在C#中使用foreach语句实现调用其它窗体上的控件

当微软推出Visual Studio.NET后,C#作为一种编程语言越来越为人们所熟知,本文通过利用C#语言规范中foreach语句循环访问的功能来“遍历“某(每)控件容器的所有控件,实现调用对其它窗体上某个控件调用的实例,从而启发读者举一反三,充分利用开发软件的潜在功能而心想事成,达到抛砖引玉的效果.     

在C#中巧用foreach语句

本文通过利用C#语言规范中foreach语句循环访问的功能来“遍历”某（每）控件容器的所有控件，实现调用对其它窗体上某个控件调用，或实现对一组控件批量操作的实例，从而启发读者举一反三，充分利用开发软件的潜在功能而心想事成，达到抛砖引玉的效果。     

在VS2005中用C#编写Flash控件

利用VS2005可视化的编程工具,采用C#编程语言编写了一个通用的Web版本的Flash控件,详细介绍了C#控件编写的基本过程,重点介绍了控件的属性编写、html输出编写和设计时支持智能列表编写、文件信息修改、控件图标添加和嵌入资源中的图片调用等。     

设计C#定制控件实现贝塞尔曲线

本文在介绍贝塞尔曲线基础上,利用C#设计定制控件,实现了贝塞尔曲线在Win- dows应用程序下的调用,并通过控件属性来改变贝塞尔曲线的效果。     

ActiveX技术在RFID系统开发中的应用

介绍ActiveX技术在构建RFID系统中的重要作用,对ActiveX控件的设计方法进行详细研究,主要介绍用C#编制ActiveX控件时,有关控件的编写和发布以及在Web中调用的关健技术。     

C#.NET中控件数组的实现

在VB中使用控件数组非常灵活,同样在C#中也可以实现控件数组的功能.从三个方面说明C#如何完成控件数组的功能,即对多个控件赋值,多个控件使用同一个事件处理程序,在运行时动态添加或者删除控件.     

Visual C#创建用户控件

在使用Visual C#开发应用程序的过程中,经常会遇到系统提供的控件不能满足用户需求的情况,这时需要创建用户控件实现具有特殊功能的控件。Visual C#允许用户定义三种类型的用户控件：复合控件、扩展控件和自定义控件,通过实例解析了Visual C#中如何实现这三种类型的控件。     

C#实现对Chart控件的调用显示

在对各类数据进行比较、分析时,图标方式是比较直观,也是比较常用的显示方式,本文简要介绍C#中Chart控件的调用方法,绘制相应格式的图表,构建C#连接、操作Access数据库的方法、实现对DataReader对象类型数据源的绑定、添加操作.     

自助式选择项控件的开发

为了便于程序员在数据库开发中处理选择项的问题,权衡处理选择项方法的利弊,基于Oracle数据库,利用C#开发了一个比较实用的控件。该控件可以定义各种不同类型的选择项,并且将这些选择项存储在数据库的一个表中。程序员在开发过程中只需在引用控件时定义类型,在显示选择项时判断有效标志,并按照调用频率排序即可,避免了不必要的代码改动。     

基于C#控制的NI板卡在振动试验台中的应用

NI板卡可用于车辆振动试验台的数据采集和处理,C#语言可用于定制用户接口界面,在C#下调用NI接口的方法却甚少有人提及,这里介绍了两种在C#平台下控制NI USB-6363板卡,调用接口函数完成数据采集功能的流程,最后给出在C#下完成基本数据采集和故障监测功能的实例,与通过基于LabVIEW的故障监测系统得到的实验数据进行对比,验证了C#数据采集程序的精确性,为C#下实现数据采集提供了创新的思路.     

基于Qt/Embedded的控件扩展研究与实现

嵌入式系统的广泛应用促进了嵌入式Linux图形用户界面(GUI)的发展,Qt/Embedded是一个易扩展且被广泛使用的嵌入式图形系统。为满足特定的界面需求,需对现有图形系统的控件进行扩展研究。分析了嵌入式图形系统Qt/Em-bedded的实现技术,然后对控件扩展方法进行了研究,在此基础上实现了一个具有特殊外观且透明度可调的容器控件,最后阐述了将扩展控件并入Qt/Embedded控件集的方法。提出的控件扩展方法,可以快速地定制出个性化控件,丰富图形界面;扩展控件合并到控件集不仅完善了原有控件功能,还提高了开发效率。     

Widgets Dedicated to User Interface Evaluation

In this article, evaluation-based widgets are proposed as a contribution to assist evaluators for early evaluation of user interfaces. This contribution imbricates the ergonomic quality evaluation process into widgets used for user-interface graphical composition. In other words, these widgets evaluate themselves according to a defined set of ergonomic guidelines. The proposed widgets indicate the possible interface design ergonomic inconsistencies as a notification to the designer. The guidelines set can be modified through an interface dedicated to guidelines definition into XML files. The proposed widgets are intended for the evaluation of different kind of user interfaces: WIMP, web, and mobile. An experimental evaluation, involving these evaluation-based widgets, is proposed to illustrate and to validate the approach.     

