The C# decimal keyword denotes a 128-bit data type. Compared to floating-point types, the decimal type has a greater precision and a smaller range, which makes it suitable for financial and monetary calculations.
Approximate Range: ±1.0 × 10−28 to ±7.9 × 1028
Precision: 28-29 significant digits
.NET Type: System.Decimal
It’s common UI courtesy to show the Wait cursor when performing a long operation that requires the user to wait. Here is how the Wait cursor appears in Windows Vista:
But developers often go about this the wrong way by setting the Cursor.Current property as follows:
Cursor.Current = Cursors.WaitCursor;
Sometimes you may need to display or print an input string that contains binary characters. The following function replaces all binary characters in a string with a blank. You can easily modify this method to remove other undesirable characters (such as high-ASCII) if needed.
Want insight into the design and development of C#? Then check out these blogs by key members of the Microsoft C# development team:
Closing all forms in an application seems like it would be a simple task of using a foreach loop in the Application.OpenForms collection, such as:
foreach (Form form in Application.OpenForms)
{
form.Close();
}
But there are two problems.
It’s easy to read a string one line at a time. Here is a console program that demonstrates how:
It’s fairly easy to convert a C# String to a Stream and vice-versa.
Many .NET developers are baffled by the lack of a “Clear” method in the StringBuilder class. For example, if you are using a StringBuilder in a loop, you may want to clear its contents at the beginning of each loop.
This article explains how to use C# to determine the name, edition, service pack, version and bits of the host operating system.
For example, the results on my PC would be:
Operation System Information
—————————-
Name = Windows Vista
Edition = Home Premium
Service Pack = Service Pack 1
Version = 6.0.6001.65536
Bits = 64
When showing a form that contains a TextBox, it’s common courtesy to focus the TextBox so that the user can begin typing immediately.
To focus a TextBox when a Windows Form first loads, simply set the TabIndex for the TextBox to zero (or the lowest TabIndex for any Control on the Form).
When a Form is displayed, it automatically focuses the Control with the lowest TabIndex. Note that if your TextBox is pre-initialized with some text, then the entire Text will be selected, as shown below:
