Control.DataBinding Event
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Occurs when the server control binds to a data source.
public:
event EventHandler ^ DataBinding;
public event EventHandler DataBinding;
member this.DataBinding : EventHandler
Public Custom Event DataBinding As EventHandler
Event Type
Examples
/* Create a class that implements the ITemplate interface.
This class overrides the InstantiateIn method to always
place templates in a Literal object. It also creates a
custom BindData method that is used as the event handler
associated with the Literal object's DataBinding event.
*/
using System;
using System.Web;
using System.Data;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace UsingItemTemplates
{
public class GenericItem : ITemplate
{
private string column;
public GenericItem(string column)
{
this.column = column;
}
// Override the ITemplate.InstantiateIn method to ensure
// that the templates are created in a Literal control and
// that the Literal object's DataBinding event is associated
// with the BindData method.
public void InstantiateIn(Control container)
{
Literal l = new Literal();
l.DataBinding += new EventHandler(this.BindData);
container.Controls.Add(l);
}
// Create a public method that will handle the
// DataBinding event called in the InstantiateIn method.
public void BindData(object sender, EventArgs e)
{
Literal l = (Literal) sender;
DataGridItem container = (DataGridItem) l.NamingContainer;
l.Text = ((DataRowView) container.DataItem)[column].ToString();
}
}
}
' Create a class that implements the ITemplate interface.
' This class overrides the InstantiateIn method to always
' place templates in a Literal object. It also creates a
' custom BindData method that is used as the event handler
' associated with the Literal object's DataBinding event.
Imports System.Web
Imports System.Data
Imports System.Web.UI
Imports System.Web.UI.WebControls
Namespace UsingItemTemplatesVB
Public Class GenericItem
Implements ITemplate
Private column As String
Public Sub New(column As String)
Me.column = column
End Sub
' Override the ITemplate.InstantiateIn method to ensure
' that the templates are created in a Literal control and
' that the Literal object's DataBinding event is associated
' with the BindData method.
Public Sub InstantiateIn(container As Control) Implements ITemplate.InstantiateIn
Dim l As New Literal()
AddHandler l.DataBinding, AddressOf Me.BindData
container.Controls.Add(l)
End Sub
' Create a public method that will handle the
' DataBinding event called in the InstantiateIn method.
Public Sub BindData(sender As Object, e As EventArgs)
Dim l As Literal = CType(sender, Literal)
Dim container As DataGridItem = CType(l.NamingContainer, DataGridItem)
l.Text = CType(container.DataItem, DataRowView)(column).ToString()
End Sub
End Class
End Namespace 'UsingItemTemplatesVB
Remarks
This event notifies the server control to perform any data-binding logic that has been written for it.
Applies to
See also
GitHub에서 Microsoft와 공동 작업
이 콘텐츠의 원본은 GitHub에서 찾을 수 있으며, 여기서 문제와 끌어오기 요청을 만들고 검토할 수도 있습니다. 자세한 내용은 참여자 가이드를 참조하세요.
.NET
피드백
https://aka.ms/ContentUserFeedback
출시 예정: 2024년 내내 콘텐츠에 대한 피드백 메커니즘으로 GitHub 문제를 단계적으로 폐지하고 이를 새로운 피드백 시스템으로 바꿀 예정입니다. 자세한 내용은 다음을 참조하세요.다음에 대한 사용자 의견 제출 및 보기