DetailsViewInsertEventArgs.CommandArgument 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 argumen perintah untuk operasi sisipkan yang diteruskan ke DetailsView kontrol.
public:
property System::Object ^ CommandArgument { System::Object ^ get(); };
public object CommandArgument { get; }
member this.CommandArgument : obj
Public ReadOnly Property CommandArgument As Object
Nilai Properti
Argumen perintah untuk operasi sisipkan diteruskan ke DetailsView kontrol.
Contoh
Contoh kode berikut menunjukkan cara mengatur CommandArgument properti Button kontrol dan mengambil dan menggunakan nilai selama ItemInserting peristiwa.
<%@ 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 CustomerDetailsView_ItemInserting(Object sender, DetailsViewInsertEventArgs e)
{
// Use the Values property to retrieve the key field value.
String keyValue = e.Values["CustomerID"].ToString();
if (((string)(e.CommandArgument)) == "CheckID")
{
// Insert the record only if the key field is four characters
// long; otherwise, cancel the insert operation.
if (keyValue.Length == 4)
{
// Change the key field value to upper case before inserting
// the record in the data source.
e.Values["CustomerID"] = keyValue.ToUpper();
MessageLabel.Text = "";
}
else
{
MessageLabel.Text = "The key field must have four digits.";
e.Cancel = true;
}
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsViewInsertEventArgs Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsViewInsertEventArgs Example</h3>
<asp:detailsview id="CustomerDetailsView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneraterows="true"
allowpaging="true" AutoGenerateInsertButton="true"
oniteminserting="CustomerDetailsView_ItemInserting"
runat="server">
<Fields>
<asp:TemplateField >
<InsertItemTemplate>
<asp:Button CommandName="Insert" CommandArgument="CheckID"
runat="server" Text="Insert with ID Check" BackColor="green" />
</InsertItemTemplate>
</asp:TemplateField>
</Fields>
</asp:detailsview>
<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="DetailsViewSource"
selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
insertcommand="INSERT INTO [Customers]([CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country]) VALUES (@CustomerID, @CompanyName, @Address, @City, @PostalCode, @Country)"
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 CustomerDetailsView_ItemInserting(ByVal sender As Object, ByVal e As DetailsViewInsertEventArgs)
' Use the Values property to retrieve the key field value.
Dim keyValue As String = e.Values("CustomerID").ToString()
If CStr(e.CommandArgument) = "CheckID" Then
' Insert the record only if the key field is four characters
' long; otherwise, cancel the insert operation.
If keyValue.Length = 4 Then
' Change the key field value to upper case before inserting
' the record in the data source.
e.Values("CustomerID") = keyValue.ToUpper()
MessageLabel.Text = ""
Else
MessageLabel.Text = "The key field must have four digits."
e.Cancel = True
End If
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsViewInsertEventArgs Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsViewInsertEventArgs Example</h3>
<asp:detailsview id="CustomerDetailsView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneraterows="true"
allowpaging="true" AutoGenerateInsertButton="true"
oniteminserting="CustomerDetailsView_ItemInserting"
runat="server">
<Fields>
<asp:TemplateField >
<InsertItemTemplate>
<asp:Button ID="Button1" CommandName="Insert" CommandArgument="CheckID"
runat="server" Text="Insert with ID Check" BackColor="green" />
</InsertItemTemplate>
</asp:TemplateField>
</Fields>
</asp:detailsview>
<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="DetailsViewSource"
selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
insertcommand="INSERT INTO [Customers]([CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country]) VALUES (@CustomerID, @CompanyName, @Address, @City, @PostalCode, @Country)"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
Keterangan
CommandArgument Gunakan properti untuk menentukan nilai argumen perintah yang diteruskan ke DetailsView kontrol. Properti CommandArgument digunakan untuk membawa informasi tambahan tentang penyisipan.
Berlaku untuk
Lihat juga
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