Active Application Watcher in .NET Using Windows Forms

Next copy this entire code of user-defined methods:

private void showdetailsinIE()

{

//To create XSL file,if it is not existing....

if(!File.Exists(@"c:\appl_xsl.xsl"))

{

File.Create(@"c:\appl_xsl.xsl").Close();

string xslcontents ="<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?><xsl:stylesheet version=\"1.0\"

xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\"><xsl:template match=\"/\"> <html> <body>

<h2>My Applications Details</h2> <table border=\"1\"> <tr bgcolor=\"#9acd32\"> <th>Window

Title</th> <th>Process Name</th> <th>Total Time</th> </tr> <xsl:for-each

select=\"ApplDetails/Application_Info\"><xsl:sort select=\"ApplicationName\"/>

<tr> <td><xsl:value-of select=\"ProcessName\"/></td> <td><xsl:value-of

select=\"ApplicationName\"/></td>

<td><xsl:value-of select=\"TotalSeconds\"/></td> </tr> </xsl:for-each> </table> </body>

</html></xsl:template></xsl:stylesheet>";

StreamWriter xslwriter = new StreamWriter(@"c:\appl_xsl.xsl");

xslwriter.Write(xslcontents);

xslwriter.Flush();

xslwriter.Close();

}

//TO show the contents of xml file in IE with a proper xsl....

System.Diagnostics.Process ie = new Process();

System.Diagnostics.ProcessStartInfo ieinfo = new ProcessStartInfo(@"C:\Program Files\Internet

Explorer\iexplore.exe",@"c:\appldetails.xml");

ie.StartInfo = ieinfo;

bool started = ie.Start();

Application.Exit();

}

This method is used to create a xsl file for showing xml log contents in browser and to open browser process for showing xml contents in it.

private void TestFocusedChanged()

{

//This is used to handle hashtable,if its length is 1.It means number of active applications is only one....

try

{

if(applhash.Count == 1)

{

IDictionaryEnumerator en = applhash.GetEnumerator();

applfocusinterval = DateTime.Now.Subtract(applfocustime);

while (en.MoveNext())

{

if(en.Key.ToString() == appltitle+"$$$!!!"+appName)

{

applhash.Remove(appltitle+"$$$!!!"+appName);

applhash.Add(appltitle+"$$$!!!"+appName,applfocusinterval.TotalSeconds);

break;

}

}

}

}
catch(Exception ex)

{

MessageBox.Show(ex.Message);

}

}

This method is used to handle the situation where active application exists is only one.

private void BindGrid()

{

//This is used to bind grid with update contents of xml file....

SaveandShowDetails();

DataSet ds = new DataSet();

ds.ReadXml(@"c:\appldetails.xml");

dataGrid1.DataSource = ds;

}

This method is used to show xml contents in the grid.

private void SaveandShowDetails()

{

//This is used to save contents of hashtable in a xml file....

try

{

TestFocusedChanged();

System.IO.StreamWriter writer = new System.IO.StreamWriter(@"c:\appldetails.xml",false);

IDictionaryEnumerator en = applhash.GetEnumerator();

writer.Write("<?xml version=\"1.0\"?>");

writer.WriteLine("");

writer.Write("<?xml-stylesheet type=\"text/xsl\" href=\"appl_xsl.xsl\"?>");

writer.WriteLine("");

writer.Write("<ApplDetails>");

while (en.MoveNext())

{

if(!en.Value.ToString().Trim().StartsWith("0"))

{

writer.Write("<Application_Info>");

writer.Write("<ProcessName>");

string processname = "<![CDATA["+en.Key.ToString().Trim().Substring(0,en.Key.ToString().Trim

().LastIndexOf ("$$$!!!")).Trim()+"]]>";

processname = processname.Replace("\0","");

writer.Write(processname);

writer.Write("</ProcessName>");

writer.Write("<ApplicationName>");

string applname = "<![CDATA["+en.Key.ToString().Trim().Substring(en.Key.ToString().Trim

().LastIndexOf("$$$!!!") + 6).Trim()+"]]>";

writer.Write(applname);

writer.Write("</ApplicationName>");

writer.Write("<TotalSeconds>");

if((Convert.ToDouble(en.Value)/60) < 1)

{

writer.Write(Convert.ToInt32((Convert.ToDouble(en.Value)))+" Seconds");

}

else

{

writer.Write(Convert.ToInt32((Convert.ToDouble(en.Value))/60)+" Minutes");

}

writer.Write("</TotalSeconds>");

writer.Write("</Application_Info>");

}

}

writer.Write("</ApplDetails>");

writer.Flush();

writer.Close();

}

catch(Exception ex)

{

MessageBox.Show(ex.Message);

}

}

This method is used to save all the contents of hashtable in appldetails file.

Finally, in order the access members of user32.dll for getting active window title and its process name, I created a separate file as APIFuncs.cs with following code shown below:

#region Windows API Functions Declarations

//This Function is used to get Active Window Title...

[System.Runtime.InteropServices.DllImport("user32.dll",CharSet=System.Runtime.InteropServices.CharSet.Auto)]

public static extern int GetWindowText(IntPtr hwnd,string lpString, int cch);

//This Function is used to get Handle for Active Window...

[System.Runtime.InteropServices.DllImport("user32.dll", CharSet=System.Runtime.InteropServices.CharSet.Auto)]

private static extern IntPtr GetForegroundWindow();

//This Function is used to get Active process ID...

[System.Runtime.InteropServices.DllImport("user32.dll", CharSet=System.Runtime.InteropServices.CharSet.Auto)]

private static extern Int32 GetWindowThreadProcessId(IntPtr hWnd,out Int32 lpdwProcessId);

#endregion

#region User-defined Functions

public static Int32 GetWindowProcessID(IntPtr hwnd)

{

//This Function is used to get Active process ID...

Int32 pid;

GetWindowThreadProcessId(hwnd, out pid);

return pid;

}

public static IntPtr getforegroundWindow()

{

//This method is used to get Handle for Active Window using GetForegroundWindow() method present in

user32.dll

return GetForegroundWindow();

}

public static string ActiveApplTitle()

{

//This method is used to get active application's title using GetWindowText() method present in user32.dll

IntPtr hwnd =getforegroundWindow();

if (hwnd.Equals(IntPtr.Zero)) return "";

string lpText = new string((char) 0, 100);

int intLength = GetWindowText(hwnd, lpText, lpText.Length);

if ((intLength <= 0) || (intLength > lpText.Length)) return "unknown";

return lpText.Trim();

}

#endregion

The Final output will be like this as shown below:

The xml file will be like this as shown below:

I am attaching the code for reference.I hope this code will be useful for all...