Help2.GetPrevTopic(String) Method
Definition
Important
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Given a URL returns the previous URL in the table of contents.
public:
System::String ^ GetPrevTopic(System::String ^ bstrURL);public:
Platform::String ^ GetPrevTopic(Platform::String ^ bstrURL);std::wstring GetPrevTopic(std::wstring const & bstrURL);[System.Runtime.InteropServices.DispId(15)]
public string GetPrevTopic (string bstrURL);[<System.Runtime.InteropServices.DispId(15)>]
abstract member GetPrevTopic : string -> stringPublic Function GetPrevTopic (bstrURL As String) As StringParameters
- bstrURL
- String
String containing the URL of the current topic that is compatible with Internet Explorer.
Returns
Returns a string containing the URL of the previous topic in the table of contents.
Implements
- Attributes
Examples
Create a Visual Studio add-in by using Visual C# as described in How to: Create an Add-In. Add references to Microsoft.VisualStudio.VSHelp, Microsoft.VisualStudio.VSHelp80, and System.Windows.Forms. Replace the code in the OnConnection method in the Connect.cs file with the following code. Run the code example as described in How to: Compile and Run the Automation Object Model Code Examples.
using System;
using Extensibility;
using EnvDTE;
using EnvDTE80;
using Microsoft.VisualStudio.VSHelp;
using Microsoft.VisualStudio.VSHelp80;
using System.Windows.Forms;
public void OnConnection(object application,
ext_ConnectMode connectMode, object addInInst, ref Array custom)
{
_applicationObject = (DTE2)application;
_addInInstance = (AddIn)addInInst;
HelpGetPrevURLExample(_applicationObject);
}
public void HelpGetPrevURLExample(DTE2 dte)
{
// Returns and displays the URL of the topic that precedes
// the topic specified
// by the URL in the table of contents.
try
{
Microsoft.VisualStudio.VSHelp80.Help2 help2 =
(Microsoft.VisualStudio.VSHelp80.Help2)_applicationObject.GetObject ("Help2");
// Get the URL of the topic that precedes
// Introducing Visual Studio
// and display it.
MessageBox.Show("The previous URL before the supplied one is "
+ "\n" + help2.GetPrevTopic
("ms-help://MS.VSCC.v80/MS.MSDN.v80/MS.VisualStudio.v80.en
/dv_vstoc/html/99997089-56ff-4d60-81a9-447062dc98ac.htm"));
}
catch (SystemException ex)
{
MessageBox.Show("ERROR: " + ex);
}
}