BindingSource/DataGridView etkileşimi

Question

benim DataGridView (hiçbir satır, hiçbir autogenerated sütunlar) boş olmak tutar neden anlayamıyorum:

BindingList<MyObject> bList = new BindingList<MyObject>(); 
fileStream.Position = 0; 
MyObject.Deserialize(fileStream).ForEach(
    j => bList.Add(j)); 

this.bindingSource1.SuspendBinding(); 

this.dataGridView1.Columns.Clear(); 
this.dataGridView1.AutoGenerateColumns = true; 
this.dataGridView1.Enabled = false; 
this.dataGridView1.Invalidate(); 
this.bindingSource1.DataSource = bList; 
this.dataGridView1.DataSource = bindingSource1; 
this.bindingSource1.ResumeBinding(); 
this.dataGridView1.Enabled = true; 
this.dataGridView1.Refresh(); 

acikca ben eğer MyObject Ayrıca

public class MyObject 
{ 
    public DateTime CreationDate; 
    public string CreationId; 

    public static List<MyObject> Deserialize(Stream s) 
    { 
     XDocument xml = XDocument.Load(s); 

     var ps = from p in xml 
         .Descendants("p") 
         .Descendants("object") 
        select 
         new MyObject 
         { 
          CreationId = p.Attribute("creationid").Value 
         }; 

     return ps.ToList(); 
    } 

} 

olarak tanımlanır

sütunları aşağıdaki gibi ayarlayın, satırlar kılavuza eklenir ancak hepsi boştur

DataGridViewTextBoxColumn dc = new DataGridViewTextBoxColumn(); 
      dc.DataPropertyName = "CreationDate"; 
      dc.HeaderText = "CreationDate"; 
      dc.Name = "CreationDate"; 
      dc.Visible = true; 
      dc.AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill; 
      this.dataGridView1.Columns.Add(dc); 

      dc = new DataGridViewTextBoxColumn(); 
      dc.DataPropertyName = "CreationId"; 
      dc.HeaderText = "CreationId"; 
      dc.Name = "CreationId"; 
      dc.Visible = true; 
      dc.AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill; 
      this.dataGridView1.Columns.Add(dc); 

Answer 1

Bir Winformlarda Proje, & sonra sorunu daraltmak için mevcut koduna/debug map (eğer & it works ! gönderdiniz ne simülatörün tür) bu kodu deneyin: -

DataGridView dgv = new DataGridView(); 
    //Note: AutogenerateColumns is true by default 
    BindingSource bs = new BindingSource(); 
    BindingList<Customer> bList = new BindingList<Customer>(); 

    // Fill bList with Customers 
    bList.Add(new Customer(){Name="John"}); 

    bs.DataSource = bList; 
    dgv.DataSource = bs; 

    this.Controls.Add(dgv); 

MyObject eşdeğer : -

public class Customer 
    { 
     public string Name { get; set; } 
    } 

---

Yani, yukarıda bir eslestirin to Debug your code, sen kaldırabilir bu bitler - 1 denemede

this.bindingSource1.SuspendBinding(); 
this.dataGridView1.Columns.Clear(); 
this.dataGridView1.AutoGenerateColumns = true; 
this.dataGridView1.Enabled = false; 
this.dataGridView1.Invalidate(); 
this.bindingSource1.ResumeBinding(); 
this.dataGridView1.Enabled = true; 
this.dataGridView1.Refresh(); 

& just have this -

this.bindingSource1.DataSource = bList; 
this.dataGridView1.DataSource = bindingSource1;