janjuama84
asked on
Convertion from VB to C#
Can somebody please convert following code to C#?
''' <summary>
''' This page allows for classes to have seats deducted from it
''' </summary>
''' <remarks></remarks>
Partial Class _Default
  Inherits System.Web.UI.Page
  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    ' if first load then setup classes
    If Not Page.IsPostBack Then
      InitialiseClasses()
      UpdateLabels()
    End If
  End Sub
  ''' <summary>
  ''' Initialises the Class Arrays based on parameters passed
  ''' </summary>
  ''' <param name="ClassSizes">The Size of the Classes</param>
  ''' <param name="AmountofClasses">The
  ''' <remarks></remarks>
  Private Sub InitialiseClasses(Optional
    Dim TheClasses As New ArrayList()
    Dim i As Integer
    ' For the Amount of Classes Specified
    For i = 1 To AmountofClasses
      ' Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    Next
    ' Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses
    ' Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  End Sub
  ''' <summary>
  ''' Creates and returns an array list of 1 to the specified size
  ''' </summary>
  ''' <param name="ArrayListLength">The
  ''' <returns>ArrayList of integers from 1 to ArrayListLength</returns>
  ''' <remarks></remarks>
  Private Function PopulateArrayList(ByVal ArrayListLength As Integer) As ArrayList
    Dim myarray As New ArrayList
    Dim i As Integer
    ' For the size of the arraylist
    For i = 1 To ArrayListLength
      ' Add an integer of the value i
      myarray.Add(i)
    Next
    Return myarray
  End Function
  ''' <summary>
  ''' Resets the radiolist when the dropdownlist with classes is changed
  ''' </summary>
  ''' <param name="sender"></param>
  ''' <param name="e"></param>
  ''' <remarks></remarks>
  Protected Sub ddlClass_SelectedIndexChan
    ' ReBind the radiolist based on the amount of seats left in the class
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels()
  End Sub
  ''' <summary>
  ''' On Click update the amount of seats left in the class
  ''' </summary>
  ''' <param name="sender"></param>
  ''' <param name="e"></param>
  ''' <remarks></remarks>
  Protected Sub btnRegister_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRegister.Click
    ' Deduct the amount of seats based on the radio button selected
    Session("classes").Item(dd
    ' Bind the new amount of seats left
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels()
  End Sub
  ''' <summary>
  ''' Updates the labels for user feedback
  ''' </summary>
  ''' <remarks></remarks>
  Private Sub UpdateLabels()
    lblClass1.Text = Session("classes").Item(0)
    lblClass2.Text = Session("classes").Item(1)
    lblClass3.Text = Session("classes").Item(2)
  End Sub
End Class
''' <summary>
''' This page allows for classes to have seats deducted from it
''' </summary>
''' <remarks></remarks>
Partial Class _Default
  Inherits System.Web.UI.Page
  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    ' if first load then setup classes
    If Not Page.IsPostBack Then
      InitialiseClasses()
      UpdateLabels()
    End If
  End Sub
  ''' <summary>
  ''' Initialises the Class Arrays based on parameters passed
  ''' </summary>
  ''' <param name="ClassSizes">The Size of the Classes</param>
  ''' <param name="AmountofClasses">The
  ''' <remarks></remarks>
  Private Sub InitialiseClasses(Optional
    Dim TheClasses As New ArrayList()
    Dim i As Integer
    ' For the Amount of Classes Specified
    For i = 1 To AmountofClasses
      ' Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    Next
    ' Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses
    ' Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  End Sub
  ''' <summary>
  ''' Creates and returns an array list of 1 to the specified size
  ''' </summary>
  ''' <param name="ArrayListLength">The
  ''' <returns>ArrayList of integers from 1 to ArrayListLength</returns>
  ''' <remarks></remarks>
  Private Function PopulateArrayList(ByVal ArrayListLength As Integer) As ArrayList
    Dim myarray As New ArrayList
    Dim i As Integer
    ' For the size of the arraylist
    For i = 1 To ArrayListLength
      ' Add an integer of the value i
      myarray.Add(i)
    Next
    Return myarray
  End Function
  ''' <summary>
  ''' Resets the radiolist when the dropdownlist with classes is changed
  ''' </summary>
  ''' <param name="sender"></param>
