TemplateField.EditItemTemplate Properti
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Mendapatkan atau mengatur templat untuk menampilkan item dalam mode edit dalam TemplateField objek.
public:
virtual property System::Web::UI::ITemplate ^ EditItemTemplate { System::Web::UI::ITemplate ^ get(); void set(System::Web::UI::ITemplate ^ value); };[System.ComponentModel.Browsable(false)]
[System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)]
[System.Web.UI.TemplateContainer(typeof(System.Web.UI.IDataItemContainer), System.ComponentModel.BindingDirection.TwoWay)]
public virtual System.Web.UI.ITemplate EditItemTemplate { get; set; }[<System.ComponentModel.Browsable(false)>]
[<System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)>]
[<System.Web.UI.TemplateContainer(typeof(System.Web.UI.IDataItemContainer), System.ComponentModel.BindingDirection.TwoWay)>]
member this.EditItemTemplate : System.Web.UI.ITemplate with get, setPublic Overridable Property EditItemTemplate As ITemplateNilai Properti
Objek ITemplateyang diimplementasikan yang berisi templat untuk menampilkan item dalam mode edit dalam .TemplateField Defaultnya adalah null, yang menunjukkan bahwa properti ini tidak diatur.
- Atribut
Contoh
Contoh kode berikut menunjukkan cara menggunakan EditItemTemplate properti untuk membuat templat kustom untuk item dalam mode edit dalam TemplateField kolom GridView bidang kontrol. Templat berisi kontrol server validasi untuk mencegah pengguna meninggalkan bidang nilai kosong.
<%@ 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 AuthorsGridView_RowUpdating (Object sender, GridViewUpdateEventArgs e)
{
// The GridView control does not automatically extract updated values
// from TemplateField column fields. These values must be added manually
// to the NewValues dictionary.
// Get the GridViewRow object that represents the row being edited
// from the Rows collection of the GridView control.
int index = AuthorsGridView.EditIndex;
GridViewRow row = AuthorsGridView.Rows[index];
// Get the controls that contain the updated values. In this
// example, the updated values are contained in the TextBox
// controls declared in the edit item templates of each TemplateField
// column fields in the GridView control.
TextBox lastName = (TextBox)row.FindControl("LastNameTextBox");
TextBox firstName = (TextBox)row.FindControl("FirstNameTextBox");
// Add the updated values to the NewValues dictionary. Use the
// parameter names declared in the parameterized update query
// string for the key names.
e.NewValues["au_lname"] = lastName.Text;
e.NewValues["au_fname"] = firstName.Text;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TemplateField EditItemTemplate Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>TemplateField EditItemTemplate Example</h3>
<!-- The GridView control automatically sets the columns -->
<!-- specified in the datakeynames attribute as read-only. -->
<!-- No input controls are rendered for these columns in -->
<!-- edit mode. -->
<asp:gridview id="AuthorsGridView"
datasourceid="AuthorsSqlDataSource"
autogeneratecolumns="false"
autogenerateeditbutton="true"
datakeynames="au_id"
cellpadding="10"
onrowupdating="AuthorsGridView_RowUpdating"
runat="server">
<columns>
<asp:boundfield datafield="au_id"
headertext="Author ID"
readonly="true"/>
<asp:templatefield headertext="Last Name"
itemstyle-verticalalign="Top">
<itemtemplate>
<%#Eval("au_lname")%>
</itemtemplate>
<edititemtemplate>
<asp:textbox id="LastNameTextBox"
text='<%#Eval("au_lname")%>'
width="90"
runat="server"/>
<br/>
<asp:requiredfieldvalidator id="LastNameRequiredValidator"
controltovalidate="LastNameTextBox"
display="Dynamic"
text="Please enter a last name."
runat="server" />
</edititemtemplate>
</asp:templatefield>
<asp:templatefield headertext="First Name"
itemstyle-verticalalign="Top">
<itemtemplate>
<%#Eval("au_fname")%>
</itemtemplate>
<edititemtemplate>
<asp:textbox id="FirstNameTextBox"
text='<%#Eval("au_fname")%>'
width="90"
runat="server"/>
<br/>
<asp:requiredfieldvalidator id="FirstNameRequiredValidator"
controltovalidate="FirstNameTextBox"
display="Dynamic"
text="Please enter a first name."
runat="server" />
</edititemtemplate>
</asp:templatefield>
<asp:checkboxfield datafield="contract"
headertext="Contract"
readonly="true"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Pubs sample database. -->
<asp:sqldatasource id="AuthorsSqlDataSource"
selectcommand="SELECT [au_id], [au_lname], [au_fname], [contract] FROM [authors]"
updatecommand="UPDATE authors SET au_lname=@au_lname, au_fname=@au_fname WHERE (authors.au_id = @au_id)"
connectionstring="server=localhost;database=pubs;integrated security=SSPI"
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 AuthorsGridView_RowUpdating(ByVal sender As Object, ByVal e As GridViewUpdateEventArgs)
' The GridView control does not automatically extract updated values
' from TemplateField column fields. These values must be added manually
' to the NewValues dictionary.
