Use. INI file to create "Dynamic Help" for the input interface

Create | Dynamic in C # programming, in some cases we might be able to use it. INI file. For example, create "Dynamic Help" for an input interface:

We set a label below the input interface, and when the user moves the cursor to each textbox or other input, the label text is automatically transformed into some help information for the entry when you select the box.

INI file is a text file, consisting of several sections (section), under each parenthesized heading, a number of key words (key) and their corresponding values (value)

[Section]

Key=value


Our INI file is relatively simple, the file name is: Helpinfo.ini.
－－－－－－－－－－－－－－－－－
[Promptinfo]
Yourtextbox = Please enter xxxxx information.

－－－－－－－－－－－－－－－－－

First we need to invoke the Kernel32.dll with the following statement

[DllImport ("kernel32")]
private static extern int getprivateprofilestring (string section, String key, String Def, StringBuilder retVal, int size, String filePath);


Then write a callback method for the Enter event for the input entry (such as a TextBox)

This. Yourtextbox.enter + = new System.EventHandler (this.conenter);
private void Conenter (Object sender, System.EventArgs e)
{
String strpromptfile = Directory.GetCurrentDirectory () + "\\HelpInfo.ini";//Get the path where the INI file resides

String strclsname = sender. GetType (). ToString (). ToUpper ();
if (Strclsname.endswith ("TEXTBOX"))
{
if (sender. Equals (Yourtextbox))
{
GetPrivateProfileString ("Promptinfo", "Yourtextbox", "", Strpromptcontent,
1024, strpromptfile);
}
Txthelpcontent.text = Strpromptcontent.tostring ();//txthelpcontent is the label that displays the Help information
}