DetailsView.ModeChanged Händelse
Definition
Viktigt
En del information gäller för förhandsversionen av en produkt och kan komma att ändras avsevärt innan produkten blir allmänt tillgänglig. Microsoft lämnar inga garantier, uttryckliga eller underförstådda, avseende informationen som visas här.
Inträffar när en DetailsView kontroll försöker ändra mellan redigerings-, infognings- och skrivskyddat läge, men när egenskapen CurrentMode har uppdaterats.
public:
event EventHandler ^ ModeChanged;public event EventHandler ModeChanged;member this.ModeChanged : EventHandler Public Custom Event ModeChanged As EventHandler Händelsetyp
Exempel
Följande kodexempel visar hur du använder ModeChanged händelsen för att visa aktuellt läge på rubrikraden.
<%@ 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 CustomerDetailView_ModeChanged(Object sender, EventArgs e)
{
// Display the current mode in the header row.
switch (CustomerDetailView.CurrentMode)
{
case DetailsViewMode.Edit:
CustomerDetailView.HeaderText = "Edit Mode";
CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Red;
CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.LightGray;
break;
case DetailsViewMode.Insert:
CustomerDetailView.HeaderText = "Insert Mode";
CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Green;
CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.Yellow;
break;
case DetailsViewMode.ReadOnly:
CustomerDetailView.HeaderText = "Read-Only Mode";
CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Blue;
CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.White;
break;
default:
CustomerDetailView.HeaderText = "Error!";
break;
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsView ModeChanged Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsView ModeChanged Example</h3>
<asp:detailsview id="CustomerDetailView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneraterows="true"
autogenerateeditbutton="true"
autogenerateinsertbutton="true"
allowpaging="true"
headertext="Read-Only Mode"
onmodechanged="CustomerDetailView_ModeChanged"
runat="server">
<fieldheaderstyle backcolor="Navy"
forecolor="White"/>
<headerstyle forecolor="Blue"/>
</asp:detailsview>
<!-- 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="DetailsViewSource" runat="server"
ConnectionString=
"<%$ ConnectionStrings:NorthWindConnectionString%>"
InsertCommand="INSERT INTO [Customers]([CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country]) VALUES (@CustomerID, @CompanyName, @Address, @City, @PostalCode, @Country)"
SelectCommand="Select [CustomerID], [CompanyName],
[Address], [City], [PostalCode], [Country] From
[Customers]">
</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 CustomerDetailView_ModeChanged(ByVal sender As Object, ByVal e As EventArgs)
' Display the current mode in the header row.
Select Case CustomerDetailView.CurrentMode
Case DetailsViewMode.Edit
CustomerDetailView.HeaderText = "Edit Mode"
CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Red
CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.LightGray
Case DetailsViewMode.Insert
CustomerDetailView.HeaderText = "Insert Mode"
CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Green
CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.Yellow
Case DetailsViewMode.ReadOnly
CustomerDetailView.HeaderText = "Read-Only Mode"
CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Blue
CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.White
Case Else
CustomerDetailView.HeaderText = "Error!"
End Select
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsView ModeChanged Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsView ModeChanged Example</h3>
<asp:detailsview id="CustomerDetailView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneraterows="true"
autogenerateeditbutton="true"
autogenerateinsertbutton="true"
allowpaging="true"
headertext="Read-Only Mode"
onmodechanged="CustomerDetailView_ModeChanged"
runat="server">
<fieldheaderstyle backcolor="Navy"
forecolor="White"/>
<headerstyle forecolor="Blue"/>
</asp:detailsview>
<!-- 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="DetailsViewSource" runat="server"
ConnectionString=
"<%$ ConnectionStrings:NorthWindConnectionString%>"
InsertCommand="INSERT INTO [Customers]([CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country]) VALUES (@CustomerID, @CompanyName, @Address, @City, @PostalCode, @Country)"
SelectCommand="Select [CustomerID], [CompanyName],
[Address], [City], [PostalCode], [Country] From
[Customers]">
</asp:SqlDataSource>
</form>
</body>
</html>
Kommentarer
Händelsen ModeChanged utlöses när en DetailsView kontroll försöker ändra mellan redigerings-, infognings- och skrivskyddat läge, men när egenskapen CurrentMode har uppdaterats. På så sätt kan du tillhandahålla en händelsehanterare som utför en anpassad rutin, till exempel synkronisering av DetailsView kontrollen med en annan kontroll, när den här händelsen inträffar.
Mer information om hur du hanterar händelser finns i Hantera och höja händelser.
