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Question: How to get the environment information in VB.NET?

Answer: The System.Environment namespace includes the functionality to get the environment information such as the UserName and OS Version.


File name is SystemInfo.vb
Imports System
Class SystemInfo
Shared Sub main()
Console.WriteLine("")
Console.WriteLine("Current User")
Console.WriteLine(Environment.UserName)
Console.WriteLine("")
Console.WriteLine("Name of the Machine")
Console.WriteLine(Environment.MachineName)
Console.WriteLine("")
Console.WriteLine("OS version")
Console.WriteLine(Environment.OSVersion)
Console.WriteLine("")
Console.WriteLine("System Directory")
Console.WriteLine(Environment.SystemDirectory)
Console.WriteLine("")
Console.WriteLine("TMP Folder")
Console.WriteLine(Environment.GetEnvironmentVariable("TMP"))
Console.WriteLine("")
Console.WriteLine("Class Path")
Console.WriteLine(Environment.GetEnvironmentVariable("ClassPath"))
Console.WriteLine("")
Console.readLine()
End Sub
End Class



Category VB.NET Interview Questions & Answers - Exam Mode / Learning Mode
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Question: How to get the environment information in VB.NET?
Answer:

The System.Environment namespace includes the functionality to get the environment information such as the UserName and OS Version.


File name is SystemInfo.vb
Imports System
Class SystemInfo
Shared Sub main()
Console.WriteLine("")
Console.WriteLine("Current User")
Console.WriteLine(Environment.UserName)
Console.WriteLine("")
Console.WriteLine("Name of the Machine")
Console.WriteLine(Environment.MachineName)
Console.WriteLine("")
Console.WriteLine("OS version")
Console.WriteLine(Environment.OSVersion)
Console.WriteLine("")
Console.WriteLine("System Directory")
Console.WriteLine(Environment.SystemDirectory)
Console.WriteLine("")
Console.WriteLine("TMP Folder")
Console.WriteLine(Environment.GetEnvironmentVariable("TMP"))
Console.WriteLine("")
Console.WriteLine("Class Path")
Console.WriteLine(Environment.GetEnvironmentVariable("ClassPath"))
Console.WriteLine("")
Console.readLine()
End Sub
End Class
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Sir my name is riyaz and my question is Object class in VB.net supports all classes in .net frameworks
iam creating DLL where i created a function

Public Sub BindListControl( ByVal Lst As Listbox, ByVal sql As String, ByVal TextField As String, Optional ByVal ValueFld As String = "")
Dim ds As New DataSet
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Dim Cmd As New SqlCommand

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With Cmd
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------------ --------- --------- --------- --------- --------- -
and Then i replaced function with Object
------------ --------- --------- --------- --------- --------- -

Public Sub BindListControl( ByVal Lst As Object, ByVal sql As String, ByVal TextField As String, Optional ByVal ValueFld As String = "")
Dim ds As New DataSet
Dim Ad As New SqlDataAdapter
Dim Cmd As New SqlCommand

Try
If cnn2.State = ConnectionState. Closed Then OpenConnection2( )

With Cmd
.Connection = cnn2
.CommandType = CommandType. Text
.CommandText = sql
End With
Ad = New SqlDataAdapter( Cmd)
Ad.Fill(ds, "tmp")
Lst.DataTextField = TextField
If ValueFld <> "" Then
Lst.DataValueField = ValueFld
End If
Lst.DataSource = ds
Lst.DataBind( )

Catch ex As Exception
Current.Response. Write(ex. Message)
Finally
ds.Dispose()
Ad.Dispose()
Cmd.Dispose( )
'cnn2.Close( )
End Try
End Sub
------------ --------- --------- --------- --------- --------- -
It will sucessfully work but if do it in c# as

public void BindListBox( ListBox Lst, string sqlquery, string TextField, string value)
{
//ListBox Lst;
//Lst = (ListBox)sender;
SqlConnection con = new SqlConnection( );
con.ConnectionStrin g = cnnstring;
con.Open();
if (con.State.ToString () == "Open")
{
SqlDataAdapter adapater = new SqlDataAdapter( sqlquery, con);
DataSet Ds = new DataSet();
SqlCommandBuilder cmd = new SqlCommandBuilder( adapater) ;
try
{

adapater.Fill( Ds, "temp");
Lst.DataTextField = TextField;
if (value != null)
{
Lst.DataValueField = value;
}
Lst.DataSource = Ds;
Lst.DataBind( );


}

catch (Exception ex)
{
Response.Write( ex.Message. ToString( ));
}
finally
{
con.Close();
adapater.Dispose( );
cmd.Dispose( );
}

}
else
{
Response.Write( "Connection Not Available");
}
}
--------------------------------------
It will work with ListBox control
-----------------------------------
if i replace ListBox with Object it will through Error that object does not contain defination for DataTextField, DataSource, DataBind( )
so sir it will work in vb.net why not in c# is any alternate way to do this or any other syntax
please send me response as earily as possible
Thank u sir
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