ASP.NET

CREATE OR REPLACE PACKAGE rollsearch AS
  TYPE t_cursor IS REF CURSOR;
  Procedure rol_cursor(c_rol in varchar2,c_cnm in varchar2,c_fnm in varchar2,
  c_mnm in varchar2,d_dob in date,n_year in number,c_exam in varchar2,c_main_supp in varchar2,
  io_cursor OUT t_cursor);
  END rollsearch;

CREATE OR REPLACE PACKAGE BODY rollsearch AS
  Procedure rol_cursor(c_rol in varchar2,c_cnm in varchar2,c_fnm in varchar2,
  c_mnm in varchar2,d_dob in date,n_year in number,c_exam in varchar2,c_main_supp in varchar2,
  io_cursor OUT t_cursor)
  IS
  v_cursor t_cursor;
  v_sql varchar2(1000);
  begin
  ...
  ...
  end rol_cursor;
  end rollsearch;

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim Ds As New DataSet()
    Dim Oraclecon As New OracleConnection("Data Source=orcl;User ID=exam2;Password=exam2")
    Oraclecon.Open()
    Dim myCMD As New OracleCommand()
    myCMD.Connection = Oraclecon
    myCMD.CommandText = "rollsearch.rol_cursor"
    myCMD.CommandType = CommandType.StoredProcedure
    myCMD.Parameters.Add(New OracleParameter("c_rol", OracleType.VarChar, 7)).Direction = ParameterDirection.Input
    myCMD.Parameters.Add(New OracleParameter("c_cnm", OracleType.VarChar, 30)).Direction = ParameterDirection.Input
    myCMD.Parameters.Add(New OracleParameter("c_fnm", OracleType.VarChar, 30)).Direction = ParameterDirection.Input
    myCMD.Parameters.Add(New OracleParameter("c_mnm", OracleType.VarChar, 30)).Direction = ParameterDirection.Input
    myCMD.Parameters.Add(New OracleParameter("d_dob", OracleType.DateTime)).Direction = ParameterDirection.Input
    myCMD.Parameters.Add(New OracleParameter("n_year", OracleType.Number, 4)).Direction = ParameterDirection.Input
    myCMD.Parameters.Add(New OracleParameter("c_exam", OracleType.VarChar, 1)).Direction = ParameterDirection.Input
    myCMD.Parameters.Add(New OracleParameter("c_exam_supp", OracleType.VarChar, 1)).Direction = ParameterDirection.Input
    myCMD.Parameters.Add(New OracleParameter("io_cursor", OracleType.Cursor)).Direction = ParameterDirection.Output
    myCMD.Parameters.Item(0).Value = Trim(TextBox5.Text) 'Roll Number
    myCMD.Parameters.Item(1).Value = Trim(TextBox1.Text) 'Candidate Name
    myCMD.Parameters.Item(2).Value = Trim(TextBox2.Text) 'Father Name
    myCMD.Parameters.Item(3).Value = Trim(TextBox3.Text) 'Mother Name

    If TextBox4.Text <> "" Then
        myCMD.Parameters.Item(4).Value = Convert.ToDateTime(Trim(TextBox4.Text)) 'Date of birth
    End If

    If Left(DropDownList1.Text, 1) = "S" Then
        myCMD.Parameters.Item(5).Value = 0  'Exam
    Else
        myCMD.Parameters.Item(5).Value = Val(DropDownList2.Text) 'Year
    End If

    If Left(DropDownList1.Text, 1) = "S" Then
        myCMD.Parameters.Item(6).Value = ""  'Exam
    Else
        myCMD.Parameters.Item(6).Value = Left(DropDownList1.Text, 1) 'Exam
    End If

    If Left(DropDownList1.Text, 1) = "S" Then
        myCMD.Parameters.Item(7).Value = ""  'Main Supp
    Else
        myCMD.Parameters.Item(7).Value = Left(DropDownList3.Text, 1) 'Main Supp
    End If
    'MessageBox.Show(myCMD.Parameters.Item(0).Value, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    'MessageBox.Show(myCMD.Parameters.Item(1).Value, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    'MessageBox.Show(myCMD.Parameters.Item(2).Value, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    'MessageBox.Show(myCMD.Parameters.Item(3).Value, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    'MessageBox.Show(myCMD.Parameters.Item(4).Value, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    'MessageBox.Show(myCMD.Parameters.Item(5).Value, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    'MessageBox.Show(myCMD.Parameters.Item(6).Value, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    'MessageBox.Show(myCMD.Parameters.Item(7).Value, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    'MessageBox.Show(myCMD.Parameters.Count, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    Dim MyDA As New OracleDataAdapter(myCMD)
    Try
        MyDA.Fill(Ds)
    Catch Myex As Exception
        MessageBox.Show(Myex.Message, "Xx", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly)
    End Try
    datagrid1.DataSource = Ds.Tables(0)
    Oraclecon.Close()
End Sub

System.Data.OracleClient.OracleException was unhandled by user code
  ErrorCode=-2146232008
  Message="ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'ROL_CURSOR'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
"
  Source="System.Data.OracleClient"
  StackTrace:
       at System.Data.OracleClient.OracleConnection.CheckError(OciErrorHandle errorHandle, Int32 rc)
       at System.Data.OracleClient.OracleCommand.Execute(OciStatementHandle statementHandle, CommandBehavior behavior, Boolean needRowid, OciRowidDescriptor& rowidDescriptor, ArrayList& resultParameterOrdinals)
       at System.Data.OracleClient.OracleCommand.Execute(OciStatementHandle statementHandle, CommandBehavior behavior, ArrayList& resultParameterOrdinals)
       at System.Data.OracleClient.OracleCommand.ExecuteReader(CommandBehavior behavior)
       at System.Data.OracleClient.OracleCommand.ExecuteDbDataReader(CommandBehavior behavior)
       at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior)
       at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
       at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
       at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet)
       at _Default.Button1_Click(Object sender, EventArgs e) in c:\inetpub\wwwroot\Rollsearch\Default.aspx.vb:line 62
       at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
       at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
       at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
       at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
       at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)