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The following table shows the keywords for built-in C# types, which are aliases of predefined types in the System namespace.
C# Type |
.NET Framework Type |
|---|---|
System.Boolean |
|
System.Byte |
|
System.SByte |
|
System.Char |
|
System.Decimal |
|
System.Double |
|
System.Single |
|
System.Int32 |
|
System.UInt32 |
|
System.Int64 |
|
System.UInt64 |
|
System.Object |
|
System.Int16 |
|
System.UInt16 |
|
System.String |
Remarks
All of the types in the table, except object and string, are referred to as simple types.
The C# type keywords and their aliases are interchangeable. For example, you can declare an integer variable by using either of the following declarations:
int x = 123;
System.Int32 x = 123;
To display the actual type for any C# type, use the system method GetType(). For example, the following statement displays the system alias that represents the type of myVariable:
Console.WriteLine(myVariable.GetType());
You can also use the typeof operator.
See Also
Reference
Concepts
Other Resources
Default Values Table (C# Reference)