjList= new BindingList<myObj>();