Conversion of VB(?) code to C#

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Hi,
An ex-worker of our company left the following (VB?) code:

VB

function AuthenticateUser(UserName, Password, Domain)
dim strUser
' assume failure
AuthenticateUser = false
strUser = UserName
strPassword = Password
strQuery = "SELECT cn FROM 'LDAP://" & Domain & "' WHERE objectClass='*' "
set oConn = server.CreateObject("ADODB.Connection")
oConn.Provider = "ADsDSOOBJECT"
oConn.Properties("User ID") = strUser
oConn.Properties("Password") = strPassword
oConn.Properties("Encrypt Password") = true
oConn.open "DS Query", strUser, strPassword
set cmd = server.CreateObject("ADODB.Command")
set cmd.ActiveConnection = oConn
cmd.CommandText = strQuery
on error resume next
set oRS = cmd.Execute
if oRS.bof or oRS.eof then
AuthenticateUser = false
else
AuthenticateUser = true
end if
set oRS = nothing
set oConn = nothing
end function

Due to upgrade functions, this code needs to be converted to C#.
Can anyone help me with that?
Thanks.

Posted 11-Aug-10 9:51am

Dimitri Backaert

Updated 12-Aug-10 2:49am

Toli Cuturicu

v2

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4 solutions

Solution 2

Here's a link that does what you want in VB.NET and C#. Scroll down to about a third of the way down the page and the C# code comes after the VB code. It's also well annotated so you can figure out what's going on.

http://forums.asp.net/t/1250726.aspx[^]

Good luck!

Posted 11-Aug-10 12:46pm

AnnieMacD

Solution 3

Or you can go online and convert it here http://converter.telerik.com/[^]

Posted 12-Aug-10 18:08pm

gaurav_verma_mca

Solution 4

hi
this is very easy to convert the above code in to c#

let's start
<pre> void AuntenticateUser(string username,string password,string Domain)
{
string struser="";
struser=username;
string password= password;
string query ="SELECT cn FROM 'LDAP://" + Domain + "' WHERE objectClass='*' ";
//if your database details is managed in web.config file input that connection string here or
// provide the database connection here on the below code inside the "this area"
System.Data.SqlClient.SqlConnection con = "";
//oConn.Provider = "ADsDSOOBJECT" this line is not required as we already have given connection string and
//provider
System.Data.SqlClient.SqlCommand cmd;
cmd = new System.Data.SqlClient.SqlCommand("",con);
cmd.CommandText=CommandType.StoredProcedure;
cmd.Parameters.Add("User ID",SqlDbType.VarChar).Value = struser;
cmd.Parameters.Add("Password",SqlDbType.VarChar).Value=strPassword;

cmd.Parameters.Add("Encrypt Password",SqlDbType.Bit).Value=true;
cmd.CommandText=query;
con.Open();
System.Data.SqlClient.SqlDataReader dr = cmd.ExecuteNonQuery();

if(dr.Read())
{
AuntenticateUser = true;
}
else
{
AuntenticateUser=false;

}
dr.Close();
con.Close();

}
</pre>
please post your comments to [Email address removed]

Posted 12-Aug-10 19:55pm

syamrulezzz

Updated 12-Aug-10 20:39pm

v2

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Goutam Patra 13-Aug-10 2:39am

Never post your email address to aviod spam

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AspDotNetDev · Accepted Answer · 2010-08-11T10:33:00

Solution 1

Compile it as a DLL, then use Reflector to disassemble it into C#.

EDIT: Oh, this looks like VB6. In that case, the Reflector idea will not work. Look into System.Data.SqlClient.

Posted 11-Aug-10 10:33am

AspDotNetDev

Updated 11-Aug-10 10:35am

v2

Comments

Dimitri Backaert 11-Aug-10 16:39pm

Hi aspdotnetdev,

thanks for the reply.
I don't have VB6.0 on my PC, so I can't really compile it.

VB.NET throws a lot of 'errors' on this function.

Any other way to do this?

AspDotNetDev 11-Aug-10 16:53pm

See my update... I didn't realize at first that you were using VB6. The way to do this is to know VB6 and C# and convert manually. I already gave you a hint... you're code is executing an SQL command, so you'll need SqlClient. Specifically, you'll need SqlConnection and SqlCommand.