Open help file in c#

Xml; Step 3: Design the help form. My project has three forms. Clear ; tvHelp. Add "Application Help" ; tvHelp. Add "Introduction" ; tvHelp. Add "Methods" ; tvHelp. Add "Properties" ; tvHelp. SelectSingleNode "title". InnerText; tvHelp. Show ex. InnerText; txtHelp. We need three events to display the help when the tvHelp node is clicked, when btnDisplay is clicked or when any item of the cmbHeading ComboBox is clicked.

If you don't like the code of frmHelp1 form and MyHelp1. Stream Example The following example demonstrates some of the FileStream constructors.

IO; using System. ToChar i. Read b,0,b. WriteLine temp. GetBytes value ; fs. Write info, 0, info. The file path needs to be changed to a file that exists on the computer in this method. Text; using System. Tasks; using System. Windows; using System.

Controls; using System. GetBytes UserInput. Open filename, FileMode. Seek 0, SeekOrigin. End ; await SourceStream. WriteAsync result, 0, result.

The File Stream uses the asynchronous method to perform resource-intensive file operations without blocking the main thread. This performance consideration is particularly important in a Windows 8. FileStream buffers input and output for better performance.

Note This method uses the Disk files which always support random access. At the time of construction, the CanSeek property value is set to true or false depending on the underlying file type. Otherwise, the CanSeek property value is false. This type of method Implement the IDisposable interface. When you have finished using the type, you should dispose of it either directly or indirectly. To dispose of it indirectly, use a language construct such as using in C or Using in Visual Basic.

The IsAsync property detects whether the filehandle was opened asynchronously. You specify this value when you create an instance of the FileStream class using a constructor that has an isAsync, useAsync, or options parameter. The Seek method supports random access to files. This is done with byte offset reference point parameters.

The byte offset is relative to the seek reference point, which can be the beginning, the current position, or the end of the underlying file, as represented by the three members of the SeekOrigin enumeration in this method.

If a process terminates with part of a file locked or closes a file that has outstanding locks, the behavior is undefined. For directory operations and other file operations, see the File, Directory, and Path classes. I need to open a file and display it by providing the file path.

I tried with the below code. Hi, There is nothing wrong with your code. Please check below things: 1. Make sure that that the file path is correct and file is located in appropriate location otherwise you get exception file not found. File doesn't open by another thread otherwise you get exception access is denied. Use exception handling to find exact issue. Write code in try block and check exception in catch block. Try your file open from another location there might be permission issue in C directory.

WriteLine strLine ;.