' Get the GridViewRow object that represents the row being edited
' from the Rows collection of the GridView control.
Dim index As Integer = AuthorsGridView.EditIndex
Dim row As GridViewRow = AuthorsGridView.Rows(index)
' Get the controls that contain the updated values. In this
' example, the updated values are contained in the TextBox
' controls declared in the edit item templates of each TemplateField
' column fields in the GridView control.
Dim lastName As TextBox = CType(row.FindControl("LastNameTextBox"), TextBox)
Dim firstName As TextBox = CType(row.FindControl("FirstNameTextBox"), TextBox)
' Add the updated values to the NewValues dictionary. Use the
' parameter names declared in the parameterized update query
' string for the key names.
e.NewValues("au_lname") = lastName.Text
e.NewValues("au_fname") = firstName.Text
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TemplateField EditItemTemplate Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>TemplateField EditItemTemplate Example</h3>
<!-- The GridView control automatically sets the columns -->
<!-- specified in the datakeynames attribute as read-only. -->
<!-- No input controls are rendered for these columns in -->
<!-- edit mode. -->
<asp:gridview id="AuthorsGridView"
datasourceid="AuthorsSqlDataSource"
autogeneratecolumns="false"
autogenerateeditbutton="true"
datakeynames="au_id"
cellpadding="10"
onrowupdating="AuthorsGridView_RowUpdating"
runat="server">
<columns>
<asp:boundfield datafield="au_id"
headertext="Author ID"
readonly="true"/>
<asp:templatefield headertext="Last Name"
itemstyle-verticalalign="Top">
<itemtemplate>
<%#Eval("au_lname")%>
</itemtemplate>
<edititemtemplate>
<asp:textbox id="LastNameTextBox"
text='<%#Eval("au_lname")%>'
width="90"
runat="server"/>
<br/>
<asp:requiredfieldvalidator id="LastNameRequiredValidator"
controltovalidate="LastNameTextBox"
display="Dynamic"
text="Please enter a last name."
runat="server" />
</edititemtemplate>
</asp:templatefield>
<asp:templatefield headertext="First Name"
itemstyle-verticalalign="Top">
<itemtemplate>
<%#Eval("au_fname")%>
</itemtemplate>
<edititemtemplate>
<asp:textbox id="FirstNameTextBox"
text='<%#Eval("au_fname")%>'
width="90"
runat="server"/>
<br/>
<asp:requiredfieldvalidator id="FirstNameRequiredValidator"
controltovalidate="FirstNameTextBox"
display="Dynamic"
text="Please enter a first name."
runat="server" />
</edititemtemplate>
</asp:templatefield>
<asp:checkboxfield datafield="contract"
headertext="Contract"
readonly="true"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Pubs sample database. -->
<asp:sqldatasource id="AuthorsSqlDataSource"
selectcommand="SELECT [au_id], [au_lname], [au_fname], [contract] FROM [authors]"
updatecommand="UPDATE authors SET au_lname=@au_lname, au_fname=@au_fname WHERE (authors.au_id = @au_id)"
connectionstring="server=localhost;database=pubs;integrated security=SSPI"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
Keterangan
EditItemTemplate Gunakan properti untuk menentukan konten kustom yang ditampilkan untuk item yang berada dalam mode edit dalam TemplateField objek. Tentukan konten dengan membuat templat yang menentukan bagaimana item dalam mode edit dirender. Properti EditItemTemplate biasanya berisi kontrol input bagi pengguna untuk memodifikasi nilai dalam sumber data.
Untuk menentukan templat, tempat pertama membuka dan menutup <EditItemTemplate> tag antara tag <TemplateField> pembuka dan penutup elemen. Selanjutnya, tambahkan konten kustom antara tag pembuka dan penutup <EditItemTemplate> . Kontennya bisa sesederhana teks biasa atau lebih kompleks (menyematkan kontrol lain dalam templat, misalnya).
Untuk mengakses kontrol yang ditentukan dalam templat secara terprogram, pertama-tama tentukan objek mana dalam kontrol terikat TableCell data yang berisi kontrol. Selanjutnya, gunakan Controls kumpulan TableCell objek untuk mengakses kontrol. Anda juga dapat menggunakan FindControl metode TableCell objek untuk menemukan kontrol, jika kontrol memiliki properti yang ID ditentukan.
