作法：將 DataView 物件繫結至 Windows Forms DataGridView 控制項

DataGridView 控制項以表格式顯示資料，是一項功能強大、有彈性的方式。 DataGridView 控制項支援標準的 Windows Form 資料繫結模型，因此它將繫結至 DataView 和各種其他資料來源。 不過，在大部分情況下，您會繫結至 BindingSource 元件，以便管理與資料來源互動的詳細資料。

如需 DataGridView 控制項的詳細資訊，請參閱 DataGridView 控制項概觀。

若要將 DataGridView 控制項連接至 DataView

1. 實作一種方法來處理從資料庫中擷取資料的詳細資料。 下列程式碼範例會實作 GetData 方法，而此方法會初始化 SqlDataAdapter 元件並用它來填入 DataSet。 請務必將 connectionString 變數設定為適用於您資料庫的值。 您將需要已安裝 AdventureWorks SQL Server 範例資料庫之伺服器的存取權。

   void GetData()
   {
       try
       {
           // Initialize the DataSet.
           _dataSet = new DataSet
           {
               Locale = CultureInfo.InvariantCulture
           };
   
           // Create the connection string for the AdventureWorks sample database.
           const string connectionString = "...";
   
           // Create the command strings for querying the Contact table.
           const string contactSelectCommand = "SELECT ContactID, Title, FirstName, LastName, EmailAddress, Phone FROM Person.Contact";
   
           // Create the contacts data adapter.
           _contactsDataAdapter = new SqlDataAdapter(
               contactSelectCommand,
               connectionString);
   
           // Create a command builder to generate SQL update, insert, and
           // delete commands based on the contacts select command. These are used to
           // update the database.
           var contactsCommandBuilder = new SqlCommandBuilder(_contactsDataAdapter);
   
           // Fill the data set with the contact information.
           _contactsDataAdapter.Fill(_dataSet, "Contact");
       }
       catch (SqlException ex)
       {
           MessageBox.Show(ex.Message);
       }
   }
   

   Private Sub GetData()
       Try
           ' Initialize the DataSet.
           dataSet = New DataSet()
           dataSet.Locale = CultureInfo.InvariantCulture
   
           ' Create the connection string for the AdventureWorks sample database.
           Dim connectionString As String = "..."
   
           ' Create the command strings for querying the Contact table.
           Dim contactSelectCommand As String = "SELECT ContactID, Title, FirstName, LastName, EmailAddress, Phone FROM Person.Contact"
   
           ' Create the contacts data adapter.
           contactsDataAdapter = New SqlDataAdapter( _
               contactSelectCommand, _
               connectionString)
   
           ' Create a command builder to generate SQL update, insert, and
           ' delete commands based on the contacts select command. These are used to
           ' update the database.
           Dim contactsCommandBuilder As SqlCommandBuilder = New SqlCommandBuilder(contactsDataAdapter)
   
           ' Fill the data set with the contact information.
           contactsDataAdapter.Fill(dataSet, "Contact")
   
       Catch ex As SqlException
           MessageBox.Show(ex.Message)
       End Try
   End Sub
   

2. 在表單的 Load 事件處理常式中，將 DataGridView 控制項繫結至 BindingSource 元件並呼叫 GetData 方法，以便從資料庫中擷取資料。 DataView 是根據針對 Contact DataTable 的 LINQ to DataSet 查詢所建立，然後它會繫結至 BindingSource 元件。

   void Form1_Load(object sender, EventArgs e)
   {
       // Connect to the database and fill the DataSet.
       GetData();
   
       contactDataGridView.DataSource = contactBindingSource;
   
       // Create a LinqDataView from a LINQ to DataSet query and bind it
       // to the Windows forms control.
       EnumerableRowCollection<DataRow> contactQuery = from row in _dataSet.Tables["Contact"].AsEnumerable()
                                                       where row.Field<string>("EmailAddress") != null
                                                       orderby row.Field<string>("LastName")
                                                       select row;
   
       _contactView = contactQuery.AsDataView();
   
       // Bind the DataGridView to the BindingSource.
       contactBindingSource.DataSource = _contactView;
       contactDataGridView.AutoResizeColumns();
   }
   

   Private Sub Form1_Load(ByVal sender As System.Object, _
                          ByVal e As System.EventArgs) _
                          Handles MyBase.Load
       ' Connect to the database and fill the DataSet.
       GetData()
   
       contactDataGridView.DataSource = contactBindingSource
   
       ' Create a LinqDataView from a LINQ to DataSet query and bind it
       ' to the Windows Forms control.
       Dim contactQuery = _
           From row In dataSet.Tables("Contact").AsEnumerable() _
           Where row.Field(Of String)("EmailAddress") <> Nothing _
           Order By row.Field(Of String)("LastName") _
           Select row
   
       contactView = contactQuery.AsDataView()
   
       ' Bind the DataGridView to the BindingSource.
       contactBindingSource.DataSource = contactView
       contactDataGridView.AutoResizeColumns()
   End Sub
   

另請參閱

• 資料繫結和 LINQ to DataSet