Cannot conver type nvarchar to long in VB.NET

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My project is developed in vb.net.I've used Msh FlexGrid and i want to check If Grid Cell Has any value in grid.

What I have tried:

My code is

<pre>  
With GridMed
          For intRow = 1 To .Rows - 1
                    If Not .TextMatrix(intRow, .GetColIndex("HpName")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("DoctorName")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("RegNo")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("ID1")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("Id2")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("Fitness")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("CertifiedDate")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("Status")) Then
                        Exit For
                    End If
End with
                   
It shows Following error 

Conversion from string "hjkhj" to type 'Long' is not valid.

Posted 1-Oct-18 0:41am

Flower@12

Updated 1-Oct-18 0:50am

v3

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OriginalGriff · Accepted Answer · 2018-10-01T00:51:00

Solution 1

Look at the error message:

Conversion from string "hjkhj" to type 'Long' is not valid.

It's pretty clear, and absolutely right.
What kind of number do you expect to get from the string "hjkhj"? The system is telling you "this isn't a number, I can't do anything with it".

You need to check your data source, and find out why what you expect to be a numeric value is a string that looks like lazy typing...

We can't do that for you.

Posted 1-Oct-18 0:51am

OriginalGriff

Comments

[no name] 1-Oct-18 7:32am

Thank you sir.I want to check if grid has any value in grid cell..I tried following code but it Does not working.How to check each cell contains value or not

  
With GridMed
          For intRow = 1 To .Rows - 1
                    If Not .TextMatrix(intRow, .GetColIndex("HpName")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("DoctorName")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("RegNo")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("ID1")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("Id2")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("Fitness")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("CertifiedDate")) <> "" Or Not .TextMatrix(intRow, .GetColIndex("Status")) Then
                        Exit For
                    End If
End with

OriginalGriff 1-Oct-18 7:55am

Use the debugger!

[no name] 1-Oct-18 7:57am

I already check it.But it does not working.sir i want check if any one field has value If Condition is Comes to end but it not comes

OriginalGriff 1-Oct-18 8:09am

And how - exactly - did you check it with the debugger?
What - exactly - did it show you?

[no name] 1-Oct-18 8:19am

My grid has five fields and 3 fields have Value now i want to End the If statement but it Control Goes to Exit For statement what is the Mistake i done

OriginalGriff 1-Oct-18 8:39am

Use the debugger and find out!
Look at each variable that the If condition uses and find out exactly what each comparison is doing.

I can't do that for you - I can't run your code...

[no name] 1-Oct-18 7:58am

The field has value but the control executes Exit For Statement..How it is possible?