Creating Object Using Array In A Loop

Apr 17, 2008

I would like to populate an array with an object. In other words, I would like for each element in the array to consist of an object that has several elements. Below is some code so you can see what I'm talking about:

Function buildObj()
   Dim countLimit As Integer = 5
   Dim mArray() As myObject

     While reader.Read()
          For counter = 0 To countLimit - 1
                mArray(counter).objVal1 = reader.GetValue(0)  'Error is here
                mArray(counter).objVal2 = reader.GetValue(1)
                mArray(counter).objVal3 = reader.GetValue(2)
                counter += 1
          Next
     End While

     Return mArray

End Function

Dim showValArr As Array = buildObj()
Response.Write(showValArr(0).objVal1.ToString)

When I build my site, I get the following error:
Object reference not set to an instance of an object.

It's pointing to the line that says "Error is here". Any ideas would be very helpful.
Thank you!

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Hi, I am trying to do a loop while a list of array is assigned ('CHP,CNH,COW') ... I am using comma seperator to get each list value ... but, it donest really do what I am trying to do ... pls help!!! How do I loop through each value and do the rest ...??
=====================================
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and so on..

then i create list of array like below:

The counter for insert the week one by one

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Dear all,

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ForEach: Enumerator=ADO Enumerator, Enumeration Mode=Rows in first table




Public Sub Main()
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Greetings!

I come before you seeking assistance on a package that basically flows very much like the "Table Driven foreach Loops" example provided by Kirk Haselden at http://sqljunkies.com/WebLog/knight_reign/archive/2005/03/25/9588.aspx


I am presently encountering the following exception:


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I look forward to your reply. Thank you and Grand weekend to you and a very Blessed Thanksgiving.



Thanks,

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[Code] ....

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using System.Configuration;
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Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Source Error:



Line 32:
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Line 35:
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[NullReferenceException: Object reference not set to an instance of an object.]
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'
Me.DaAuthorLogin.SelectCommand = Me.SqlSelectCommand1
Me.DaAuthorLogin.TableMappings.AddRange(New System.Data.Common.DataTableMapping() {New System.Data.Common.DataTableMapping("Table", "T_Author", New System.Data.Common.DataColumnMapping() {New System.Data.Common.DataColumnMapping("AuthorAlias", "AuthorAlias"), New System.Data.Common.DataColumnMapping("AuthorEmail", "AuthorEmail"), New System.Data.Common.DataColumnMapping("AuthorPassword", "AuthorPassword"), New System.Data.Common.DataColumnMapping("LastName", "LastName"), New System.Data.Common.DataColumnMapping("PreferredName", "PreferredName")})})
'
'MDData
'
Me.MDData.ConnectionString = "Data Source=CIS1022DAVID;Initial Catalog=CGData;Integrated Security=True;Pooling" & _
"=False"
Me.MDData.FireInfoMessageEventOnUserErrors = False
'
'DsAuthorLogin
'
Me.DsAuthorLogin.DataSetName = "DsAuthorLogin"
Me.DsAuthorLogin.SchemaSerializationMode = System.Data.SchemaSerializationMode.IncludeSchema
CType(Me.DsAuthorLogin, System.ComponentModel.ISupportInitialize).EndInit()
End Sub
Friend WithEvents SqlSelectCommand1 As System.Data.SqlClient.SqlCommand
Friend WithEvents MDData As System.Data.SqlClient.SqlConnection
Friend WithEvents DaAuthorLogin As System.Data.SqlClient.SqlDataAdapter
Friend WithEvents DsAuthorLogin As MedicalDecisions.DsAuthorLogin
'NOTE: The following placeholder declaration is required by the Web Form Designer.
'Do not delete or move it.
Private designerPlaceholderDeclaration As System.Object
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs)
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
'no code here
End Sub
Private Sub AuthorLoginRegister_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AuthorLoginRegister.Click
'for new author registration
Response.Redirect("AuthorInformation.aspx")
End Sub
Private Sub AuthorLoginBack_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AuthorLoginBack.Click
'to navigate back
Response.Redirect("MainPaths.aspx")
End Sub
Protected Sub AuthorLoginPassword_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AuthorLoginPassword.TextChanged
'pass the parameters to the dataadapter and return dataset
DaAuthorLogin.SelectCommand.Parameters("@AuthorEmail").Value = AuthorLoginEmail.Text
DaAuthorLogin.SelectCommand.Parameters("@AuthorPassword").Value = AuthorLoginPassword.Text
MDData.Open()
DaAuthorLogin.Fill(DsAuthorLogin, "T_Author")
MDData.Close()
'set session objects
If DsAuthorLogin.T_Author.Rows.Count > 0 Then
Session("AuthorAlias") = DsAuthorLogin.T_Author(0).AuthorAlias
Session("LastName") = DsAuthorLogin.T_Author(0).LastName
Session("PreferredName") = DsAuthorLogin.T_Author(0).PreferredName
Response.Redirect("AuthorPaths.aspx")
Else : AuthorLoginNotValid.Visible = True
AuthorLoginEmail.Text = ""
AuthorLoginPassword.Text = ""
End If
End Sub
End Class
 
Thanks in advance,
David

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Anyone know what this error means and how to get rid of it?



Public Sub Main()

Dim myMessage As Net.Mail.MailMessage

Dim mySmtpClient As Net.Mail.SmtpClient

myMessage.To(20) = New Net.Mail.MailAddress(me@hotmail.com)

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Hi,

I am trying to develop a custom algorithm. I have implemented and tested training methods, however I fail at prediction phase. When I try to run a prediction query against a model created with my algorithm I get:


Executing the query ...
Obtained object of type: Microsoft.AnalysisServices.AdomdClient.AdomdDataReader
COM error: COM error: DMPluginWrapper; Object reference not set to an instance of an object..
Execution complete


I know this is not very descriptive, but I have seen that algorith doesn't even executes my Predict(..) function (I can test this by logging to a text file)
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I am trying to send some data back to our as/400 from SQL server. Before I do so I need to delete entries from the table. I have an odbc connection set up and have used it sucessfully in a datareader compoenent but but when I try to use it for a delete SQL task it give me the followign error. what am I doing wrong? I even tried hardcoding in the system name/library name.

Here is my delete sql script
DELETE FROM DSSCNTL Where Companycode = 10


TITLE: SQL Task
------------------------------
Object reference not set to an instance of an object.
------------------------------
BUTTONS:
OK
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