基于3D Widgets的三维人机交互平台的设计与实现

随着人机交互技术的不断发展，对三维人机交互的支持在三维图形软件中占有越来越重要的地位，而在医学影像处理与分析领域，它对于更方便、准确地使用可视化的结果辅助医生进行诊断具有重要意义。该文针对医学影像处理与分析领域中三维交互的需求与特点，设计并实现了一个基于3D Widgets的三维人机交互软件平台，包括以3D Widgets为核心的交互框架、各功能模块以及一些实用的Widgets的设计和实现，并给出了一组应用实例。其最终目的是为医学影像处理与分析领域提供一个灵活可靠和可扩展的三维交互平台。     

Scented widgets: improving navigation cues with embedded visualizations

This paper presents scented widgets, graphical user interface controls enhanced with embedded visualizations that facilitate navigation in information spaces. We describe design guidelines for adding visual cues to common user interface widgets such as radio buttons, sliders, and combo boxes and contribute a general software framework for applying scented widgets within applications with minimal modifications to existing source code. We provide a number of example applications and describe a controlled experiment which finds that users exploring unfamiliar data make up to twice as many unique discoveries using widgets imbued with social navigation data. However, these differences equalize as familiarity with the data increases.     

基于C#的主成分分析算法及其与GIS接口*

分析了传统方法开发的组件存在“DLL Hell”问题和传统GIS软件在面对大数据集时效率低的不足,指出使用C#语言开发的组件可以有效地解决这些问题。并以开发主成分分析模块为例,介绍了主成分分析主要计算方法,给出了基于C#的算法,最后给出了基于C#的主成分分析模块实现及其与GIS软件的接口技术。     

基于asp.net平台“日清日结”系统的设计与实现

为有效地控制费用支出,以及对发生的各种费用能够快速、直观、准确地了解,我们以asp.net为平台,以C#作为开发语言,以Oracle8i作为后台数据库,开发B/S结构的集团公司"日清日结"系统,使各相关部门通过IE浏览器,简明、快捷地上报、审核、查询、汇总以及报表形成。     

Widget Identification: A High-Level Approach to Accessibility

The Web 2.0 sees once static pages evolve into hybrid applications, and content that was previously simple, now becoming increasingly complicated due to the many updating components located throughout the page. While beneficial for some users, these components (widgets) are often complex and will lead to confusion and frustration for others, notably those for whom accessibility is already an issue. While users and developers often perceive widgets as complete components (a Slideshow, or an Auto Suggest List), they are in-fact heterogeneous collections of code, and are therefore hard to computationally identify. Identification is critical if we wish to reverse engineer inaccessible widgets or ‘inject’ missing ‘WAI-ARIA’ into ‘RIAs’. In this case, we introduce a technique that analyses the code associated with a Web page to identify widgets using combinations of code constructs which enable uniquely identification. We go on to technically evaluate our approach with the most difficult widgets to distinguish between—Slideshows and Carousels—and then describe two prototype applications for visually impaired and older users by means of example.     

Visibility widgets for unveiling occluded data in 3D terrain visualization

In 3D visualization of terrain, occlusion has detrimental impact on discovering, accessing, and spatially relating embedded data. This can lead to significant loss of information. To address this issue, we introduce visibility widgets: compact auxiliary views that visualize occluded data, their locations, and related properties, and thus support users in revealing hidden information. The widgets comprise different occlusion management strategies for detecting and analyzing invisible data inside as well as outside of the field of view. In addition, each widget is designed complementary and transient to facilitate interactive exploration and navigation while not monopolizing the user’s attention. We demonstrate the application of visibility widgets focusing the visual exploration of weather data in 3D terrain.     

Understanding Interactive Legends: a Comparative Evaluation with Standard Widgets

Interactive information visualization systems rely on widgets to allow users to interact with the data and modify the representation. We define interactive legends as a class of controls combining the visual representation of static legends and interaction mechanisms of widgets. As interactive legends start to appear in popular websites, we categorize their designs for common data types and evaluate their effectiveness compare to standard widgets. Results suggest that 1) interactive legends can lead to faster perception of the mapping between data values and visual encodings and 2) interaction time is affected differently depending on the data type. Additionally, our study indicates superiority both in terms of perception and interaction of ordinal controls over numerical ones. Numerical techniques are mostly used in today's systems. By providing solutions to allowing users to modify ranges interactively, we believe that interactive legends make it possible to increase the use of ordinal techniques for visual exploration.