ASP.net C# Simple example of using a reader to loop through fields as in VB.net

Hi. I am new to C#. Could someone please direct me to a code example of reading through a SQL database in a similar fashion to the VB.net code below


  Protected Sub Login_Button_Click(sender As Object, e As EventArgs) Handles Login_Button.Click

        Dim oAdminID As String
        Dim oPassword As String
        Dim SQL As String

        Dim myConnection As SqlConnection = New SqlConnection("server=196cc;uid=Murray;pwd=cct;database=sgg")

        'Dim command As SqlCommand = New SqlCommand("SELECT * From Reviewers;", myConnection)

        SQL = "SELECT * From Administrators"
        Dim command As SqlCommand = New SqlCommand(SQL, myConnection)
        Try

            myConnection.Open()

            Dim reader As SqlDataReader = command.ExecuteReader()

            If reader.HasRows Then

                Do While reader.Read()
                    If Not reader("AdminID").Equals(DBNull.Value) Then
                        oAdminID = reader("AdminID").ToString()
                    Else
                        oAdminID = ""
                    End If
                    If Not reader("Password").Equals(DBNull.Value) Then
                        oPassword = reader("Password").ToString()
                    Else
                        oPassword = ""
                    End If


                    If oAdminID = Me.AdminID.Text Then
                        If oPassword = Password.Text Then

                            Me.Label_LoggedIn.Text = "Logged in:"
                            Me.Label_Reviewer.Text = oAdminID


                            Me.Label_Error1.Text = ""
                            Me.Panel1.Visible = True

                        Else
                            Me.Label_Error1.Text = "The password that you entered does not match the Reviewer namee."
                        End If
                    Else
                        Me.Label_Error1.Text = "The username entered does not exist"
                    End If

                Loop
            Else
                'Console.WriteLine("No rows found.")
            End If

            reader.Close()

            myConnection.Close()

        Catch ex As Exception
            Me.Label_Error1.Text = ex.Message
        End Try
    End Sub
Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Lalit ChandraCommented:
try this
string oAdminID = null;
string oPassword = null;
string SQL = null;

SqlConnection myConnection = new SqlConnection("server=196cc;uid=Murray;pwd=cct;database=sgg");

//Dim command As SqlCommand = New SqlCommand("SELECT * From Reviewers;", myConnection)

SQL = "SELECT * From Administrators";
SqlCommand command = new SqlCommand(SQL, myConnection);

try {
      myConnection.Open();

      SqlDataReader reader = command.ExecuteReader();


      if (reader.HasRows) {
            while (reader.Read()) {
                  if (!reader("AdminID").Equals(DBNull.Value)) {
                        oAdminID = reader("AdminID").ToString();
                  } else {
                        oAdminID = "";
                  }
                  if (!reader("Password").Equals(DBNull.Value)) {
                        oPassword = reader("Password").ToString();
                  } else {
                        oPassword = "";
                  }


                  if (oAdminID == this.AdminID.Text) {

                        if (oPassword == Password.Text) {
                              this.Label_LoggedIn.Text = "Logged in:";
                              this.Label_Reviewer.Text = oAdminID;


                              this.Label_Error1.Text = "";
                              this.Panel1.Visible = true;

                        } else {
                              this.Label_Error1.Text = "The password that you entered does not match the Reviewer namee.";
                        }
                  } else {
                        this.Label_Error1.Text = "The username entered does not exist";
                  }

            }
      } else {
            //Console.WriteLine("No rows found.")
      }

      reader.Close();

      myConnection.Close();

} catch (Exception ex) {
      this.Label_Error1.Text = ex.Message;
}
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Anurag ThakurTechnical ManagerCommented:
There are free code conversion sites available on the Internet which convert code from vb.net to c# and vice versa.

In an answer to your another question I have give a link for C# tutorial on ado.net and that will also be helpful for you.
0
Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAuthor Commented:
Thanks
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
ASP.NET

From novice to tech pro — start learning today.