How to know dotnet framework is present or not?????

[manjusaharan]

HI all,

Can anyone tell me the method of detecting the presence of dotnet framework 2.0

Thanks in advance .

Manju Saharan

[majestic0110]

Hi there, I found this article which will answer your question.

http://support.microsoft.com/kb/318785

The upshot is that the easiest way to determine which versions of the .NET Framework you have installed on a computer is to locate the \Microsoft.NET\Framework folder in the drive you installed it on. Please mark your thread as solved if you are happy with this answer.
Hope this helps!

[Jx_Man]

This following code to detect .net version, Hope it help u :

using System.IO;


public string GetNetVersion()
{
    string functionReturnValue = null;
    
    ///'''''''''''''''''''''''''''''''''''''''''''''''''
    
    //   PURPORSE : Get the highest .NET framework version from the directy name
    
    //              support.microsoft.com/kb/318785/en-us
    
    //
    
    //              Assumes microsoft will continue naming convention
    
    //              %systemroot%\Microsoft.NET\Framework\vN.N.NXXXX
    
    //
    
    //   SECURITY : Authenticated Users (Win2000)
    
    //
    
    //    RETURNS : Numeric portion of direcory name as a [String]
    
    ///'''''''''''''''''''''''''''''''''''''''''''''''''
    
    string SystemDirectory = Environment.GetEnvironmentVariable("SystemRoot");
    
    string strWorkingDir = SystemDirectory + "\\Microsoft.NET\\Framework\\";
    
    Directory NetFramework;
    
    string[] strProcessDirs;
    
    string strVersion;
    
    double intNetMajor;
    
    double intVal;
    
    int i;
    
    int j = Strings.Len(strWorkingDir) + 1;
    
    if (System.IO.Directory.Exists(strWorkingDir) == true) {
        
         // ERROR: Not supported in C#: ReDimStatement

        
        // get the subdirectories that match the filter
        
        NetFramework.GetDirectories(strWorkingDir, "v?.*").CopyTo(strProcessDirs, (0));
        
        //
        
        for (i = 0; i <= strProcessDirs.GetUpperBound(0); i++) {
            
            if (strProcessDirs(i) != "") {
                
                // strip the path and the 'v' from the directory name
                
                strVersion = Microsoft.VisualBasic.Right(strProcessDirs(i), Strings.Len(strProcessDirs(i)) - j);
                
                // get the left three chars as a decimal
                
                intVal = (double)Microsoft.VisualBasic.Left(strVersion, 3);
                
                //resolve the highest version number
                
                if (intVal > intNetMajor) {
                    
                    intNetMajor = intVal;
                    
                    // return the higer version as string
                    
                    functionReturnValue = strVersion;
                    
                }
                
            }
            
        }
        
    }
    return functionReturnValue;
    
}
private void Form2_Load(object sender, System.EventArgs e)
{
    Label1.Text = GetNetVersion();
}

[majestic0110]

Oh I didn't realise the OP meant in code! lol, oops! my mistake!

[Jx_Man]

Oh I didn't realise the OP meant in code! lol, oops! my mistake!

Actually he want code to detect .net framework present or not but i didn't know it. but it your link posted (msdn) has a link to some site that it give a code to detect .net framework but not in C#

[majestic0110]

Oh I see, Ok Jx_man I see what you mean there :)