  ''' <param name="e"></param>
  ''' <remarks></remarks>
  Protected Sub ddlClass_SelectedIndexChan
    ' ReBind the radiolist based on the amount of seats left in the class
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels()
  End Sub
  ''' <summary>
  ''' On Click update the amount of seats left in the class
  ''' </summary>
  ''' <param name="sender"></param>
  ''' <param name="e"></param>
  ''' <remarks></remarks>
  Protected Sub btnRegister_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRegister.Click
    ' Deduct the amount of seats based on the radio button selected
    Session("classes").Item(dd
    ' Bind the new amount of seats left
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels()
  End Sub
  ''' <summary>
  ''' Updates the labels for user feedback
  ''' </summary>
  ''' <remarks></remarks>
  Private Sub UpdateLabels()
    lblClass1.Text = Session("classes").Item(0)
    lblClass2.Text = Session("classes").Item(1)
    lblClass3.Text = Session("classes").Item(2)
  End Sub
End Class
ASKER CERTIFIED SOLUTION
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ASKER
what to do with
    // Warning!!! Optional parameters not supported
    // Warning!!! Optional parameters not supported
how to convert those?
    // Warning!!! Optional parameters not supported
    // Warning!!! Optional parameters not supported
how to convert those?
Optional parameters are not supported in C#. Â TO get the same behavior, you need to create mutliple methods. Â For example.
if you have a sub in vb called dosomething with two parameters and one is optional, in c# you would do
public void dosomething(int MyParm1){
//your code
}
public void dosomething(int MyParm1, int MyParm2){
//your code to use when both paramters are needed.
}
if you have a sub in vb called dosomething with two parameters and one is optional, in c# you would do
public void dosomething(int MyParm1){
//your code
}
public void dosomething(int MyParm1, int MyParm2){
//your code to use when both paramters are needed.
}
ASKER
this line
 Private Sub InitialiseClasses(Optional
is converted into this
private void InitialiseClasses(int ClassSizes, void =, void 15, int AmountofClasses, void =, void 3) {
doesn't look right
 Private Sub InitialiseClasses(Optional
is converted into this
private void InitialiseClasses(int ClassSizes, void =, void 15, int AmountofClasses, void =, void 3) {
doesn't look right
ASKER
Can you help me convert this properly....
  ''' <summary>
  ''' Resets the radiolist when the dropdownlist with classes is changed
  ''' </summary>
  ''' <param name="sender"></param>
  ''' <param name="e"></param>
  ''' <remarks></remarks>
  Protected Sub ddlClass_SelectedIndexChan
    ' ReBind the radiolist based on the amount of seats left in the class
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels()
  End Sub
  ''' <summary>
  ''' Resets the radiolist when the dropdownlist with classes is changed
  ''' </summary>
  ''' <param name="sender"></param>
  ''' <param name="e"></param>
  ''' <remarks></remarks>
  Protected Sub ddlClass_SelectedIndexChan
    ' ReBind the radiolist based on the amount of seats left in the class
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels()
  End Sub
Automated tools can't do it all! Â Try just changing it to
private void InitialiseClasses(int ClassSizes, int AmountofClasses) {
private void InitialiseClasses(int ClassSizes, int AmountofClasses) {
  /// <summary>
  ///  Resets the radiolist when the dropdownlist with classes is changed
  ///  </summary>
  ///  <param name="sender"></param>
  ///  <param name="e"></param>
  ///  <remarks></remarks>
  protected void ddlClass_SelectedIndexChan
    //  ReBind the radiolist based on the amount of seats left in the class
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels();
  }
  ///  Resets the radiolist when the dropdownlist with classes is changed
  ///  </summary>
  ///  <param name="sender"></param>
  ///  <param name="e"></param>
  ///  <remarks></remarks>
  protected void ddlClass_SelectedIndexChan
    //  ReBind the radiolist based on the amount of seats left in the class
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels();
  }
In the IDE, highlight the ddlClass object and in the SelectedIndexChanged event, enter ddlClass_SelectedIndexChan
ddlClass.SelectedIndexChan
ddlClass.SelectedIndexChan
ASKER
this is the code I have right now
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.
