c＃linqtosql datagridview完全爲空

Question

我有一個datagridview，我想用LINQ查詢加載它的數據。當我調試我可以看到數據源有正確的數據和查詢，但他們不出現在dgv中，它完全是空的，沒有行沒有列。我查了很多已經問過的問題，但無法解決。它的Windows窗體應用程序順便說一句。我也有另一個linq查詢插入一些數據，它工作正常，所以我假設問題不是關於linqtosql類。

namespace StokUygulamasi 

[Database(Name = "HarleyDavidson")] 

class HarleyDavidson : DataContext 
{ 
    public HarleyDavidson() : base("Data Source=SELCUK-CODE\\LOCALHOST;Initial Catalog = HarleyDavidson; Integrated Security = true") 
    { 

    } 
    public HarleyDavidson(SqlConnection con) : base(con) { } 

    public Table<Motor> Motor 
    { 
     get 
     { 
      return this.GetTable<Motor>(); 
     } 
    } 

    public Table<IkinciEl> IkinciEl 
    { 
     get 
     { 
      return this.GetTable<IkinciEl>(); 
     } 
    } 

    public Table<Musteri> Musteri 
    { 
     get 
     { 
      return this.GetTable<Musteri>(); 
     } 
    } 

    public Table<Satis> Satis 
    { 
     get 
     { 
      return this.GetTable<Satis>(); 
     } 
    } 
} 

[Table(Name = "Motor")] 
public class Motor 
{ 
    [Column(Storage = "MotorID", DbType ="Int Not null", IsPrimaryKey = true, IsDbGenerated = true)] 
    public int MotorID; 
    [Column(Storage = "Marka", DbType = "nvarchar(20) Not null")] 
    public string Marka; 
    [Column(Storage = "Model", DbType = "nvarchar(20) Not null")] 
    public string Model; 
    [Column(Storage = "Seri", DbType = "nvarchar(20) Not null")] 
    public string Seri; 
    [Column(Storage = "Plaka", DbType = "nvarchar(20) Not null")] 
    public string Plaka; 
    [Column(Storage = "Sasi", DbType = "char(17) Not null")] 
    public string Sasi; 
    [Column(Storage = "KM", DbType = "int Not null")] 
    public int KM; 
    [Column(Storage = "Yil", DbType = "int Not null")] 
    public int Yil; 
    [Column(Storage = "AlisFiyat", DbType = "decimal(18,2) Not null")] 
    public decimal AlisFiyat; 
    [Column(Storage = "SatisFiyat", DbType = "decimal(18,2) Not null")] 
    public decimal SatisFiyat; 
} 
[Table(Name = "Musteri")] 
public class Musteri 
{ 
    [Column(Storage = "MusteriID", DbType = "Int Not null", IsPrimaryKey = true, IsDbGenerated = true)] 
    public int MusteriID; 
    [Column(Name = "Ad", DbType = "nvarchar(100) Not null")] 
    public string Ad; 
} 

[Table(Name = "Satis")] 
public class Satis 
{ 
    [Column(Name = "SatisID", DbType = "Int Not null", IsPrimaryKey = true, IsDbGenerated = true)] 
    public int SatisID; 
    [Column(Name = "Tarih", DbType = "Date Not null")] 
    public DateTime Tarih; 
    [Column(Name = "Musteri", DbType = "nvarchar(100) Not null")] 
    public string Musteri; 
    [Column(Name = "Arac", DbType = "nvarchar(10) Not null")] 
    public string Arac; 
    [Column(Name = "AracSasi", DbType = "char(17) Not null")] 
    public string AracSasi; 
    [Column(Name = "Tutar", DbType = "decimal(18,2) Not null")] 
    public decimal Tutar; 



} 

[Table(Name = "IkinciEl")] 
public class IkinciEl 
{ 
    [Column(Name = "IkinciElID", DbType = "int Not null", IsPrimaryKey = true, IsDbGenerated = true)] 
    public int IkinciElID; 
    [Column(Name = "Marka", DbType = "nvarchar(20) Not null")] 
    public string Marka; 
    [Column(Name = "Model", DbType = "nvarchar(20) Not null")] 
    public string Model; 
    [Column(Name = "Seri", DbType = "nvarchar(20) Not null")] 
    public string Seri; 
    [Column(Name = "Plaka", DbType = "nvarchar(10) Not null")] 
    public string Plaka; 
    [Column(Name = "Sasi", DbType = "char(17) Not null")] 
    public string Sasi; 
    [Column(Name = "KM", DbType = "int Not null")] 
    public int KM; 
    [Column(Name = "Yil", DbType = "int Not null")] 
    public int Yil; 
    [Column(Name = "Fiyat", DbType = "decimal(18,2) Not null")] 
    public decimal Fiyat; 
} 

private void Form1_Load(object sender, EventArgs e) 
    { 

     hdc = new HarleyDavidson(con); 
     var sonuc = from a in hdc.IkinciEl select a; 

     dgvIkinciEl.DataSource = sonuc.ToList(); 

     //var bindingSource = new BindingSource(); 
     //bindingSource.DataSource = sonuc.ToList(); 
     //dgvIkinciEl.DataSource = bindingSource; 
    } 

this.dgvIkinciEl.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize; 
     this.dgvIkinciEl.Location = new System.Drawing.Point(3, 3); 
     this.dgvIkinciEl.Name = "dgvIkinciEl"; 
     this.dgvIkinciEl.Size = new System.Drawing.Size(648, 247); 
     this.dgvIkinciEl.TabIndex = 0; 

Answer 1

設置自動生成的列屬性爲true，可以解決你的問題設置數據源綁定之前

dgvIkinciEl.AutoGenerateColumns = true;