FormView.CurrentMode 屬性
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
取得 FormView 控制項目前的資料輸入模式。
public:
property System::Web::UI::WebControls::FormViewMode CurrentMode { System::Web::UI::WebControls::FormViewMode get(); };[System.ComponentModel.Browsable(false)]
public System.Web.UI.WebControls.FormViewMode CurrentMode { get; }[<System.ComponentModel.Browsable(false)>]
member this.CurrentMode : System.Web.UI.WebControls.FormViewModePublic ReadOnly Property CurrentMode As FormViewMode屬性值
其中一個 FormViewMode 值。
- 屬性
範例
下列範例示範如何使用 CurrentMode 屬性來判斷控制項是否 FormView 處於編輯、插入或唯讀模式。 如果使用者嘗試在控制項編輯時 FormView 巡覽至另一筆記錄，則會取消分頁作業。
<%@ 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 EmployeeFormView_OnPageIndexChanging(Object sender, FormViewPageEventArgs e)
{
// Cancel the paging operation if the user attempts to navigate
// to another record while the FormView control is in edit mode.
if (EmployeeFormView.CurrentMode == FormViewMode.Edit)
{
e.Cancel = true;
MessageLabel.Text =
"Please complete the update operation before navigating to another record.";
}
}
void EmployeeFormView_OnModeChanged(Object sender, EventArgs e)
{
// Clear the message label.
MessageLabel.Text = "";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormView Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormView Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
emptydatatext="No employees found."
onpageindexchanging="EmployeeFormView_OnPageIndexChanging"
onmodechanged="EmployeeFormView_OnModeChanged"
runat="server">
<rowstyle backcolor="LightGreen"
wrap="false"/>
<editrowstyle backcolor="LightBlue"
wrap="false"/>
<itemtemplate>
<table>
<tr>
<td rowspan="4">
<asp:image id="EmployeeImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b>Name:</b>
</td>
<td>
<%# Eval("FirstName") %> <%# Eval("LastName") %>
</td>
</tr>
<tr>
<td>
<b>Title:</b>
</td>
<td>
<%# Eval("Title") %>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="Edit"
text="Edit"
commandname="Edit"
runat="server"/>
</td>
</tr>
</table>
</itemtemplate>
<edititemtemplate>
<table>
<tr>
<td rowspan="4">
<asp:image id="EmployeeEditImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b>Name:</b>
</td>
<td>
<asp:textbox id="FirstNameUpdateTextBox"
text='<%# Bind("FirstName") %>'
runat="server"/>
<asp:textbox id="LastNameUpdateTextBox"
text='<%# Bind("LastName") %>'
runat="server"/>
</td>
</tr>
<tr>
<td>
<b>Title:</b>
</td>
<td>
<asp:textbox id="TitleUpdateTextBox"
text='<%# Bind("Title") %>'
runat="server"/>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="UpdateButton"
text="Update"
commandname="Update"
runat="server"/>
<asp:linkbutton id="CancelButton"
text="Cancel"
commandname="Cancel"
runat="server"/>
</td>
</tr>
</table>
</edititemtemplate>
</asp:formview>
<br/><br/>
<asp:Label id="MessageLabel"
forecolor="Red"
runat="server"/>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
updatecommand="Update [Employees] Set [LastName]=@LastName, [FirstName]=@FirstName, [Title]=@Title Where [EmployeeID]=@EmployeeID"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</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 EmployeeFormView_OnPageIndexChanging(ByVal sender As Object, ByVal e As FormViewPageEventArgs)
' Cancel the paging operation if the user attempts to navigate
' to another record while the FormView control is in edit mode.
If EmployeeFormView.CurrentMode = FormViewMode.Edit Then
e.Cancel = True
MessageLabel.Text = _
"Please complete the update operation before navigating to another record."
End If
End Sub
Sub EmployeeFormView_OnModeChanged(ByVal sender As Object, ByVal e As EventArgs)
' Clear the message label.
MessageLabel.Text = ""
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormView Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormView Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
emptydatatext="No employees found."
onpageindexchanging="EmployeeFormView_OnPageIndexChanging"
onmodechanged="EmployeeFormView_OnModeChanged"
runat="server">
<rowstyle backcolor="LightGreen"
wrap="false"/>
<editrowstyle backcolor="LightBlue"
wrap="false"/>
<itemtemplate>
<table>
<tr>
<td rowspan="4">
<asp:image id="EmployeeImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b>Name:</b>
</td>
<td>
<%# Eval("FirstName") %> <%# Eval("LastName") %>
</td>
</tr>
<tr>
<td>
<b>Title:</b>
</td>
<td>
<%# Eval("Title") %>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="Edit"
text="Edit"
commandname="Edit"
runat="server"/>
</td>
</tr>
</table>
</itemtemplate>
<edititemtemplate>
<table>
<tr>
<td rowspan="4">
<asp:image id="EmployeeEditImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b>Name:</b>
</td>
<td>
<asp:textbox id="FirstNameUpdateTextBox"
text='<%# Bind("FirstName") %>'
runat="server"/>
<asp:textbox id="LastNameUpdateTextBox"
text='<%# Bind("LastName") %>'
runat="server"/>
</td>
</tr>
<tr>
<td>
<b>Title:</b>
</td>
<td>
<asp:textbox id="TitleUpdateTextBox"
text='<%# Bind("Title") %>'
runat="server"/>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="UpdateButton"
text="Update"
commandname="Update"
runat="server"/>
<asp:linkbutton id="CancelButton"
text="Cancel"
commandname="Cancel"
runat="server"/>
</td>
</tr>
</table>
</edititemtemplate>
</asp:formview>
<br/><br/>
<asp:Label id="MessageLabel"
forecolor="Red"
runat="server"/>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
updatecommand="Update [Employees] Set [LastName]=@LastName, [FirstName]=@FirstName, [Title]=@Title Where [EmployeeID]=@EmployeeID"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
備註
CurrentMode使用 屬性來判斷 FormView 控制項是否處於編輯、插入或唯讀模式。 下表列出不同的模式值。
| [模式] | 描述 |
|---|---|
FormViewMode.Edit |
控制項 FormView 處於編輯模式，可讓使用者更新記錄的值。 |
FormViewMode.Insert |
控制項 FormView 處於插入模式，可讓使用者將新記錄新增至資料來源。 |
FormView.ReadOnly |
控制項 FormView 處於唯讀模式，這是一般顯示模式。 |
按一下 [新增]、[更新]、[插入]、[刪除] 或 [取消] 命令按鈕時，控制項通常會自動 FormView 設定此值。 FormView當控制項變更回應動作的模式時，會引發下表中的事件。 這可讓您建立自訂事件處理常式，以在事件發生時執行適當的常式。
| 事件 | 描述 |
|---|---|
| ModeChanged | 發生于 FormView 控制項變更模式時，但在模式變更之後。 每當控制項變更模式時， FormView 通常會使用此事件來執行工作。 |
| ModeChanging | 發生于 FormView 控制項變更模式時，但在模式變更之前。 此事件通常用來取消模式變更。 |
注意 當您使用 ChangeMode 方法以程式設計方式變更模式時，不會引發這些事件。