using System.Web.UI.HtmlControls
public partial class Labs_lab2 : System.Web.UI.Page
{
protected void Page_Load(object sender, System.EventArgs e) {
    //  if first load then setup classes
    if (!Page.IsPostBack) {
      InitialiseClasses();
      UpdateLabels();
    }
}
  private void InitialiseClasses(int ClassSizes, int AmountofClasse) {
    ClassSizes = 15;
    AmountofClasse = 3;
    ArrayList TheClasses = new ArrayList();
    // Warning!!! Optional parameters not supported
    // Warning!!! Optional parameters not supported
    int i;
    //  For the Amount of Classes Specified
    for (i = 1; (i <= AmountofClasses); i++) {
      //  Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    }
    //  Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses;
    //  Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  }
  private ArrayList PopulateArrayList(int ArrayListLength) {
    ArrayList myarray = new ArrayList();
    int i;
    //  For the size of the arraylist
    for (i = 1; (i <= ArrayListLength); i++) {
      //  Add an integer of the value i
      myarray.Add(i);
    }
    return myarray;
  }
 Â
  protected void ddlClass_SelectedIndexChan
    //  ReBind the radiolist based on the amount of seats left in the class
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels();
  }
 Â
  protected void btnPurchase_Click(object sender, System.EventArgs e) {
    //  Deduct the amount of seats based on the radio button selected
    Session("classes").Item[dd
          - (radSeatsAvailable.Selecte
    //  Bind the new amount of seats left
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels();
  }
 Â
  private void UpdateLabels() {
    lblClass1.Text = Session("classes").Item[0]
    lblClass2.Text = Session("classes").Item[1]
    lblClass3.Text = Session("classes").Item[2]
  }
}
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.
using System.Web.UI.HtmlControls
public partial class Labs_lab2 : System.Web.UI.Page
{
protected void Page_Load(object sender, System.EventArgs e) {
    //  if first load then setup classes
    if (!Page.IsPostBack) {
      InitialiseClasses();
      UpdateLabels();
    }
}
  private void InitialiseClasses(int ClassSizes, int AmountofClasse) {
    ClassSizes = 15;
    AmountofClasse = 3;
    ArrayList TheClasses = new ArrayList();
    // Warning!!! Optional parameters not supported
    // Warning!!! Optional parameters not supported
    int i;
    //  For the Amount of Classes Specified
    for (i = 1; (i <= AmountofClasses); i++) {
      //  Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    }
    //  Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses;
    //  Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  }
  private ArrayList PopulateArrayList(int ArrayListLength) {
    ArrayList myarray = new ArrayList();
    int i;
    //  For the size of the arraylist
    for (i = 1; (i <= ArrayListLength); i++) {
      //  Add an integer of the value i
      myarray.Add(i);
    }
    return myarray;
  }
 Â
  protected void ddlClass_SelectedIndexChan
    //  ReBind the radiolist based on the amount of seats left in the class
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels();
  }
 Â
  protected void btnPurchase_Click(object sender, System.EventArgs e) {
    //  Deduct the amount of seats based on the radio button selected
    Session("classes").Item[dd
          - (radSeatsAvailable.Selecte
    //  Bind the new amount of seats left
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
    UpdateLabels();
  }
 Â
  private void UpdateLabels() {
    lblClass1.Text = Session("classes").Item[0]
    lblClass2.Text = Session("classes").Item[1]
    lblClass3.Text = Session("classes").Item[2]
  }
}
Are you getting errors?
