Answer by Stuart Dobson for How to check for a Null value in VB.NET
I find the safest way is If Not editTransactionRow.pay_id Is NothingIt might read terribly, but the ISIL is actually very different from IsNot Nothing, and it doesn't try and evaluate the expression,...
View ArticleAnswer by Arunsai for How to check for a Null value in VB.NET
If Not IsDBNull(dr(0)) Then use dr(0)End IfDon't use = Nothing or Is Nothing, because it fails to check if the datarow value is null or not. I tried, and I make sure the above code worked.
View ArticleAnswer by Aaron G for How to check for a Null value in VB.NET
You can also use the IsDBNull function:If Not IsDBNull(editTransactionRow.pay_id) Then...
View ArticleAnswer by D Infosystems for How to check for a Null value in VB.NET
This is the exact answer. Try this code:If String.IsNullOrEmpty(editTransactionRow.pay_id.ToString()) = False Then stTransactionPaymentID = editTransactionRow.pay_id 'Check for null valueEnd If
View ArticleAnswer by Shawn for How to check for a Null value in VB.NET
If Short.TryParse(editTransactionRow.pay_id, New Short) Then editTransactionRow.pay_id.ToString()
View ArticleAnswer by Micah for How to check for a Null value in VB.NET
If you are using a strongly-typed dataset then you should do this:If Not ediTransactionRow.Ispay_id1Null Then'Do processing hereEnd IfYou are getting the error because a strongly-typed data set...
View ArticleAnswer by Garry Shutler for How to check for a Null value in VB.NET
The equivalent of null in VB is Nothing so your check wants to be:If editTransactionRow.pay_id IsNot Nothing Then stTransactionPaymentID = editTransactionRow.pay_idEnd IfOr possibly, if you are...
View ArticleAnswer by Vincent for How to check for a Null value in VB.NET
If Not editTransactionRow.pay_id AndAlso String.IsNullOrEmpty(editTransactionRow.pay_id.ToString()) = False Then stTransactionPaymentID = editTransactionRow.pay_id 'Check for null valueEnd If
View ArticleAnswer by Zachary Yates for How to check for a Null value in VB.NET
You have to check to ensure editTransactionRow is not null and pay_id is not null.
View ArticleAnswer by Patrick Desjardins for How to check for a Null value in VB.NET
editTransactionRow.pay_id is Null so in fact you are doing: null.ToString() and it cannot be executed. You need to check editTransactionRow.pay_id and not editTransactionRow.pay_id.ToString();You code...
View ArticleHow to check for a Null value in VB.NET
I have this:If String.IsNullOrEmpty(editTransactionRow.pay_id.ToString()) = False Then stTransactionPaymentID = editTransactionRow.pay_id 'Check for null valueEnd IfNow, when editTransactionRow.pay_id...
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