ReportViewer.Drillthrough 事件
發生在選取鑽研項目時。
命名空間： Microsoft.Reporting.WebForms
組件： Microsoft.ReportViewer.WebForms (在 Microsoft.ReportViewer.WebForms.dll 中)
語法
'宣告
Public Event Drillthrough As DrillthroughEventHandler
'用途
Dim instance As ReportViewer
Dim handler As DrillthroughEventHandler
AddHandler instance.Drillthrough, handler
public event DrillthroughEventHandler Drillthrough
public:
event DrillthroughEventHandler^ Drillthrough {
void add (DrillthroughEventHandler^ value);
void remove (DrillthroughEventHandler^ value);
}
member Drillthrough : IEvent<DrillthroughEventHandler,
DrillthroughEventArgs>
JScript 支援使用事件，但不支援新的宣告。
備註
這個事件發生在選取鑽研項目時。這個事件的相關資訊會在 DrillThroughEventArgs 物件中傳遞至 DrillThroughEventHandler 委派，由它來處理事件。
如需處理事件的詳細資訊，請參閱Consuming Events。
範例
下列程式碼範例會載入包含一連串鑽研項目的範例報表，並設定事件處理常式來處理鑽研事件。傳遞至鑽研事件處理常式的引數包括鑽研報表物件。事件處理常式會將資料來源加入至這個報表，然後才會在 ReportViewer 控制項中轉譯鑽研報表。
Imports System.Data
Imports Microsoft.Reporting.WebForms
Partial Class _Default
Inherits System.Web.UI.Page
Private Function LoadEmployeesData() As DataTable
Dim dataSet As New DataSet()
dataSet.ReadXml("c:\My Reports\employees.xml")
LoadEmployeesData = dataSet.Tables(0)
End Function
Private Function LoadDepartmentsData()
Dim dataSet As New DataSet()
dataSet.ReadXml("c:\My Reports\departments.xml")
LoadDepartmentsData = dataSet.Tables(0)
End Function
Public Sub DemoDrillthroughEventHandler(ByVal sender As Object, ByVal e As DrillthroughEventArgs)
Dim localReport = e.Report
localReport.DataSources.Add(New ReportDataSource("Employees", LoadEmployeesData()))
End Sub
Private Sub Form1_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
If (Not IsPostBack) Then
' Set RDL file.
ReportViewer1.LocalReport.ReportPath = "c:\My Reports\Departments.rdlc"
' Supply a DataTable corresponding to each report data source.
Dim myReportDataSource = New ReportDataSource("Departments", LoadDepartmentsData())
ReportViewer1.LocalReport.DataSources.Add(myReportDataSource)
End If
'Add a handler for drillthrough.
AddHandler ReportViewer1.Drillthrough, AddressOf DemoDrillthroughEventHandler
End Sub
End Class
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Microsoft.Reporting.WebForms;
public partial class _Default : System.Web.UI.Page
{
private DataTable LoadEmployeesData()
{
DataSet dataSet = new DataSet();
dataSet.ReadXml(@"c:\My Reports\employees.xml");
return dataSet.Tables[0];
}
private DataTable LoadDepartmentsData()
{
DataSet dataSet = new DataSet();
dataSet.ReadXml(@"c:\My Reports\departments.xml");
return dataSet.Tables[0];
}
void DemoDrillthroughEventHandler(object sender, DrillthroughEventArgs e)
{
LocalReport localReport = (LocalReport)e.Report;
localReport.DataSources.Add(new ReportDataSource("Employees",
LoadEmployeesData()));
}
protected void Page_Init(object sender, EventArgs e)
{
if (!IsPostBack)
{
// On initial page load
ReportViewer1.LocalReport.ReportPath = @"c:\My Reports\Departments.rdlc";
// Supply a DataTable corresponding to each report data source.
ReportViewer1.LocalReport.DataSources.Add(
new ReportDataSource("Departments", LoadDepartmentsData()));
}
// Add the handler for drillthrough.
ReportViewer1.Drillthrough += new DrillthroughEventHandler(DemoDrillthroughEventHandler);
}
}