ASKER
yes here is it
Compiler Error Message: CS1501: No overload for method 'InitialiseClasses' takes '0' arguments
Source Error:
Â
Line 15: Â Â Â Â // Â if first load then setup classes
Line 16: Â Â Â Â if (!Page.IsPostBack) {
Line 17: Â Â Â Â Â Â InitialiseClasses();
Line 18: Â Â Â Â Â Â UpdateLabels();
Line 19: Â Â Â Â }
Â
Compiler Error Message: CS1501: No overload for method 'InitialiseClasses' takes '0' arguments
Source Error:
Â
Line 15: Â Â Â Â // Â if first load then setup classes
Line 16: Â Â Â Â if (!Page.IsPostBack) {
Line 17: Â Â Â Â Â Â InitialiseClasses();
Line 18: Â Â Â Â Â Â UpdateLabels();
Line 19: Â Â Â Â }
Â
Ok....so your call to initialiseClasses was not using either of the optional paramters in VB, so you new method should be this. Â Replace your existing IntialiseClasses method with these 2 methods.
 private void InitialiseClasses() {
    ClassSizes = 15;
    AmountofClasse = 3;
    ArrayList TheClasses = new ArrayList();
    // Warning!!! Optional parameters not supported
    // Warning!!! Optional parameters not supported
    int i;
    //  For the Amount of Classes Specified
    for (i = 1; (i <= AmountofClasses); i++) {
      //  Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    }
    //  Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses;
    //  Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  }
 private void InitialiseClasses(int ClassSizes, int AmountofClasse) {
    ArrayList TheClasses = new ArrayList();
    int i;
    //  For the Amount of Classes Specified
    for (i = 1; (i <= AmountofClasses); i++) {
      //  Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    }
    //  Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses;
    //  Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  }
 private void InitialiseClasses() {
    ClassSizes = 15;
    AmountofClasse = 3;
    ArrayList TheClasses = new ArrayList();
    // Warning!!! Optional parameters not supported
    // Warning!!! Optional parameters not supported
    int i;
    //  For the Amount of Classes Specified
    for (i = 1; (i <= AmountofClasses); i++) {
      //  Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    }
    //  Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses;
    //  Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  }
 private void InitialiseClasses(int ClassSizes, int AmountofClasse) {
    ArrayList TheClasses = new ArrayList();
    int i;
    //  For the Amount of Classes Specified
    for (i = 1; (i <= AmountofClasses); i++) {
      //  Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    }
    //  Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses;
    //  Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  }
Or even better, with this....
 private void InitialiseClasses() {
    ClassSizes = 15;
    AmountofClasse = 3;
    InitialiseClasses(ClassSiz
}
 private void InitialiseClasses(int ClassSizes, int AmountofClasse) {
    ArrayList TheClasses = new ArrayList();
    int i;
    //  For the Amount of Classes Specified
    for (i = 1; (i <= AmountofClasses); i++) {
      //  Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    }
    //  Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses;
    //  Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  }
 private void InitialiseClasses() {
    ClassSizes = 15;
    AmountofClasse = 3;
    InitialiseClasses(ClassSiz
}
 private void InitialiseClasses(int ClassSizes, int AmountofClasse) {
    ArrayList TheClasses = new ArrayList();
    int i;
    //  For the Amount of Classes Specified
    for (i = 1; (i <= AmountofClasses); i++) {
      //  Add an integer of size ClassSizes to the ArrayList
      TheClasses.Add(ClassSizes)
    }
    //  Add the Classes Arraylist to the Session
    Session("Classes") = TheClasses;
    //  Create an Arraylist of the size of ClassSizes and bind it to the Radio List
