This application is going to display folder contents and also compares contents of two folders. I am using web application to display folder contents. By using this application, we can compare two folders easily. This application will display files not common to both folders.
First create a web application in c#, name it as Folderviewer. Next import System.IO namespace. Next create UI as shown below. Here I used 4 listboxes, 2 textboxes, 1 button and some labels:
![folder1.gif]()
Next Button_click event and copy this code:
try
{
//To Load files into ListBox1
ListBox1.Items.Clear();
string path=TextBox3.Text ;
foreach(string f in Directory.GetFiles(path))
{
string filename=f.Substring(f.LastIndexOf(@"\")+1);
string fn_withoutextn=filename.Substring(0,filename.IndexOf(@"."));
ListBox1.Items.Add(fn_withoutextn.ToString());
}
ListBox2.Items.Clear();
//To Load files into ListBox2
fillsecond();
//To show files that are present in ListBox1 but not in ListBox2
showdiffA();
//To show files that are present in ListBox2 but not in ListBox1
showdiffB();
Label5.Text=string.Empty;
}
catch(System.Exception ex)
{
Label5.Text=(ex.Message).ToString();
}
Definition for method fillsecond is:
private void fillsecond()
{
foreach(string f in Directory.GetFiles(TextBox4.Text))
{
string filename=f.Substring(f.LastIndexOf(@"\")+1);
string fn_withoutextn=filename.Substring(0,filename.IndexOf(@"."));
ListBox2.Items.Add(fn_withoutextn.ToString());
}
}
Definition for method showdiffA is:
private void showdiffA()
{
ListBox3.Items.Clear();
foreach(string f in Directory.GetFiles(TextBox3.Text))
{
if(!File.Exists(TextBox4.Text+f.Substring(f.LastIndexOf(@"\")+1)))
{
string filename=f.Substring(f.LastIndexOf(@"\")+1);
string fn_withoutextn=filename.Substring(0,filename.IndexOf(@"."));
ListBox3.Items.Add(fn_withoutextn);
}
}
Label3.Text="Files not present in " + TextBox4.Text;
}
Definition for method showdiffB is:
private void showdiffB()
{
ListBox4.Items.Clear();
foreach(string f in Directory.GetFiles(TextBox4.Text))
{
if(!File.Exists(TextBox3.Text+f.Substring(f.LastIndexOf(@"\")+1)))
{
string filename=f.Substring(f.LastIndexOf(@"\")+1);
string fn_withoutextn=filename.Substring(0,filename.IndexOf(@"."));
ListBox4.Items.Add(fn_withoutextn);
}
}
Label4.Text="Files not present in " + TextBox3.Text;
}
Run the application, specify folder path in each TextBox, and click Show button.
It will display files not common to both folders as shown below:
![folder2.gif]()