ButtonField 생성자
정의
중요
일부 정보는 릴리스되기 전에 상당 부분 수정될 수 있는 시험판 제품과 관련이 있습니다. Microsoft는 여기에 제공된 정보에 대해 어떠한 명시적이거나 묵시적인 보증도 하지 않습니다.
ButtonField 클래스의 새 인스턴스를 초기화합니다.
public:
ButtonField();public ButtonField ();Public Sub New ()예제
다음 코드 예제에는 추가할 M:System.Web.UI.WebControls.ButtonField.#ctor 생성자를 사용 하는 방법을 보여 줍니다.는 ButtonField 개체를 동적으로 GridView 제어 합니다.
<%@ Page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void CustomersGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
{
// If multiple ButtonField column fields are used, use the
// CommandName property to determine which button was clicked.
if(e.CommandName=="Select")
{
// Convert the row index stored in the CommandArgument
// property to an Integer.
int index = Convert.ToInt32(e.CommandArgument);
// Get the last name of the selected Customer from the appropriate
// cell in the GridView control.
GridViewRow selectedRow = CustomersGridView.Rows[index];
TableCell contactCell = selectedRow.Cells[1];
string contact = contactCell.Text;
// Display the selected Customer.
Message.Text = "You selected " + contact + ".";
}
}
void Page_Load(Object sender, EventArgs e)
{
// The field columns need to be created only the first time
// the page is loaded.
if (!IsPostBack)
{
// Dynamically create field columns to display the desired
// fields from the data source.
// Create a ButtonField object to allow the user to
// select an Customer.
ButtonField selectButtonField = new ButtonField ();
selectButtonField.ButtonType = ButtonType.Button;
selectButtonField.CommandName = "Select";
selectButtonField.HeaderText = "Select Customer";
selectButtonField.Text = "Select";
// Create a BoundField object to display an Customer's last name.
BoundField contactNameBoundField = new BoundField();
contactNameBoundField.DataField = "ContactName";
contactNameBoundField.HeaderText = "Contact Name";
// Create a BoundField object to display an Customer's first name.
BoundField contactTitleBoundField = new BoundField();
contactTitleBoundField.DataField = "ContactTitle";
contactTitleBoundField.HeaderText = "Contact Title";
// Add the field columns to the Columns collection of the
// GridView control.
CustomersGridView.Columns.Add (selectButtonField);
CustomersGridView.Columns.Add(contactNameBoundField);
CustomersGridView.Columns.Add(contactTitleBoundField);
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ButtonField Constructor Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ButtonField Constructor Example</h3>
<asp:label id="Message"
forecolor="Red"
runat="server"
AssociatedControlID="CustomersGridView"/>
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSqlDataSource"
autogeneratecolumns="False"
onrowcommand="CustomersGridView_RowCommand"
runat="server">
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. -->
<asp:sqldatasource id="CustomersSqlDataSource"
selectcommand="Select [CustomerID], [CompanyName], [ContactName], [ContactTitle] From [Customers]"
connectionstring="<%$ ConnectionStrings:NorthWindConnection%>"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
<%@ Page language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Sub CustomersGridView_RowCommand(ByVal sender As Object, ByVal e As GridViewCommandEventArgs)
' If multiple ButtonField column fields are used, use the
' CommandName property to determine which button was clicked.
If e.CommandName = "Select" Then
' Convert the row index stored in the CommandArgument
' property to an Integer.
Dim index As Integer = Convert.ToInt32(e.CommandArgument)
' Get the last name of the selected Customer from the appropriate
' cell in the GridView control.
Dim selectedRow As GridViewRow = CustomersGridView.Rows(index)
Dim contactNameCell As TableCell = selectedRow.Cells(1)
Dim contactName As String = contactNameCell.Text
' Display the selected Customer.
Message.Text = "You selected " & contactName & "."
End If
End Sub
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
' The field columns need to be created only the first time
' the page is loaded.
If Not IsPostBack Then
' Dynamically create field columns to display the desired
' fields from the data source.
' Create a ButtonField object to allow the user to
' select an Customer.
Dim selectButtonField As New ButtonField
selectButtonField.ButtonType = ButtonType.Button
selectButtonField.CommandName = "Select"
selectButtonField.HeaderText = "Select Customer"
selectButtonField.Text = "Select"
' Create a BoundField object to display an Customer's last name.
Dim contactNameBoundField As New BoundField
contactNameBoundField.DataField = "ContactName"
contactNameBoundField.HeaderText = "Contact Name"
' Create a BoundField object to display an Customer's first name.
Dim contactTitleBoundField As New BoundField
contactTitleBoundField.DataField = "ContactTitle"
contactTitleBoundField.HeaderText = "Contact Title"
' Add the field columns to the Columns collection of the
' GridView control.
CustomersGridView.Columns.Add(selectButtonField)
CustomersGridView.Columns.Add(contactNameBoundField)
CustomersGridView.Columns.Add(contactTitleBoundField)
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ButtonField Constructor Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ButtonField Constructor Example</h3>
<asp:label id="Message"
forecolor="Red"
runat="server"
AssociatedControlID="CustomersGridView"/>
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSqlDataSource"
autogeneratecolumns="False"
onrowcommand="CustomersGridView_RowCommand"
runat="server">
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. -->
<asp:sqldatasource id="CustomersSqlDataSource"
selectcommand="Select [CustomerID], [CompanyName], [ContactName], [ContactTitle] From [Customers]"
connectionstring="<%$ ConnectionStrings:NorthWindConnection%>"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
설명
사용 된 ButtonField 의 새 인스턴스를 초기화 하는 생성자를 ButtonField 클래스입니다. 이 생성자는 필드를 동적으로 생성된 하는 데이터 바인딩된 컨트롤을 추가할 때 일반적으로 사용 됩니다.
추가 하는 ButtonField 데이터 바인딩된 컨트롤에 동적으로 개체를 새 ButtonField 개체 속성을 설정 하 고 다음 데이터 바인딩된 컨트롤에 대 한 필드 컬렉션에 추가 합니다. 예를 들어, 사용 중인 경우는 GridView 컨트롤을 추가 합니다 ButtonField 개체를 Columns 컬렉션.
참고
추가할 수 있지만 필드 동적 데이터 바인딩된 컨트롤에 필드는 정적으로 선언 하 고 다음 표시 하거나 숨길 수를 적절 하 게 합니다. 모든 필드를 정적으로 선언 된 부모 데이터 바인딩된 컨트롤에 대 한 뷰 상태의 크기를 줄입니다.