Retrieves the line number from the specified character position within the text of the control.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
This method enables you to determine the line number based on the character index specified in the index parameter of the method. The first line of text in the control returns the value zero. The method returns the physical line number where the indexed character is located within the control. For example, if a portion of the first logical line of text in the control wraps to the next line, the method returns 1 if the character at the specified character index has wrapped to the second physical line. If WordWrap is set to false, no portion of the line wraps to the next, and the method returns 0 for the specified character index. You can use this method to determine which line a specific character index is located within. For example, after calling the Find method to search for text, you can obtain the character index to where the search results are found. You can call this method with the character index returned by the Find method to determine which line the word was found.
If the character index specified in the index parameter is beyond the available number of lines contained within the control, the last line number is returned.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.