Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Unable to cast COM object of type 'System.__ComObject' to class type 'ADODB.InternalParameter'. Instances of types that represent COM components cannot be cast to types that do not represent COM compo

Posted on 2011-09-08
6
Medium Priority
?
1,415 Views
Last Modified: 2012-06-22
I am using ADODB to run a sql strored procedure in VB.Net.

when my code gets to the line

cmd.Parameters.Append(cmd.CreateParameter("CampaignName", ADODB.DataTypeEnum.adVarChar, ADODB.ParameterDirectionEnum.adParamInput, 50, "Annuities"))

I get the error in the title.

Can anybody suggest wy?
sqlstr = "SELECT * FROM WebEnquiries WHERE WebEnquiryID = '" & WebEnquiryID & "'"
        rs.Open(sqlstr, sqlCnn, ADODB.CursorTypeEnum.adOpenStatic, ADODB.LockTypeEnum.adLockOptimistic)

        If rs.RecordCount = 0 Then
            rs.Close()
            Exit Function
        End If


        Dim cmd As New ADODB.Command
        Dim cnn As New ADODB.Connection

        cnn.ConnectionString = sqlDialler
        cnn.Open()

        cmd.ActiveConnection = cnn
        cmd.CommandType = ADODB.CommandTypeEnum.adCmdStoredProc
        cmd.CommandText = "InsertCampaignRecord"

        cmd.Parameters.Append(cmd.CreateParameter("CampaignName", ADODB.DataTypeEnum.adVarChar, ADODB.ParameterDirectionEnum.adParamInput, 50, "Annuities"))
        cmd.Parameters.Append(cmd.CreateParameter("Tel1", ADODB.DataTypeEnum.adVarChar, ADODB.ParameterDirectionEnum.adParamInput, 20, rs.Fields("daytime_telephone").Value))

Open in new window

0
Comment
Question by:ict-torquilclark
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 4

Expert Comment

by:thewild
ID: 36501391
I believe the parenthesis are confusing Access.
Could you try :
cmd.Parameters.Append cmd.CreateParameter("CampaignName", ADODB.DataTypeEnum.adVarChar, ADODB.ParameterDirectionEnum.adParamInput, 50, "Annuities")

Open in new window

0
 
LVL 1

Author Comment

by:ict-torquilclark
ID: 36501420
I have tried that but visual studio just puts them back in.
0
 
LVL 4

Expert Comment

by:thewild
ID: 36501442
Really ? That's weird.
Maybe you should "call" the method then ?

Call cmd.Parameters.Append(cmd.CreateParameter("CampaignName", ADODB.DataTypeEnum.adVarChar, ADODB.ParameterDirectionEnum.adParamInput, 50, "Annuities"))

Open in new window

0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 1

Author Comment

by:ict-torquilclark
ID: 36503188
nope that daoes work either :(
0
 
LVL 83

Expert Comment

by:CodeCruiser
ID: 36506255
You may have been asked many times before but do you HAVE to use ADODB in VB.NET?
0
 
LVL 4

Accepted Solution

by:
thewild earned 2000 total points
ID: 36508393
There might be a problem with the ADO library you are referencing.
Wich version number is it ?
Can you try with another one (lower or higher version number) ?
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes some techniques which will make your VBA or Visual Basic Classic code easier to understand and maintain, whether by you, your replacement, or another Experts-Exchange expert.
This article describes how to use a set of graphical playing cards to create a Draw Poker game in Excel or VB6.
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Suggested Courses

604 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question