PadLeft Method (Int32)
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String.PadLeft Method (Int32)


Returns a new string that right-aligns the characters in this instance by padding them with spaces on the left, for a specified total length.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

public string PadLeft(
	int totalWidth


Type: System.Int32

The number of characters in the resulting string, equal to the number of original characters plus any additional padding characters.

Return Value

Type: System.String

A new string that is equivalent to this instance, but right-aligned and padded on the left with as many spaces as needed to create a length of totalWidth. However, if totalWidth is less than the length of this instance, the method returns a reference to the existing instance. If totalWidth is equal to the length of this instance, the method returns a new string that is identical to this instance.

Exception Condition

totalWidth is less than zero.

A Unicode space is defined as hexadecimal 0x0020.

The PadLeft(Int32) method pads the beginning of the returned string. This means that, when used with right-to-left languages, it pads the right portion of the string.


If the PadLeftmethod pads the current instance with whitespace characters, this method does not modify the value of the current instance. Instead, it returns a new string that is padded with leading white space so that its total length is totalWidth characters.

The following example demonstrates the PadLeft method.

string str = "BBQ and Slaw";
Console.WriteLine(str.PadLeft(15));  // Displays "   BBQ and Slaw".
Console.WriteLine(str.PadLeft(5));   // Displays "BBQ and Slaw".

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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