I'm getting this type of Error,can anybody help me ?

Question

1.00/5 (2 votes)

See more:

VB

ASP

Conversion from type 'DBNull' to type 'Integer' is not valid.

Posted 11-Dec-14 22:08pm

SathishRam

Add a Solution

Comments

Jameel VM 12-Dec-14 4:12am

where is the code?

SathishRam 12-Dec-14 4:38am

Dim ClassRosterID As Integer
Dim dr As System.Data.DataRow
For Each dr In _dtAttendees.Rows
oDM.Initialize("ClassRoster_Insert")
oDM.AddOutputParameter("ClassRosterID", 41)
If _ClassChainID < 1 Then oDM.AddParameter("ClassID", _ClassID) 'Only ClassID or ClassChainID is present
If _ClassChainID > 0 Then oDM.AddParameter("ClassChainID", _ClassChainID)
If _SoldToCustomerID > 0 Then oDM.AddParameter("CustomerID", _SoldToCustomerID) ' Only CustomerID or ProspectID is present and isSKMEmployee = 0
If _SoldToProspectID > 0 Then oDM.AddParameter("ProspectID", _SoldToProspectID)
'@isSKMEmployee Int = 0 -- If Employee then CustomerID & ProspectID are both blank

Select Case Right(dr("PKID").ToString, 1)
Case "U" ' User
oDM.AddParameter("StudentUserID", Mid(dr("PKID").ToString, 2))
Case "A" ' Alternate contact
oDM.AddParameter("StudentCustomerAlternateContactID", Mid(dr("PKID").ToString, 2))
Case "N" ' New user
Case "M" ' Primary user on account
Case "R" ' Roster
End Select

oDM.AddParameter("FirstName", dr("FirstName"))
oDM.AddParameter("LastName", dr("LastName"))
oDM.AddParameter("Phone", dr("Phone"))
oDM.AddParameter("Email", dr("Email"))
oDM.AddParameter("RegisterUserID", _oUser.ThisUserID)

oDM.AddParameter("Status", Status)
oDM.AddParameter("isPaid", isPaid)
If TransactionID > 0 Then oDM.AddParameter("TransactionID", TransactionID)
'@Note nvarchar(max) = Null
oDM.AddParameter("UpdatedBy", _oUser.drUser("FullName"))
_DBUpdateLog.Append(oDM.OutputCallConfiguration())
ClassRosterID = oDM.ExecuteStoreProcedure("ClassRosterID")
Next

Thanks7872 12-Dec-14 4:24am

And which part of this error is unclear? Have you searched using Google? Why you people expect someone will do something for you?

SathishRam 12-Dec-14 4:36am

can u able to answer cause for a reason ,an error is common to all and has common solution for that ,it's just a help,not i'm asking you to work for me

Thanks7872 12-Dec-14 4:40am

https://www.google.co.in/search?q=Conversion+from+type+%27DBNull%27+to+type+%27Integer%27+is+not+valid&oq=Conversion+from+type+%27DBNull%27+to+type+%27Integer%27+is+not+valid&aqs=chrome..69i57&sourceid=chrome&es_sm=93&ie=UTF-8

May i know why this 9,840 results doesn't work for you?

SathishRam 12-Dec-14 4:53am

When answering a question please:
Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Let's work to help developers, not make them feel stupid.

Thanks7872 12-Dec-14 4:56am

And have you gone through the guidelines defined for the people who are posting questions(Right pane of the ask question page)? Have you gone through first two guidelines? Do you understand what it says?

SathishRam 12-Dec-14 5:03am

English is not my mother tongue it's just a language!!!same i'm answering you, Got it !!!

Blutfaust 12-Dec-14 17:02pm

So you think being rude is the right way to obtain help?

SathishRam 12-Dec-14 4:43am

Oh !!!! i can also know to search in google ,thanks any way

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

E.F. Nijboer · Accepted Answer · 2014-12-11T22:12:00

Solution 1

You need to check for DBNull values using IsDBNull. Check this link:
http://msdn.microsoft.com/en-us/library/tckcces5%28v=vs.90%29.aspx[^]

Good luck!

Posted 11-Dec-14 22:12pm

E.F. Nijboer

Raul Iloc · Accepted Answer · 2014-12-11T22:16:00

1.You are trying to read an int value from the DB that allow also NULL values, and your current field has NULL value in the database that is equivalent with DBNull in the C# code.

2.The solution is, that in your reader to manage this case like in the next example:

C#

int stockQuantity = (reader["Stock"] == DBNull.Value ? 0 : (int)reader["Stock"]);