ParameterCollection.Remove(Parameter) 方法
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。
從 Parameter 集合中移除指定的 ParameterCollection 物件。
public:
void Remove(System::Web::UI::WebControls::Parameter ^ parameter);public void Remove (System.Web.UI.WebControls.Parameter parameter);member this.Remove : System.Web.UI.WebControls.Parameter -> unitPublic Sub Remove (parameter As Parameter)參數
- parameter
- Parameter
要從 Parameter 移除的 ParameterCollection。
範例
下列程式碼範例示範如何使用 Remove 方法和 Item[] 索引子，從 ParameterCollection 集合中移除 Parameter 物件。 在此範例中，會將數 QueryStringParameter 個 SelectParameters 物件新增至集合、從集合中移除一個 QueryStringParameter 物件，並在頁面載入時列印集合的順序。
<%@page Language="C#" %>
<SCRIPT runat="server">
private void Page_Load(object sender, EventArgs e) {
SqlDataSource aSqlDataSource = new SqlDataSource();
// Security Note: The SqlDataSource uses a QueryStringParameter,
// Security Note: which does not perform validation of input from the client.
QueryStringParameter qs1 =
new QueryStringParameter("QueryStringParam1","requestfield1");
aSqlDataSource.SelectParameters.Add(qs1);
QueryStringParameter qs2 =
new QueryStringParameter("QueryStringParam2","requestfield2");
aSqlDataSource.SelectParameters.Add(qs2);
QueryStringParameter qs3 =
new QueryStringParameter("QueryStringParam3","requestfield3");
aSqlDataSource.SelectParameters.Add(qs3);
// Remove the QueryStringParameter named QueryStringParameter2
// using the Remove method and the ParameterCollection indexer
// property.
aSqlDataSource.SelectParameters.Remove( aSqlDataSource.SelectParameters["QueryStringParam2"] );
// Iterate through the ParameterCollection and print out the
// names of the Parameters contained by it.
foreach (Parameter aParameter in aSqlDataSource.SelectParameters) {
Response.Write(aParameter.Name + "<BR>");
}
}
</SCRIPT>
<%@page Language="VB" %>
<SCRIPT runat="server">
Sub Page_Load(sender As Object, e As EventArgs)
Dim aSqlDataSource As New SqlDataSource()
' Security Note: The SqlDataSource uses a QueryStringParameter,
' Security Note: which does not perform validation of input from the client.
Dim qs1 As New QueryStringParameter("QueryStringParam1","requestfield1")
aSqlDataSource.SelectParameters.Add(qs1)
Dim qs2 As New QueryStringParameter("QueryStringParam2","requestfield2")
aSqlDataSource.SelectParameters.Add(qs2)
Dim qs3 As New QueryStringParameter("QueryStringParam3","requestfield3")
aSqlDataSource.SelectParameters.Add(qs3)
' Remove the QueryStringParameter named QueryStringParameter2
' using the Remove method and the ParameterCollection indexer
' property.
aSqlDataSource.SelectParameters.Remove( aSqlDataSource.SelectParameters("QueryStringParam2") )
' Iterate through the ParameterCollection and print out the
' names of the Parameters contained by it.
Dim aParameter As Parameter
For Each aParameter in aSqlDataSource.SelectParameters
Response.Write(aParameter.Name & "<BR>")
Next
End Sub ' Page_Load
</SCRIPT>
備註
使用這個方法可從集合中移除指定的 Parameter 物件 ParameterCollection 。