C# Sharp File Handling : Exercises, Practice, Solution
C# Sharp File Handling [15 exercises with solution]
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1. Write a program in C# Sharp to create a blank file on the disk.
Expected Output :
A file created with name mytest.txt
2. Write a program in C# Sharp to remove a file from the disk.
Expected Output :
Remove a file from the disk (at first create the file ) : -------------------------------------------------------------- The file mytest.txt deleted successfully. Remove a file from the disk (at first create the file ) : -------------------------------------------------------------- File does not exist
3. Write a C# Sharp program to create a blank file on the disk if the same file already exists.
Expected Output :
A file created with name mytest.txt
4. Write a program in C# Sharp to create a file and add some text.
Expected Output:
A file created with content name mytest.txt
5. Write a C# Sharp program to create a text file and read it.
Expected Output :
Here is the content of the file mytest.txt : Hello and Welcome It is the first content of the text file mytest.txt
6. Write a program in C# Sharp to create a file and write an array of strings to the file.
Test Data :
Input number of lines to write in the file :2
Input 2 strings below :
Input line 1 : this is 1st line
Input line 2 : this is 2nd line
Expected Output :
The content of the file is : ---------------------------------- this is 1st line this is 2nd line
7. Write a C# Sharp program to create and write some lines of text into a file. This does not contain a given string on a line.
Test Data :
Input the string to ignore the line : fox
Input number of lines to write in the file : 2
Input 2 strings below :
Input line 1 : the quick brown fox jumps
Input line 2 : over the lazy dog.
Expected Output :
The line have ignored which contain the string 'fox'. The content of the file is : ---------------------------------- over the lazy dog.
8. Write a program in C# Sharp to append some text to an existing file.
Expected Output :
Here is the content of the file mytest.txt : Hello and Welcome It is the first content of the text file mytest.txt Here is the content of the file after appending the text : Hello and Welcome It is the first content of the text file mytest.txt This is the line appended at last line.
9. Write a program in C# Sharp to create and copy the file to another name and display the content.
Expected Output :
Here is the content of the file mytest.txt : Hello and Welcome It is the first content of the text file mytest.txt The file mytest.txt successfully copied to the name mynewtest.txt in the same directory. Here is the content of the file mynewtest.txt : Hello and Welcome It is the first content of the text file mytest.txt
10. Write a C# Sharp program to create a file and move it into the same directory with another name.
Expected Output:
Here is the content of the file mytest.txt : Hello and Welcome It is the first content of the text file mytest.txt The file mytest.txt successfully moved to the name mynewtest.txt in the same directory. Here is the content of the file mynewtest.txt : Hello and Welcome It is the first content of the text file mytest.txt
11. Write a C# Sharp program to read the first line of a file.
Expected Output:
Here is the content of the file mytest.txt : test line 1 test line 2 Test line 3 The content of the first line of the file is : test line 1
12. Write a program in C# Sharp to create and read the last line of a file.
Test Data
Input number of lines to write in the file :3
Input 3 strings below :
Input line 1 : line1
Input line 2 : line2
Input line 3 : line3
Expected Output:
The content of the last line of the file mytest.txt is : line3
13. Write a program in C# Sharp to read a specific line from a file.
Test Data and Expected Output :
Input number of lines to write in the file :3 Input 3 strings below: Input line 1 : line1 Input line 2 : line2 Input line 3 : line3 Input which line you want to display :3 The content of the line 3 of the file mytest.txt is : line3
14. Write a C# Sharp program to create and read the last n lines of a file.
Test Data and Expected Output :
Input number of lines to write in the file :5 Input 5 strings below : Input line 1 : line1 Input line 2 : line2 Input line 3 : line3 Input line 4 : line4 Input line 5 : line5 Input last how many numbers of lines you want to display :3 The content of the last 3 lines of the file mytest.txt is : The last no 3 line is : line3 The last no 2 line is : line4 The last no 1 line is : line5
15. Write a program in C# Sharp to count the number of lines in a file.
Expected Output:
Here is the content of the file mytest.txt : test line 1 test line 2 Test line 3 test line 4 test line 5 Test line 6 The number of lines in the file mytest.txt is : 6
C# Sharp Code Editor
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