    radSeatsAvailable.DataSour
    radSeatsAvailable.DataBind
  }
ASKER
got this error now
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0118: 'System.Web.UI.Page.Sessio
Source Error:
Â
Line 40: Â Â Â Â }
Line 41: Â Â Â Â // Â Add the Classes Arraylist to the Session
Line 42: Â Â Â Â Session("Classes") = TheClasses;
Line 43: Â Â Â Â // Â Create an Arraylist of the size of ClassSizes and bind it to the Radio List
Line 44: Â Â Â Â radSeatsAvailable.DataSour
Â
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0118: 'System.Web.UI.Page.Sessio
Source Error:
Â
Line 40: Â Â Â Â }
Line 41: Â Â Â Â // Â Add the Classes Arraylist to the Session
Line 42: Â Â Â Â Session("Classes") = TheClasses;
Line 43: Â Â Â Â // Â Create an Arraylist of the size of ClassSizes and bind it to the Radio List
Line 44: Â Â Â Â radSeatsAvailable.DataSour
Â
try
Session["Classes"] = TheClasses;
Session["Classes"] = TheClasses;
ASKER
that solved that issues here is another one
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0117: 'object' does not contain a definition for 'Item'
Source Error:
Â
Line 61: Â Â protected void ddlClass_SelectedIndexChan
Line 62: Â Â Â Â // Â ReBind the radiolist based on the amount of seats left in the class
Line 63: Â Â Â Â radSeatsAvailable.DataSour
Line 64: Â Â Â Â radSeatsAvailable.DataBind
Line 65: Â Â Â Â UpdateLabels();
Â
Source File: C:\Inetpub\int422_071sq08\
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0117: 'object' does not contain a definition for 'Item'
Source Error:
Â
Line 61: Â Â protected void ddlClass_SelectedIndexChan
Line 62: Â Â Â Â // Â ReBind the radiolist based on the amount of seats left in the class
Line 63: Â Â Â Â radSeatsAvailable.DataSour
Line 64: Â Â Â Â radSeatsAvailable.DataBind
Line 65: Â Â Â Â UpdateLabels();
Â
Source File: C:\Inetpub\int422_071sq08\
In C# you need to type everything. Â objects in Session are object types. Â To access their members you need to explicitly convert them to what they are.
radSeatsAvailable.DataSour
radSeatsAvailable.DataSour
ASKER
its not helping me man... lots of error... not sure what to do
ASKER
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0117: 'object' does not contain a definition for 'Item'
Source Error:
Â
Line 61: Â Â protected void ddlClass_SelectedIndexChan
Line 62: Â Â Â Â // Â ReBind the radiolist based on the amount of seats left in the class
Line 63: Â Â Â Â radSeatsAvailable.DataSour
Line 64: Â Â Â Â radSeatsAvailable.DataBind
Line 65: Â Â Â Â UpdateLabels();
Â
Compiler Error Message: CS0117: 'object' does not contain a definition for 'Item'
Source Error:
Â
Line 61: Â Â protected void ddlClass_SelectedIndexChan
Line 62: Â Â Â Â // Â ReBind the radiolist based on the amount of seats left in the class
Line 63: Â Â Â Â radSeatsAvailable.DataSour
Line 64: Â Â Â Â radSeatsAvailable.DataBind
Line 65: Â Â Â Â UpdateLabels();
Â
This is the same exact error as above, you need to type Session["classes"] to an ArrayList
radSeatsAvailable.DataSour
or to make it easier to understand....
ArrayList x = (ArrayList) Session["classes"];
radSeatsAvailable.DataSour
radSeatsAvailable.DataBind
UpdateLabels();
radSeatsAvailable.DataSour
or to make it easier to understand....
ArrayList x = (ArrayList) Session["classes"];
radSeatsAvailable.DataSour
radSeatsAvailable.DataBind
UpdateLabels();
ASKER
this one now
Â
Line 26: Â Â
Line 27:
Line 28: Â Â private ArrayList PopulateArrayList(int ArrayListLength) {
Line 29: Â Â Â Â ArrayList myarray = new ArrayList();
Line 30: Â Â Â Â int i;
Â
Â
Line 26: Â Â
Line 27:
Line 28: Â Â private ArrayList PopulateArrayList(int ArrayListLength) {
Line 29: Â Â Â Â ArrayList myarray = new ArrayList();
Line 30: Â Â Â Â int i;
Â
Try
System.Collections.ArrayLi
System.Collections.ArrayLi
http://www.carlosag.net/Tools/CodeTranslator/Default.aspx