Type conversion is converting one type of data to another type. It is also known as Type Casting. In C#, type casting has two forms −
Implicit type conversion − These conversions are performed by C# in a type-safe manner. For example, are conversions from smaller to larger integral types and conversions from derived classes to base classes.
Explicit type conversion − These conversions are done explicitly by users using the pre-defined functions. Explicit conversions require a cast operator.
C# Type Conversion Methods :
| Sr.No. | Methods & Description |
|---|---|
| 1 |
ToBoolean
Converts a type to a Boolean value, where possible.
|
| 2 |
ToByte
Converts a type to a byte.
|
| 3 |
ToChar
Converts a type to a single Unicode character, where possible.
|
| 4 |
ToDateTime
Converts a type (integer or string type) to date-time structures.
|
| 5 |
ToDecimal
Converts a floating point or integer type to a decimal type.
|
| 6 |
ToDouble
Converts a type to a double type.
|
| 7 |
ToInt16
Converts a type to a 16-bit integer.
|
| 8 |
ToInt32
Converts a type to a 32-bit integer.
|
| 9 |
ToInt64
Converts a type to a 64-bit integer.
|
| 10 |
ToSbyte
Converts a type to a signed byte type.
|
| 11 |
ToSingle
Converts a type to a small floating point number.
|
| 12 |
ToString
Converts a type to a string.
|
| 13 |
ToType
Converts a type to a specified type.
|
| 14 |
ToUInt16
Converts a type to an unsigned int type.
|
| 15 |
ToUInt32
Converts a type to an unsigned long type.
|
| 16 |
ToUInt64
Converts a type to an unsigned big integer.
|
Type Casting
The meaning of Type Casting is to change one data type into another data type. Developers change data type according to their need.
Types of casting in C#
1. Implicit Conversion
2. Explicit Conversion
Implicit Conversion
Implicit Conversion is done by the compiler itself.
private void ImplicitClick_Click(object sender, EventArgs e)
{
int firstValue = 25;
int secondValue = 26;
long result = firstValue + secondValue;
//MessageBox.Show(result.ToString());
}
Explicit Conversion
Explicit Conversion is done by the users according to their need/requirement. We tell the compiler to do the conversion.
private void btnCast_Click(object sender, EventArgs e)
{
int firstName = int.Parse(txtFirstNumber.Text);
int secondName = int.Parse(txtSecondNumber.Text);
MessageBox.Show((firstName + secondName).ToString());
}
