BindingCompleteEventArgs.BindingCompleteContext Properti
Definisi
Penting
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Mendapatkan arah operasi pengikatan.
public:
property System::Windows::Forms::BindingCompleteContext BindingCompleteContext { System::Windows::Forms::BindingCompleteContext get(); };
public System.Windows.Forms.BindingCompleteContext BindingCompleteContext { get; }
member this.BindingCompleteContext : System.Windows.Forms.BindingCompleteContext
Public ReadOnly Property BindingCompleteContext As BindingCompleteContext
Nilai Properti
Salah BindingCompleteContext satu nilai.
Contoh
Contoh kode berikut menunjukkan cara menangani BindingComplete peristiwa dan menggunakan BindingCompleteEventArgs untuk memastikan beberapa kontrol yang terikat ke sumber data yang sama tetap disinkronkan ketika salah satu nilai kontrol diubah. Untuk menjalankan contoh ini, tempelkan kode ke dalam Formulir Windows dan panggil InitializeControlsAndData
metode dari konstruktor formulir atau Load metode penanganan peristiwa.
private void InitializeControlsAndData()
{
// Initialize the controls and set location, size and
// other basic properties.
this.dataGridView1 = new DataGridView();
this.textBox1 = new TextBox();
this.textBox2 = new TextBox();
this.dataGridView1.ColumnHeadersHeightSizeMode =
DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dataGridView1.Dock = DockStyle.Top;
this.dataGridView1.Location = new Point(0, 0);
this.dataGridView1.Size = new Size(292, 150);
this.textBox1.Location = new Point(132, 156);
this.textBox1.Size = new Size(100, 20);
this.textBox2.Location = new Point(12, 156);
this.textBox2.Size = new Size(100, 20);
this.ClientSize = new Size(292, 266);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.dataGridView1);
// Declare the DataSet and add a table and column.
DataSet set1 = new DataSet();
set1.Tables.Add("Menu");
set1.Tables[0].Columns.Add("Beverages");
// Add some rows to the table.
set1.Tables[0].Rows.Add("coffee");
set1.Tables[0].Rows.Add("tea");
set1.Tables[0].Rows.Add("hot chocolate");
set1.Tables[0].Rows.Add("milk");
set1.Tables[0].Rows.Add("orange juice");
// Add the control data bindings.
dataGridView1.DataSource = set1;
dataGridView1.DataMember = "Menu";
textBox1.DataBindings.Add("Text", set1,
"Menu.Beverages", true, DataSourceUpdateMode.OnPropertyChanged);
textBox2.DataBindings.Add("Text", set1,
"Menu.Beverages", true, DataSourceUpdateMode.OnPropertyChanged);
BindingManagerBase bmb = this.BindingContext[set1, "Menu"];
bmb.BindingComplete += new BindingCompleteEventHandler(bmb_BindingComplete);
}
private void bmb_BindingComplete(object sender, BindingCompleteEventArgs e)
{
// Check if the data source has been updated, and that no error has occurred.
if (e.BindingCompleteContext ==
BindingCompleteContext.DataSourceUpdate && e.Exception == null)
// If not, end the current edit.
e.Binding.BindingManagerBase.EndCurrentEdit(); ;
}
Dim WithEvents bmb As BindingManagerBase
Private Sub InitializeControlsAndData()
' Initialize the controls and set location, size and
' other basic properties.
Me.dataGridView1 = New DataGridView()
Me.textBox1 = New TextBox()
Me.textBox2 = New TextBox()
Me.dataGridView1.ColumnHeadersHeightSizeMode = _
DataGridViewColumnHeadersHeightSizeMode.AutoSize
Me.dataGridView1.Dock = DockStyle.Top
Me.dataGridView1.Location = New Point(0, 0)
Me.dataGridView1.Size = New Size(292, 150)
Me.textBox1.Location = New Point(132, 156)
Me.textBox1.Size = New Size(100, 20)
Me.textBox2.Location = New Point(12, 156)
Me.textBox2.Size = New Size(100, 20)
Me.ClientSize = New Size(292, 266)
Me.Controls.Add(Me.textBox2)
Me.Controls.Add(Me.textBox1)
Me.Controls.Add(Me.dataGridView1)
' Declare the DataSet and add a table and column.
Dim set1 As New DataSet()
set1.Tables.Add("Menu")
set1.Tables(0).Columns.Add("Beverages")
' Add some rows to the table.
set1.Tables(0).Rows.Add("coffee")
set1.Tables(0).Rows.Add("tea")
set1.Tables(0).Rows.Add("hot chocolate")
set1.Tables(0).Rows.Add("milk")
set1.Tables(0).Rows.Add("orange juice")
' Add the control data bindings.
dataGridView1.DataSource = set1
dataGridView1.DataMember = "Menu"
textBox1.DataBindings.Add("Text", set1, "Menu.Beverages", _
True, DataSourceUpdateMode.OnPropertyChanged)
textBox2.DataBindings.Add("Text", set1, "Menu.Beverages", _
True, DataSourceUpdateMode.OnPropertyChanged)
' Get the BindingManagerBase for this binding.
bmb = Me.BindingContext(set1, "Menu")
End Sub
Private Sub bmb_BindingComplete(ByVal sender As Object, ByVal e As BindingCompleteEventArgs) _
Handles bmb.BindingComplete
' Check if the data source has been updated, and that no error has occurred.
If e.BindingCompleteContext = BindingCompleteContext.DataSourceUpdate _
AndAlso e.Exception Is Nothing Then
' If not, end the current edit.
e.Binding.BindingManagerBase.EndCurrentEdit()
End If
End Sub