Searching for Text in .NET

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Searching for Text
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Much of the power of electronic text editing lies in its ability to search for a particular character pattern in a text file Furthermore, once found, it's a logical extension of the search concept to replace the found text string with a different text string For example, if you decide to change the name of a variable to avoid conflict with another identifier in a program, you might wish to have the text editor locate every instance of the old variable name in a program and replace each one with the new variable name NASM-IDE's editor can do both search and search/replace operations with great ease-and such easy searching makes page numbering unnecessary If you wish to work on the part of a program that contains a particular procedure, all you need do is search for that procedure's name and you will move the cursor right to the spot you want: Ctrl-Q/F will find a given text string The Find command can also be issued from the menu bar by selecting the Search|Find menu item
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When you issue the Find command (either from the keyboard or from the menu; it doesn't matter), NASM-IDE brings up a dialog box to find out what you want to find and how you want to configure the search This dialog is shown in Figure 57
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Figure 57: The Find dialog box The text that you're searching for goes in the Text to find edit field in the dialog box You then tab down to the two options fields These are check boxes, and they both default to blank The first specifies a case-sensitive search If you check it, the text found must match the text you enter in Text to find both in characters and in case The second check box specifies that the search must be for Whole words only This allows you to avoid finding strings inside of larger strings For example: Suppose you're looking for the register name "AX" In the middle of your assembly file, you have a comment that reads like this: ; Axe the dead space at the end of the string If you don't check Whole words only, your search for "AX" will also find "Axe" because "ax" is inside "axe" You could also discriminate between the two by case, but that's less reliable, especially when you're searching source code files written by other people who may have entirely different habits in using character case (Or who aren't consistent in how they use it-that's even worse) If Whole words only is checked, a search for "AX" will not find "Axe," or "Tax," or "maximum," or anything else that isn't simply"AX" Once you have the Find dialog box filled in the way you want it, press the OK button The search will commence, and if the search is successful the cursor will move to the first character of the first instance of the found text string If the editor cannot find any instance of the requested text string in the work file, it displays an error message box containing the message "Search string not found" You must then click on the OK button to continue editing
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Searching for Additional Instances
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Most assembly language source code files will have multiple instances of common identifiers like "AX" If you want to find not the first one but the third or fourth (or one further down that you know you can identify from its context), you need to search for additional instances of the text NASM-IDE has a command for this as well: Search again This command may be issued from the menu bar, by selecting menu item Search|Search again The shortcut for Search again is Ctrl-L, which is very handy (Sometimes using the mouse is more hand motion than it needs to be) Ctrl-L will find (or replace) the next instance of a given text string
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