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Monthly Archives: October 2017
Make a button display the picture beneath it in C#
This example makes a button display copies of the picture on which it sits, making it appear that the button is part of the underlying image. The key to this example is the following SetButtonBackground method. // Make the Button … Continue reading
Validate optional parameters in C#
The example Use named and optional parameters in C# explains how to use named and optional parameters to let the calling code omit any combination of parameters. In many applications, you may not want to allow the user to omit … Continue reading
Use named and optional parameters in C#
Optional parameters is one of the few additions in recent versions of Visual Studio that are really useful. I usually try to post examples in an older version of C# because it’s easier for someone to move an older example … Continue reading
Display system metric values with descriptions in C#
The example Get system metrics in C# shows how to get system metrics, but the the metrics’ terse names make the results hard to understand. This example displays descriptions of the metrics in addition to their values. Some of the … Continue reading
Posted in API, system
Tagged API, border height, border thickness, border width, C#, C# programming, example, example program, GetSystemMetrics, metrics, system, system metrics, SystemMetric, tooltips, Windows Forms programming
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Get system metrics in C#
The GetSystemMetrics API function returns system metrics, values that give dimensions used by the system such as the default size of icons and the thickness of a resizable window’s borders. For example, the highlighted line in the picture on the … Continue reading
Posted in API, system
Tagged API, border height, border thickness, border width, C#, C# programming, example, example program, GetSystemMetrics, metrics, system, SystemMetric, Windows Forms programming
1 Comment
Convert an array of bytes into an integer and back in C#
The BitConverter class provides static methods that let you convert various data types to and from arrays of bytes. (I suppose it might have made more sense to call it the ByteConverter class.) You can use those methods to convert … Continue reading
Posted in classes
Tagged BitConverter, bytes, C#, C# programming, classes, example, example program, GetBytes, ToInt32, Windows Forms programming
2 Comments
Determine whether a year is a leap year in C#
Detecting leap years is basically trivial because the DateTime data type provides an IsLeapYear method to do just this. The example uses the following code to display the leap years between the two entered dates. // List leap years between … Continue reading
Posted in miscellany, variables
Tagged C#, C# programming, dates, DateTime, example, example program, leap year, leap years, miscellany, variables, Windows Forms programming
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Get a hard drive serial number in C#
The example Get a disk volume serial number in C# shows how you can find the serial number for a disk volume such as C:\. If you reformat or repartition the drive, however, the volume serial number may change. This … Continue reading