{"id":2561,"date":"2023-07-03T11:22:22","date_gmt":"2023-07-03T04:22:22","guid":{"rendered":"https:\/\/csharptutorial.net\/?page_id=2561"},"modified":"2023-07-03T11:23:13","modified_gmt":"2023-07-03T04:23:13","slug":"csharp-string-padleft","status":"publish","type":"page","link":"https:\/\/www.csharptutorial.net\/csharp-string-methods\/csharp-string-padleft\/","title":{"rendered":"C# String PadLeft"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you will learn how to use the C# String PadLeft()<\/code> to pad a specified character on the left side of a string to achieve a desired length.<\/p>\n\n\n\n

Introduction to the C# String PadLeft method<\/h2>\n\n\n\n

The String<\/a> PadLeft()<\/code> method pads a space or a specified character on the left side of the current string to achieve a desired length.<\/p>\n\n\n\n

In practice, the PadLeft()<\/code> method is useful for aligning strings or adding leading zeros to strings.<\/p>\n\n\n\n

The following PadLeft()<\/code> method pads the current string with spaces on the left for a specified total length:<\/p>\n\n\n

public<\/span> string<\/span> PadLeft<\/span> (\n   int<\/span> totalWidth\n<\/span>)<\/span>;<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
In this syntax, the totalWith<\/code> is the desired length of the resulting string that includes the original string and additional padding spaces.<\/p>\n\n\n\n
For example, the following program uses the PadLeft()<\/code> method to pad a message with three spaces on the left:<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nvar<\/span> message = \"C# String PadLeft()\"<\/span>;\nvar<\/span> result = message.PadLeft(message.Length + 3<\/span>);\nWriteLine(result);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
   C# String PadLeft()<\/code><\/span>Code language:<\/span> plaintext<\/span> (<\/span>plaintext<\/span>)<\/span><\/small><\/pre>\n\n\n
The PadLeft()<\/code> method has an overload that allows you to pad a string with a specified character on the left to get the resulting string with a specified length:<\/p>\n\n\n
public<\/span> string<\/span> PadLeft<\/span> (\n    int<\/span> totalWidth, \n    char<\/span> paddingChar\n<\/span>)<\/span>;<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
In this syntax, the paddingChar<\/code> is the character for padding. <\/p>\n\n\n\n
For example, the following program uses the PadLeft()<\/code> method to add leading zeros to a string so that the resulting string has a length of 6<\/code>:<\/p>\n\n\n
using<\/span> static<\/span> System.Console;\n\nvar<\/span> invoiceNumber = 1234<\/span>;\nvar<\/span> result = invoiceNumber.ToString().PadLeft(6<\/span>, '0'<\/span>);\nWriteLine(result);<\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
001234<\/span><\/code><\/span>Code language:<\/span> C#<\/span> (<\/span>cs<\/span>)<\/span><\/small><\/pre>\n\n\n
Summary<\/h2>\n\n\n\n
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  • Use the C# String PadLeft()<\/code> method to pad a string with a specified character on the left to a desired length.<\/li>\n<\/ul>\n
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