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16 Cards in this Set
- Front
- Back
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output file |
files to which an application writes data |
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input file |
files that are read by the computer |
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sequential access file |
used for selecting, inserting, deleting and updating data in a database |
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text files |
another name for sequential file |
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stream of characters |
programmers refer sequence of characters to |
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stream writer object |
used to write a stream of characters to a sequential access file |
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create text method |
used with a StreamWriter variable to open a sequential access file for output -when a file is open for output, the computer creates a new, empty file to which data can be written -if the file already exists, the computer erases content of the file before writing any data to it |
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appendtext method |
used with a StreamWriter variable to open a sequential access file for append |
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write method |
used with a StreamWriter variable to write data to a sequential access file; differs from the WriteLine method in that it does not write a newline character after the data |
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writeline method |
used with a StreamWriter variable to write data to a sequential access file; differs from the Write method in that it writes a newline character after the data |
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close method |
closes an output sequential access file |
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open text method |
used after declaring a stream reader variable, its used to open a sequential file for input, which automatically creates a stream Reader object -if computer finds the file, it opens the file for input -if computer does not find the file, a run time error occurs |
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exists method |
returns the boolean value true if the file exists otherwise it returns false |
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peek method |
used with a StreamReader variable to determine whether a file containsanother character to read -if found, it will return the character otherwise it returns a "-1" |
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line |
a sequence (stream) of characters followed by the newline character |
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read line method |
used with a StreamReader variable to read a line of text from a sequential access file and it returns a string that contains only the sequence of characters in the current line |
