File Content Extraction 25.1
Viewing SDK Programming Guide

# Introduction

## Persistent Properties

Persistent properties are those that can be set in the Properties page at design time. The selected value is stored as a part of your project and used at runtime.

## Property Naming Conventions in .NET

In J#, C#, and C++, all ActiveX control method names in the .NET class are the same as their COM counterparts. However, individual properties in .NET are defined using `get` and `set` methods of the following format:

    get_property_name

    set_property name

For example:

    private void button1_Click(Object sender, System.EventArgs e)
    {
        this.axKEYview1.set_RegIniMode((short)1);
        this.axKEYview1.set_RegIniName("c:\\windows\\kvsdk.ini");
        this.axKEYview1.Open("c:\\test.doc");
    }

IMPORTANT: In a Visual Basic .NET application, all properties and methods are used in the same way as in a Visual Basic COM application.

See Develop .NET Applications for more information.

## "OPEN" Properties

The "`Open`" properties (such as `OPENWaitUponOpen` and `OPENMode`) apply to the `Open` method. However, they do not apply to the initial call to the `Open` method; that is, they do not affect the currently opened document, and apply only to documents opened with subsequent calls to the `Open` method. These properties are persistent and are available through the Properties page.

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Version 25.1 | Last updated January 2025

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Product: File Content Extraction 25.1

Topic Title: Introduction