Hi All,
In this article, we will perform below tasks & this code base is window forms
1. Find list of files present in a directory & sub directory without calling function(s) recursively i.e. avoid recursive function
2. Calculate no of lines of code available in all files under a directory & sub directory
This code is Window Form code:
1. Open a new windows form application
2. Add following controls to the form1,assign controls NAME & TEXT properties respectively
a. Label à Name: lblPath, Text: Files Path
b. Label à Name: lblFileTypes, Text: File Types
c. Label à Name: lblLinesCount, Text : No of Lines
d. Label à Name: lblFilesCount, Text : No of Files
e. Textbox à Name : txtPath, Text:
f. Button à Name: btnCalculate, Text: Calculate Lines
3. Declare below global variable inside the form1 class
int linesCount = 0;
4. Add below code in btnCalculate click event with inline comments to each code statement
private void btnCalculate_Click(object sender, EventArgs e)
{
/* below code, declares array list object & call GetAllFiles which will take folder path which is to be crawled & this function returns all files in the directory & sub directories */
ArrayList filesList = GetAllFiles(txtPath.Text.ToString());
/* below code, for loop is to read each file from filesList object & sum no of files present in each file */
foreach (string fileName in filesList)
{
/* below code, find all lines present in a files */
string[] lines = File.ReadAllLines(fileName);
/* below code, finds lines count & add it to global linesCount variable*/
linesCount += lines.Length;
}
/* below code, assigns not of lines present in all files to label */
lblLinesCount.Text += Convert.ToString(linesCount.ToString());
/* below code, assigns total files crawled by our code */
lblFilesCount.Text += Convert.ToString(filesList.Count.ToString());
}
5. Now let’s add GetAllFiles function, with inline comments to each code statements
/* below function takes director path to be crawled */
private ArrayList GetAllFiles(string directory)
{
/* below code, declares Arraylist object */
ArrayList totalFilesList = new ArrayList();
/* below code, does a preliminary checks to see if the directory path is not empty, if it is empty simply returns i.e. exit the function execution*/
if (directory == string.Empty)
return totalFilesList;
/* below code, creates search option object to crawl all sub directories in a parent directory. The beauty of this is, by using this we can avoid calling of function recursively to find sub directories */
SearchOption sop = SearchOption.AllDirectories;
/* below code, get all files in a directories & sub directories with the extensions .cs
Directory.GetFiles returns files list & take 3 parameters 1. Root directory path 2. Files to be read with extension .cs 3. SearchOption object */
string[] files = Directory.GetFiles(directory, “*.cs”, sop);
/* below code, add up the filesList to main arraylist object */
totalFilesList.AddRange(files);
/* below code, return arraylist with list of files */
return totalFilesList;
}
6. Now execute & the output
Happy Kooding… Hope this helps!
Surya Prakash 