Dlookup Not Found Error

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Dlookup Error Handling

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Dlookup Error 2471

up Checking if record exists using DLookup (With Multiple Criteria) up vote 4 down vote favorite 1 Im trying to create a function in my VBA where if the record they are trying to insert already exists however it returns a access dlookup error type mismatch. EventCombo is a integer MedalCombo is string Private Sub MyCombo_BeforeUpdate(Cancel As Integer) If Not IsNull(DLookup("RacerID", "Medals", "RaceID = " + EventCombo.Value _ + " AND Medal = '" + MedalCombo.Value + "'" )) Then MsgBox "Record Exists" End If. End Sub What this does (or is supposed to do) is make sure no one else has the same medal in the same race. What am I doing wrong? ms-access vba access-vba share|improve this question edited Apr 21 '12 at 8:56 asked Apr dlookup #type error 21 '12 at 7:31 Imran 2,33872655 msdn.microsoft.com/en-us/library/bb148913%28v=office.12%29.a‌spx –Siddharth Rout Apr 21 '12 at 8:32 2 Use & to concatenate in VBA, + can lead to problems with returning a null string. Are you sure that the bound field of MedalCombo is not numeric? –Fionnuala Apr 21 '12 at 9:08 Thanks. That did the trick! –Imran Apr 21 '12 at 11:23 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote accepted With combo boxes in Access, you need to make sure that .value is really what you want. Often the first column is hidden which is .value while what is visible on the drop down box is not .value. When using a combo box to eliminate confusion I use the .columns property. Also, to make sure the result from the combo box is a number and not text (as you did not use quotes in your example) I used the val() function to convert the combobox data to a number. If it already is a number, this will have no effect. Otherwise, if it is a digit stored as a string, it will convert it to a number. This might not be strictly necessary but it eliminates another possible problem. If the combobox column has a value which is some text which cannot convert to a number it will return 0 which you can test for in your code. I cleaned up your code a bit with the fol

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Dlookup Null Error

easy. Dlookup and DAO recordset null value return check 100+ P: 553 questionit runtime error 2471 dlookup Dlookup() gives an error if the searchkey (the field i am looking for) is not found in the table.

Dlookup Syntax Error Missing Operator

How to check before Dlookup() statement whether the table contains the required value. Similarly, with DAO RecordSet : Set rst = db.OpenRecordset("Select name FROM Table1 WHERE name='" & "AName" & "'") MsgBox http://stackoverflow.com/questions/10257153/checking-if-record-exists-using-dlookup-with-multiple-criteria rst.Fields("name") <--------------------- Get error here if "AName" not returned from the table. I have tried doing If IsNull(rst) = True then ..... but seems like rst connot be checked against Null . Help please Jul 24 '07 #1 Post Reply Share this Question 11 Replies Expert 100+ P: 1,206 JKing IsNull() can be applied to both. Expand|Select|Wrap|Line Numbers IfIsNull(Dlookup())Then Msgbox"DlookupisNull!" Else 'yourcode Endif https://bytes.com/topic/access/answers/682424-dlookup-dao-recordset-null-value-return-check IfIsNull(rst.Fields("name"))Then Msgbox"Recordsetfieldisnull!" Else 'yourcodehere Endif Jul 24 '07 #2 reply 100+ P: 553 questionit I've got solution for RecordSet : Expand|Select|Wrap|Line Numbers Ifrecst.RecordCount<1Then MsgBox"nothingreturned" Please advise how to do the similar thing with Dlookup() Dlookup() gives an error if the searchkey (the field i am looking for) is not found in the table. How to check before Dlookup() statement whether the table contains the required value. Similarly, with DAO RecordSet : Set rst = db.OpenRecordset("Select name FROM Table1 WHERE name='" & "AName" & "'") MsgBox rst.Fields("name") <--------------------- Get error here if "AName" not returned from the table. I have tried doing If IsNull(rst) = True then ..... but seems like rst connot be checked against Null . Help please Jul 24 '07 #3 reply Expert 100+ P: 1,206 JKing See my above post. Dlookup returns null if there are no matches. Jul 24 '07 #4 reply Expert 5K+ P: 8,405 ADezii Dlookup() gives an error if the searchkey (the field i am looking for) is not found in the table. How to check before Dlookup() statement whether the table contains the required value. Similarly, with DAO RecordSet

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360 games PC games Windows games Windows phone games Entertainment All Entertainment Movies & TV Music Business & Education Business Students & educators Developers Sale Sale Find a store Gift cards Products Software & services Windows Office Free downloads & security Internet Explorer Microsoft Edge Skype OneNote OneDrive Microsoft Health MSN Bing Microsoft Groove Microsoft Movies & TV Devices & Xbox All Microsoft devices Microsoft Surface All Windows PCs & tablets PC accessories Xbox & games Microsoft Lumia All Windows phones Microsoft HoloLens For business Cloud Platform Microsoft Azure Microsoft Dynamics Windows for business Office for business Skype for business Surface for business Enterprise solutions Small business solutions Find a solutions provider Volume Licensing For developers & IT pros Develop Windows apps Microsoft Azure MSDN TechNet Visual Studio For students & educators Office for students OneNote in classroom Shop PCs & tablets perfect for students Microsoft in Education Support Sign in Cart Cart Javascript is disabled Please enable javascript and refresh the page Cookies are disabled Please enable cookies and refresh the page CV: {{ getCv() }} English (United States)‎ Terms of use Privacy & cookies Trademarks © 2016 Microsoft