Monthly Archives: March 2017

Parse file sizes in KB, MB, GB, and so forth in C#

Posted on March 31, 2017 by Rod Stephens

The example Format file sizes in KB, MB, GB, and so forth in C# shows how to convert a number into a string formatted in KB, MB, etc. This example does the opposite: it parses a value such as “1.23 … Continue reading →

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Highlight the DataGridView row that is under the mouse in C#

Posted on March 30, 2017 by Rod Stephens

Someone recently asked me how to change the style of the row under the mouse in a DataGridView control. This example does that. When the program starts, the following code prepares the DataGridView for use. // The style to use … Continue reading →

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Use accelerators on labels and buttons in C#

Posted on March 29, 2017 by Rod Stephens

To place an accelerator on a menu item, you put an ampersand in front of the letter in the menu item’s caption that you want to be the accelerator. At run time, the caption is displayed with the accelerator letter … Continue reading →

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Compare the performance of incrementing statements in C#

Posted on March 28, 2017 by Rod Stephens

This is another performance testing post. Assembly language usually has statements comparable to x++, x–, x +=, and other operators that add or subtract to a value and store the result in the same value, so it makes some sense … Continue reading →

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Make a simple event logger in C#

Posted on March 27, 2017 by Rod Stephens

Usually the debugger lets you examine how a program works quite effectively, but sometimes it’s useful to use an event logger to record events for later study. For example, when you’re working with mouse events, stopping execution at a break … Continue reading →

Posted in classes, debugging, files | Tagged , , , , , , , , , , | 3 Comments

Display a form’s control hierarchy in C#

Posted on March 25, 2017 by RodStephens

This example displays the control hierarchy for a form. It’s actually relatively simple. Some controls can contain other controls. For example, a form is a control and it contains all of a Windows Forms application’s controls. Similarly Panel, TableLayoutPanel, SplitContainer, … Continue reading →

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Loop over a form’s controls in C#

Posted on March 23, 2017 by RodStephens

This example shows how to loop over controls of various types on a form. The Control class defines a Controls property that is a collection containing references to the controls inside a control. For example, a form’s Controls collection holds … Continue reading →

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Make a shaded ellipse control in C#

Posted on March 22, 2017 by Rod Stephens

Note: Before you can use the ShadedEllipse control in the example program, you must build the solution. After you download the example, build it before you try to view the form. This example walks through building a control that draws … Continue reading →

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Quickly insert standard menu items on a form in C#

Posted on March 21, 2017 by Rod Stephens

Many applications need standard File, Edit, Tools, and Help menus. Visual Studio provides a simple way to build standard menu items. You can then edit the menu to add new items and remove items that you don’t need. Visual Studio … Continue reading →

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Give a class default indexer properties in C#

Posted on March 20, 2017 by Rod Stephens

An indexer property is a property that other code can use inside square brackets to access some value provided by the class, much as you can use the index of an array. Unlike an array, a class’s indexer need not … Continue reading →

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